DE3814783A1 - Expandable polymer alloy in particle form, and process for the preparation thereof - Google Patents
Expandable polymer alloy in particle form, and process for the preparation thereofInfo
- Publication number
- DE3814783A1 DE3814783A1 DE19883814783 DE3814783A DE3814783A1 DE 3814783 A1 DE3814783 A1 DE 3814783A1 DE 19883814783 DE19883814783 DE 19883814783 DE 3814783 A DE3814783 A DE 3814783A DE 3814783 A1 DE3814783 A1 DE 3814783A1
- Authority
- DE
- Germany
- Prior art keywords
- weight
- polymer alloy
- expandable polymer
- vinyl acetate
- styrene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229920000642 polymer Polymers 0.000 title claims abstract description 26
- 239000000956 alloy Substances 0.000 title claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 25
- 239000002245 particle Substances 0.000 title claims description 16
- 238000000034 method Methods 0.000 title description 4
- 239000004604 Blowing Agent Substances 0.000 claims abstract description 16
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 12
- 239000004793 Polystyrene Substances 0.000 claims abstract description 11
- 229920002223 polystyrene Polymers 0.000 claims abstract description 11
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000011256 inorganic filler Substances 0.000 claims abstract description 6
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 6
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 4
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 20
- -1 alkali metal salts Chemical class 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 11
- 229920000573 polyethylene Polymers 0.000 claims description 10
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- 239000010456 wollastonite Substances 0.000 claims description 7
- 229910052882 wollastonite Inorganic materials 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 150000002978 peroxides Chemical class 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 4
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000007900 aqueous suspension Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 150000008282 halocarbons Chemical class 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 239000001993 wax Substances 0.000 claims 1
- 239000000047 product Substances 0.000 description 10
- 239000006260 foam Substances 0.000 description 9
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 7
- 239000008187 granular material Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 6
- 230000035939 shock Effects 0.000 description 5
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 description 4
- BQACOLQNOUYJCE-FYZZASKESA-N Abietic acid Natural products CC(C)C1=CC2=CC[C@]3(C)[C@](C)(CCC[C@@]3(C)C(=O)O)[C@H]2CC1 BQACOLQNOUYJCE-FYZZASKESA-N 0.000 description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229920001577 copolymer Polymers 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000011049 pearl Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004803 Di-2ethylhexylphthalate Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- UPIWXMRIPODGLE-UHFFFAOYSA-N butyl benzenecarboperoxoate Chemical compound CCCCOOC(=O)C1=CC=CC=C1 UPIWXMRIPODGLE-UHFFFAOYSA-N 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- NEHMKBQYUWJMIP-NJFSPNSNSA-N chloro(114C)methane Chemical compound [14CH3]Cl NEHMKBQYUWJMIP-NJFSPNSNSA-N 0.000 description 1
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229960003750 ethyl chloride Drugs 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001282 iso-butane Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229940073584 methylene chloride Drugs 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0085—Use of fibrous compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing atoms other than carbon or hydrogen
- C08L23/0853—Ethene vinyl acetate copolymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Description
Die Erfindung betrifft eine expandierbare Polymerlegierung in Partikelform, die ein Ethylen-Vinylacetat-Copolymeres, Polystyrol, einen kurzfaserigen anorganischen Füllstoff und ein niedrigsiedendes Treibmittel enthält.The invention relates to an expandable polymer alloy in Particulate form, which is an ethylene-vinyl acetate copolymer, polystyrene, a short-fiber inorganic filler and a low-boiling blowing agent contains.
Expandierbare Polymerlegierungen, die Olefin(co)polymere, Polystyrol und Treibmittel enthalten, lassen sich durch Erhitzen zu Schaumstoffen expandieren und weiterverarbeiten, die sich auf Grund ihrer Kompressibilität, Festigkeit, Steifigkeit und Stoßabsorptionseigenschaften u.a vorteilhaft als Verpackungsmaterial und für Stoßdämpfer in Kraftfahrzeugen eignen. Zu ihrer Herstellung geht man nach dem Stand der Technik (vgl. EP-A-1 10 151) von einem vernetzten Olefin(co)polymeren aus, das mit Styrol und Treibmittel durchtränkt und anschließend polymerisiert wird. Die erforderliche Vernetzung des Olefin(co)polymeren bedeutet einen zusätzlichen Verfahrensschritt. Vernetzte Olefin(co)polymere lassen sich ferner mit Styrol nur ungenügend quellen und tränken. Dies führt bei der Polymerisation zu einer inhomogenen Verteilung der aliphatischen und aromatischen Polymerphasen. Vielfach scheidet sich bei der Polymerisation ein Teil des Polystyrols unvermischt mit dem Olefincopolymeren ab, es entsteht ein Granulat mit uneinheitlicher Größe und Zusammensetzung. Die daraus hergestellten Formteile schrumpfen beträchtlich, zeigen eine rauhe Oberfläche und unbefriedigende Verpackungseigenschaften.Expandable polymer alloys, the olefin (co) polymers, polystyrene and Containing blowing agents can be foamed by heating expand and process based on their Compressibility, strength, rigidity and shock absorption properties among other things advantageous as packaging material and for shock absorbers in Suitable for motor vehicles. They are manufactured according to the state of the art Technology (cf. EP-A-1 10 151) from a crosslinked olefin (co) polymer, which is saturated with styrene and blowing agent and then polymerized becomes. The required crosslinking of the olefin (co) polymer means one additional process step. Crosslinked olefin (co) polymers can be furthermore, swell and soak only insufficiently with styrene. This leads to the Polymerization to an inhomogeneous distribution of the aliphatic and aromatic polymer phases. There are often differences in the polymerization part of the polystyrene unmixed with the olefin copolymer, it the result is granules of inconsistent size and composition. The Moldings made from it shrink considerably, show a rough Surface and unsatisfactory packaging properties.
Versuche, unvernetzte Olefin(co)polymere als Ausgangsstoff zu verwenden führten zu starker Belagbildung im Reaktor und zu einer Koagulation und Agglomeration der Partikel.Attempts to use uncrosslinked olefin (co) polymers as the starting material led to heavy deposit formation in the reactor and to coagulation and Agglomeration of the particles.
Aufgabe der Erfindung war es, diese Nachteile der bekannten Polymerlegierungen zu vermeiden und eine expandierbare Polymerlegierung auf Basis eines unvernetzten Olefin(co)polymeren herzustellen.The object of the invention was to overcome these disadvantages of the known Avoid polymer alloys and an expandable polymer alloy based on an uncrosslinked olefin (co) polymer.
Überraschenderweise wurde nun gefunden, daß expandierbare Polymerlegierungen auf Basis eines Ethylen-Vinylacetat-Copolymeren, Polystyrol und Treibmittel, die geringe Mengen eines kurzfaserigen anorganischen Füllstoffs enthalten, bei ihrer Herstellung weder zur Belagbildung im Reaktor noch zu einer Koagulation und Agglomeration führen. Diese expandierbaren Legierungen zeichnen sich ferner aus durch eine homogene Verteilung der beiden Polymerphasen. Sie lassen sich zu Schaumstoffen expandieren und weiterverarbeiten, die besonders feinzellig sind und eine für ihre Anwendung als Verpackungs- und Stoßdämpfungs material optimale Kombination von Kompressibilität-, Festigkeit- und Steifigkeitseigenschaften aufweisen.Surprisingly, it has now been found that expandable Polymer alloys based on an ethylene-vinyl acetate copolymer, Polystyrene and blowing agent, the small amounts of a short-fiber contain inorganic filler, neither in their manufacture Coating and agglomeration of deposits in the reactor to lead. These expandable alloys are also characterized by a homogeneous distribution of the two polymer phases. You allow yourself Expand and process foams that are particularly fine-celled are and one for their application as packaging and shock absorption optimal combination of compressibility, strength and Have stiffness properties.
Gegenstand der Erfindung ist somit eine expandierbare Polymerlegierung in Partikelfasern, enthaltendThe invention thus relates to an expandable polymer alloy in Containing particle fibers
- a) 30 bis 60 Gew.% eines Ethylen-Vinylacetat-Copolymeren mit einem Vinylacetat-Gehalt von 3 bis 6 Gew.%,a) 30 to 60 wt.% Of an ethylene-vinyl acetate copolymer with a Vinyl acetate content of 3 to 6% by weight,
- b) 30 bis 60 Gew.% Polystyrol,b) 30 to 60% by weight of polystyrene,
- c) 0,1 bis 2 Gew.% eines feinteiligen, kurzfaserigen anorganischen Füllstoffs,c) 0.1 to 2% by weight of a finely divided, short-fiber inorganic Filler,
- d) 5 bis 20 Gew.% eines Kohlenwasserstoffs mit 4 bis 5 C-Atomen oder eines Halogenkohlenwasserstoffs mit 1 bis 2 C-Atomen, sowie gegebenenfallsd) 5 to 20% by weight of a hydrocarbon with 4 to 5 carbon atoms or a halogenated hydrocarbon with 1 to 2 carbon atoms, and possibly
- e) 0,05 bis 2 Gew.% eines organischen Zellreglers und gegebenenfallse) 0.05 to 2% by weight of an organic cell regulator and optionally
- f) weitere übliche Zusatzstoffe in wirksamen Mengen.f) other conventional additives in effective amounts.
Gegenstand der Erfindung ist ferner ein Verfahren zur Herstellung dieser expandierbaren Polymerlegierung, das dadurch gekennzeichnet ist, daß man ein Gemisch aus den Komponenten (a) und (c) in Partikelform in wäßriger Suspension in Gegenwart von Styrol, einem styrollöslichen Peroxid als Katalysator und dem Treibmittel (d) bei Temperaturen zwischen 80 und 150°C polymerisiert.The invention further relates to a method for producing this Expandable polymer alloy, which is characterized in that a mixture of components (a) and (c) in particle form in aqueous Suspension in the presence of styrene, a styrene soluble peroxide as Catalyst and the blowing agent (d) at temperatures between 80 and 150 ° C. polymerized.
Die expandierbare Polymerlegierung enthält in einer Menge von 30 bis 60 Gew.%, vorzugsweise 35 bis 55 Gew.%, insbesondere 40 bis 50 Gew.% ein Ethylen-Vinylacetat-Copolymeres mit einem Vinylacetatgehalt von 3 bis 6 Gew.%, vorzugsweise 4 bis 5 Gew.%. Das Copolymere kann vernetzt oder unvernetzt sein. Vorzugsweise wird bei der Herstellung von einem unvernetzten Produkt ausgegangen, d.h. einem Produkt, das weniger als 10%, vorzugsweise weniger als 5%, insbesondere weniger als 1% vernetzte Anteile enthält. Durch die Polymerisation des aufgesaugten Styrols können sich in geringer Menge Vernetzungen des Copolymeren bilden. Auch ist dabei in geringem Umfang eine Aufpfropfung von Styroleinheiten auf das Copolymere möglich. Das verwendete Copolymere besitzt im allgemeinen einen Schmelzindex zwischen 0.8 und 3.5 (g/10 min), gemessen nach DIN 53 735 (190/2.16).The expandable polymer alloy contains from 30 to 60% by weight, preferably 35 to 55% by weight, in particular 40 to 50% by weight Ethylene-vinyl acetate copolymer with a vinyl acetate content of 3 to 6% by weight, preferably 4 to 5% by weight. The copolymer can be cross-linked or not be networked. Preferably in the manufacture of one non-networked product, i.e. a product that is less than 10%, preferably less than 5%, especially less than 1% crosslinked Contains shares. The polymerization of the absorbed styrene can crosslinks of the copolymer form in a small amount. Also included to a small extent a grafting of styrene units onto the Copolymers possible. The copolymer used generally has one Melt index between 0.8 and 3.5 (g / 10 min), measured according to DIN 53 735 (190 / 2.16).
Die expandierbare Polymerlegierung enthält weiterhin in einer Menge von 30 bis 60 Gew.%, vorzugsweise 35 bis 55 Gew.%, insbesondere 40 bis 50 Gew.% Polystyrol. Der Schmelzindex des Polystyrols liegt im allgemeinen zwischen 18 und 22 (g/10 min), gemessen nach DIN 53735 (230/2.16). The expandable polymer alloy also contains 30 up to 60% by weight, preferably 35 to 55% by weight, in particular 40 to 50% by weight Polystyrene. The melt index of the polystyrene is generally between 18 and 22 (g / 10 min), measured according to DIN 53735 (230 / 2.16).
Erfindungsgemäß enthält die expandierbare Polymerlegierung 0,1 bis 2 Gew.%, vorzugsweise 0,15 bis 1,5 Gew.%, insbesondere 0,2 bis 1 Gew.% eines feinteiligen, kurzfaserigen anorganischen Füllstoffs, beispielsweise Glasfasern, Asbest oder vorzugsweise Wollastonit. Der Füllstoff hat im allgemeinen einen mittleren Durchmesser zwischen 1 und 20 µm vorzugsweise zwischen 2 und 10 µm, eine mittlere Länge zwischen 20 und 300 µm, vorzugsweise zwischen 40 und 200 µm und ein Verhältnis Durchmesser: Länge zwischen 1 : 10 und 1 : 30, vorzugsweise zwischen 1 : 15 und 1 : 25. Vorzugsweise wird handelsüblicher Wollastonit mit einer durch Sedimetionsanalyse ermittelten maximalen Korngröße von 16 µm verwendet. Als Treibmittel verwendet man aliphatische Kohlenwasserstoffe mit 4 bis 5 C-Atomen, wie Butan, iso-Butan, Pentan und vorzugsweise iso-Pentan oder Halogenkohlenwasserstoffe mit 1 bis 2 C-Atomen, wie Methylchlorid, Methylenchlorid, Ethylchlorid. Auch Treibmittelgemische sind verwendbar. Bevorzugt weist das Treibmittel einen Siedepunkt zwischen -12 und +40°C auf. Die expandierbare Polymerlegierung enthält das Treibmittel in einer Menge von 5 bis 20 Gew.%, vorzugsweise 5 bis 15 Gew.%.According to the invention, the expandable polymer alloy contains 0.1 to 2% by weight, preferably 0.15 to 1.5% by weight, in particular 0.2 to 1% by weight a finely divided, short-fiber inorganic filler, for example Glass fibers, asbestos or preferably wollastonite. The filler has generally an average diameter between 1 and 20 microns preferably between 2 and 10 µm, an average length between 20 and 300 µm, preferably between 40 and 200 microns and a ratio of diameter: length between 1:10 and 1:30, preferably between 1:15 and 1:25. Preferably becomes commercially available wollastonite with a sediment analysis determined maximum grain size of 16 microns used. As a blowing agent uses aliphatic hydrocarbons with 4 to 5 carbon atoms, such as Butane, isobutane, pentane and preferably isopentane or Halogenated hydrocarbons with 1 to 2 carbon atoms, such as methyl chloride, Methylene chloride, ethyl chloride. Blowing agent mixtures can also be used. The blowing agent preferably has a boiling point between -12 and + 40 ° C. on. The expandable polymer alloy contains the blowing agent in one Amount of 5 to 20% by weight, preferably 5 to 15% by weight.
Zur Regelung der Zellgröße beim Vorschäumen ist es vorteilhaft, einen üblichen Zellregler mitzuverwenden. Dieser wird im allgemeinen in einer Menge von 0,05 bis 2 Gew.%, vorzugsweise 0,1 bis 1 Gew.%, bezogen auf die expandierbare Polymerlegierung verwendet. Als Zellregler benutzt man vorzugsweise Harzsäuren, deren Alkalimetallsalze und/oder ein Polyethylenwachs. Als Harzsäuren seien genannt Abietinsäure bzw. das durch katalytische Disproportionierung von Abietinsäure erhältliche Säuregemisch. Als Alkalisalze der Harzsäuren werden die Natrium- und insbesondere die Kaliumsalze verwendet. Das Polyethylenwachs besitzt im allgemeinen ein Molgewicht zwischen 500 und 5000, vorzugsweise zwischen 500 und 2000.To regulate the cell size during pre-foaming, it is advantageous to use one common cell controller to use. This is generally in one Amount of 0.05 to 2% by weight, preferably 0.1 to 1% by weight, based on the expandable polymer alloy used. One uses as a cell regulator preferably resin acids, their alkali metal salts and / or a Polyethylene wax. Abietic acid or that which may be mentioned as resin acids Catalytic disproportionation of abietic acid available Acid mixture. The alkali salts of the resin acids are the sodium and especially the potassium salts used. The polyethylene wax has in generally a molecular weight between 500 and 5000, preferably between 500 and 2000.
Mit besonderem Vorteil verwendet man als Keimbildner ein Gemisch aus dem Kaliumsalz der disproportionierten Abietinsäure und Polyethylenwachs.It is particularly advantageous to use a mixture of the nucleating agents Potassium salt of disproportionated abietic acid and polyethylene wax.
Die expandierbare Polymerlegierung kann ferner weitere übliche Zusatzstoffe in wirksamen Mengen enthalten, wie Farbstoffe, Pigmente, Antistatika, Flammschutzmittel und/oder Gleitmittel.The expandable polymer alloy can also be other conventional ones Contain additives in effective amounts, such as dyes, pigments, Antistatic agents, flame retardants and / or lubricants.
Die expandierbare Polymerlegierung liegt in Partikelform vor, d.h. als Granulat in Zylinderform oder vorzugsweise in Perl- oder Tropfenform. Die mittlere Partikelgröße liegt im allgemeinen zwischen 0,5 und 3 mm, vorzugsweise zwischen 1,5 und 2,5 mm. The expandable polymer alloy is in particle form, i.e. as Granules in cylindrical form or preferably in pearl or drop form. The average particle size is generally between 0.5 and 3 mm, preferably between 1.5 and 2.5 mm.
Zur Herstellung der expandierbaren Polymerlegierung geht man von Partikeln des Ethylen-Vinylacetat-Copolymeren aus, welches den feinteiligen Füllstoff in gleichmäßiger Verteilung und gegebenenfalls auch den Keimbildner und die Zusatzstoffe enthält. Die Partikel werden in wäßriger Suspension, zweckmäßig in Gegenwart eines üblichen anorganischen und organischen Suspensionsstabilisators in einem druckfesten Mischgefäß mit Styrol und Treibmittel und gegebenenfalls den weiteren Zusatzstoffen versetzt. Man fügt ein styrollösliches Peroxid als Katalysator zu und erwärmt das Gemisch auf Temperaturen zwischen 80 und 150°C, Styrol, Treibmittel und Zusatzstoffe diffundieren dabei in das Granulat ein und das Styrol wird zu Polystyrol polymerisiert. Vorteilhaft erfolgt die Treibmittelzugabe erst, nachdem die Polymerisation beendet ist. Nach beendeter Reaktion wird das Gemisch abgekühlt, die expandierbaren Partikel werden abgetrennt, und gegebenenfalls gewaschen und getrocknet.Particles are used to produce the expandable polymer alloy of the ethylene-vinyl acetate copolymer, which is the finely divided Filler in an even distribution and possibly also the Nucleating agent and the additives contains. The particles become more aqueous Suspension, conveniently in the presence of a conventional inorganic and organic suspension stabilizer in a pressure-resistant mixing vessel with Styrene and blowing agent and optionally the other additives transferred. A styrene-soluble peroxide is added as a catalyst and heats the mixture to temperatures between 80 and 150 ° C, styrene, Blowing agents and additives diffuse into the granules the styrene is polymerized to polystyrene. This is advantageous The addition of blowing agent only after the polymerization has ended. To When the reaction is complete, the mixture is cooled, the expandable particles are separated off and, if necessary, washed and dried.
Die erhaltene expandierbare Polymerlegierung kann unmittelbar nach der Herstellung durch Behandeln mit einem heißen Gas, wie Luft, Stickstoff oder Wasserdampf von 80 bis 125°C zu Schaumstoffpartikel aufgeschäumt werden. Man verwendet dazu übliche Verschäumungsgeräte. Die Schaumstoffpartikel besitzen im allgemeinen eine Schüttdichte zwischen 30 und 40 g/cm3. Sie können durch erneutes Behandeln, gegebenenfalls bis zu 3 mal, weiter expandiert werden bis zu einer Schüttdichte von 15 bis 29 g/cm3.The expandable polymer alloy obtained can be foamed into foam particles immediately after production by treatment with a hot gas such as air, nitrogen or steam at from 80 to 125 ° C. Conventional foaming devices are used for this. The foam particles generally have a bulk density between 30 and 40 g / cm 3 . They can be expanded further by treatment, if necessary up to 3 times, to a bulk density of 15 to 29 g / cm 3 .
Für die Herstellung von Formkörpern füllt man die Schaumstoffpartikel in eine nicht gasdicht schließende Form und erhitzt sie darin, beispielsweise durch Einleiten von Wasserdampf. Die Partikel dehnen sich dabei aus und verschweißen miteinander. Nach dem Abkühlen wird das Formteil aus der Form entnommen.For the production of molded articles, the foam particles are filled in a non-gastight form and heats it up, for example by introducing water vapor. The particles expand and weld together. After cooling, the molded part is removed from the mold taken.
Die erhaltenen Formkörper finden beispielsweise Verwendung als Verpackungsmaterial für stoßempfindliche Güter sowie für Stoßdämpfer in Kraftfahrzeugen.The moldings obtained are used, for example, as Packaging material for shock sensitive goods as well as for shock absorbers in Motor vehicles.
In einem 47,5-l-Druckkessel werden unter Rühren 28,477 kg VE-Wasser, 0,426 kg Tricalciumphosphat, 0,0038 kg Kaliumdihydrogenphosphat, 0,0131 kg Di-Natriumhydrogenphosphat-12-Hydrat sowie 0,003 kg Natriumsalz der C14, 15-Alkylsulfonsäure und schließlich 6,17 kg Polyethylen-Vinyl acetat-Copolymergranulat (2,25×1,0 mm; VA-Gehalt 4%; MFI (190/2,16) = 1 g/10 min; Dichte 0,925 g/ml), welches 0,5 Gew.% Wollastonit (max. Korngröße 16 µm, Schüttdichte 0,28 g/cm3; Spez. Oberfläche BET 3 m2/g; Fa. Quarzwerke GmbH D-502 Frechen) enthält, eingefüllt. Zu dieser Suspension werden 6,17 kg Styrol, 0,0247 kg Dresinate 214 (Kaliumsalz von disproportionierter Abietinsäure, Fa. Abieta Chemie, D-8906 Gersthofen), 0,0617 kg Polyethylenwachs (M n = 750; Dichte 0,92 g/ml; Tropfpkt. 105-110°C), 0,0617 kg Di-2-ethylhexylphthalat sowie 0,0679 kg Dicumylperoxid, 0,0123 kg tert. Butylperbenzoat und 0,0308 kg Dibenzoylperoxid gegeben. Der Kessel wird mit Stickstoff gespült und auf 75°C aufgeheizt. Nach 5 h auf 125°C gesteigert und dort 5 h belassen. Zur Imprägnierung mit dem Treibmittel wird die Temperatur auf 75°C zurückgenommen und im Verlauf von ca. 3 h werden 1,543 kg iso-Pentan zudosiert. Der Kessel wird auf Raumtemperatur gebracht und es werden 0,7 kg Salpetersäure (65%ig) zugegeben. Anschließend wird der Kesselinhalt in einen Waschtank entleert und die Rohperlen werden gewaschen. Die abgesiebten Perlen werden rasch mit 50°C warmer Luft getrocknet.In a 47.5-liter autoclave with stirring 28.477 kg of demineralized water, 0.426 kg of tricalcium phosphate, 0.0038 kg potassium dihydrogen phosphate, 0.0131 kg of disodium hydrogen phosphate 12-hydrate and 0.003 kg of sodium salt of C 14, 15 -alkylsulfonic and finally 6.17 kg of polyethylene-vinyl acetate copolymer granules (2.25 × 1.0 mm; VA content 4%; MFI (190 / 2.16) = 1 g / 10 min; density 0.925 g / ml), which contains 0.5% by weight wollastonite (max. grain size 16 µm, bulk density 0.28 g / cm 3 ; specific surface BET 3 m 2 / g; from Quarzwerke GmbH D-502 Frechen). 6.17 kg of styrene, 0.0247 kg of Dresinate 214 (potassium salt of disproportionated abietic acid, Abieta Chemie, D-8906 Gersthofen), 0.0617 kg of polyethylene wax (M n = 750; density 0.92 g / ml; dropping point 105-110 ° C), 0.0617 kg di-2-ethylhexyl phthalate and 0.0679 kg dicumyl peroxide, 0.0123 kg tert. Butyl perbenzoate and 0.0308 kg of dibenzoyl peroxide. The kettle is flushed with nitrogen and heated to 75 ° C. After 5 h increased to 125 ° C and left there for 5 h. To impregnate with the blowing agent, the temperature is reduced to 75 ° C. and 1.543 kg of isopentane are metered in over the course of about 3 hours. The kettle is brought to room temperature and 0.7 kg of nitric acid (65%) are added. The contents of the kettle are then emptied into a wash tank and the raw beads are washed. The sieved beads are quickly dried with 50 ° C warm air.
Die erhaltene expandierbare Polymerlegierung hat einen mittleren Partikeldurchmesser von 1,9 mm. Sie enthält 43,4 Gew.% Ethylen-Vinylacetat-Copolymeres, 43,6 Gew.% Polystyrol, 0,22 Gew.% Wollastonit und 6,8 Gew.% iso-Pentan.The expandable polymer alloy obtained has a medium one Particle diameter of 1.9 mm. It contains 43.4% by weight Ethylene-vinyl acetate copolymer, 43.6% by weight polystyrene, 0.22% by weight Wollastonite and 6.8% by weight isopentane.
Die getrockneten Perlen werden anschließend in einem kontinuierlichen Vorschäumer (Händle RC 69) bei einem Durchsatz von ca. 3 kg/min vorgeschäumt. Zugehörige Produkt- und Verarbeitungsdaten sind den Tabellen 1 bis 3 zu entnehmen.The dried pearls are then in a continuous Pre-foamer (Händle RC 69) with a throughput of approx. 3 kg / min pre-foamed. Associated product and processing data are the Tables 1 to 3.
Wie unter Beispiel 1 beschrieben werden unter Vorwendung von Polyethylen-Vinylacetat-Copolymer-Granulat (2,25×1 mm; MFI (190/21,6) = 38 g/10 min; Dichte 0,926 g/ml) eines Vinylacetatgehaltes von 5% modifizierte Polyethylenschaumperlen mit Durchmesser 0,5 cm hergestellt. Produkt und Verarbeitungsdaten sind den Tabellen 1 bis 3 zu entnehmen.As described in Example 1, using Polyethylene vinyl acetate copolymer granules (2.25 × 1 mm; MFI (190 / 21.6) = 38 g / 10 min; Density 0.926 g / ml) of a vinyl acetate content of 5% modified polyethylene foam beads with a diameter of 0.5 cm. Product and processing data can be found in Tables 1 to 3.
Wie unter Beispiel 1 beschrieben werden unter Verwendung von Polyethylen-Vinylacetat-Copolymer-Granulat (2,25×1 mm; MFI (190/2,16) = 4,1 g/10 min; Dichte = 0,926 g/ml) eines Vinylacetatgehaltes von 8% modifizierte Polyethylenschaumperlen mit Durchmesser 0,5 cm hergestellt. Produkt und Verarbeitungsdaten sind den Tabellen 1 bis 3 zu entnehmen. As described in Example 1 using Polyethylene vinyl acetate copolymer granules (2.25 × 1 mm; MFI (190 / 2.16) = 4.1 g / 10 min; Density = 0.926 g / ml) of a vinyl acetate content of 8% modified polyethylene foam beads with a diameter of 0.5 cm. Product and processing data can be found in Tables 1 to 3.
Wie unter Beispiel 1 beschrieben, jedoch ohne Zusatz von PE-Wachs und mit gegenüber Bsp. 1 auf 0,125% verringerter Menge an Wollastonit werden modifizierte Polyethylenschaumperlen mit Durchmesser ca. 0,5 cm hergestellt. Produkt und Verarbeitungsdaten sind den Tabellen 1 bis 3 zu entnehmen.As described in Example 1, but without the addition of PE wax and with compared to Example 1, the amount of wollastonite reduced to 0.125% modified polyethylene foam beads with a diameter of approx. 0.5 cm produced. Product and processing data can be found in Tables 1 to 3 remove.
Die in Beispiel 1 angegebenen Komponenten werden derart vorgelegt, daß zuerst die organische Phase ohne Peroxide eingefüllt wird. Dieser wird das Polyethylen-Vinylacetat-Copolymer-Granulat und sodann die wäßrige Phase zugegeben. Nach Dosierung der Peroxide wird die Reaktion gemäß Beispiel 1 in Gang gebracht. Produkt und Verarbeitungsdaten sind den Tabellen 1 bis 3 zu entnehmen.The components specified in Example 1 are presented in such a way that first the organic phase is filled in without peroxides. This one will Polyethylene vinyl acetate copolymer granules and then the aqueous phase admitted. After the peroxides have been metered in, the reaction is carried out according to Example 1 started. Product and processing data are in Tables 1 to 3 refer to.
Wie unter Beispiel 1 beschrieben, jedoch ohne die keimbildenden Zusätze Wollastonit, Dresinat 214 und Polyethylenwachs werden modifizierte Polyethylenschaumperlen mit einem Durchmesser von ca. 0,25 bis 0,4 cm hergestellt. Als Treibmittel wird n-Butan verwendet. Im Kessel wird Belagbildung und Agglomeration der Partikeln beobachtet. Die Schaumstruktur ist unzulänglich. Die Produkt- und Verarbeitungsdaten sind in den Tabellen 1 bis 3 zu entnehmen. As described in Example 1, but without the nucleating additives Wollastonite, Dresinat 214 and polyethylene wax are modified Polyethylene foam beads with a diameter of approx. 0.25 to 0.4 cm produced. N-Butane is used as the blowing agent. In the cauldron The formation of deposits and agglomeration of the particles were observed. The Foam structure is inadequate. The product and processing data are can be seen in Tables 1 to 3.
Claims (5)
- a) 30 bis 60 Gew.% eines Ethylen-Vinylacetat-Copolymeren mit einem Vinylacetat-Gehalt von 3 bis 6 Gew.%,
- b) 30 bis 60 Gew.% Polystyrol,
- c) 0,1 bis 2 Gew.% eines feinteiligen, kurzfaserigen anorganischen Füllstoffs,
- d) 5 bis 20 Gew.% eines Kohlenwasserstoffs mit 4 bis 5 C-Atomen oder eines Halogenkohlenwasserstoffs mit 1 bis 2 C-Atomen, sowie gegebenenfalls
- e) 0,05 bis 2 Gew.% eines organischen Zellreglers und gegebenenfalls
- f) weitere übliche Zusatzstoffe in wirksamen Mengen.
- a) 30 to 60% by weight of an ethylene-vinyl acetate copolymer with a vinyl acetate content of 3 to 6% by weight,
- b) 30 to 60% by weight of polystyrene,
- c) 0.1 to 2% by weight of a finely divided, short-fiber inorganic filler,
- d) 5 to 20% by weight of a hydrocarbon with 4 to 5 C atoms or a halogenated hydrocarbon with 1 to 2 C atoms, and if appropriate
- e) 0.05 to 2% by weight of an organic cell regulator and optionally
- f) other conventional additives in effective amounts.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883814783 DE3814783A1 (en) | 1988-04-30 | 1988-04-30 | Expandable polymer alloy in particle form, and process for the preparation thereof |
| JP10036889A JPH01318055A (en) | 1988-04-30 | 1989-04-21 | Granular expansible polymer alloy and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883814783 DE3814783A1 (en) | 1988-04-30 | 1988-04-30 | Expandable polymer alloy in particle form, and process for the preparation thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3814783A1 true DE3814783A1 (en) | 1989-11-09 |
Family
ID=6353347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19883814783 Withdrawn DE3814783A1 (en) | 1988-04-30 | 1988-04-30 | Expandable polymer alloy in particle form, and process for the preparation thereof |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH01318055A (en) |
| DE (1) | DE3814783A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5525636A (en) * | 1994-05-13 | 1996-06-11 | Basf Aktiengesellschaft | Expandable styrene polymers |
| EP1002829A1 (en) * | 1998-11-16 | 2000-05-24 | Basf Aktiengesellschaft | Filled expandable styrenic particles |
| WO2005056653A1 (en) * | 2003-12-12 | 2005-06-23 | Basf Aktiengesellschaft | Particle foam moulded parts made of expandable polymer granulates containing filling material |
| WO2008091308A3 (en) * | 2007-01-19 | 2009-02-19 | Dow Global Technologies Inc | Polymeric foam containing long carbon nano-tubes |
| US8568633B2 (en) | 2007-04-11 | 2013-10-29 | Basf Se | Elastic particle foam based on polyolefin/styrene polymer mixtures |
| US8729143B2 (en) | 2008-12-30 | 2014-05-20 | Basf Se | Elastic particle foam based on polyolefin/styrene polymer mixtures |
| US8741973B2 (en) | 2009-03-05 | 2014-06-03 | Basf Se | Elastic expanded polymer foam based on polyolefin/styrene polymer mixtures |
| WO2014097074A1 (en) | 2012-12-17 | 2014-06-26 | Versalis S.P.A. | Expandable polymeric composition with improved flexibility and relative preparation process |
| DE102013224275A1 (en) | 2013-11-27 | 2015-05-28 | Basf Se | Process for the preparation of expandable, thermoplastic polymer particles with improved blowing agent retention capacity |
| US10920033B2 (en) | 2016-07-29 | 2021-02-16 | Versalis S.P.A. | Expandable vinyl aromatic composition containing functionalized ethylene-vinyl acetate copolymer |
-
1988
- 1988-04-30 DE DE19883814783 patent/DE3814783A1/en not_active Withdrawn
-
1989
- 1989-04-21 JP JP10036889A patent/JPH01318055A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5525636A (en) * | 1994-05-13 | 1996-06-11 | Basf Aktiengesellschaft | Expandable styrene polymers |
| EP1002829A1 (en) * | 1998-11-16 | 2000-05-24 | Basf Aktiengesellschaft | Filled expandable styrenic particles |
| WO2005056653A1 (en) * | 2003-12-12 | 2005-06-23 | Basf Aktiengesellschaft | Particle foam moulded parts made of expandable polymer granulates containing filling material |
| CN100412118C (en) * | 2003-12-12 | 2008-08-20 | 巴斯福股份公司 | Bead foam moulded parts made of expandable polymer particles containing filler |
| RU2371455C2 (en) * | 2003-12-12 | 2009-10-27 | Басф Акциенгезельшафт | Foamed plastic moulded objects, made from filler-containing polymer granulates, capable of foaming |
| WO2008091308A3 (en) * | 2007-01-19 | 2009-02-19 | Dow Global Technologies Inc | Polymeric foam containing long carbon nano-tubes |
| US8568633B2 (en) | 2007-04-11 | 2013-10-29 | Basf Se | Elastic particle foam based on polyolefin/styrene polymer mixtures |
| US8729143B2 (en) | 2008-12-30 | 2014-05-20 | Basf Se | Elastic particle foam based on polyolefin/styrene polymer mixtures |
| US8741973B2 (en) | 2009-03-05 | 2014-06-03 | Basf Se | Elastic expanded polymer foam based on polyolefin/styrene polymer mixtures |
| WO2014097074A1 (en) | 2012-12-17 | 2014-06-26 | Versalis S.P.A. | Expandable polymeric composition with improved flexibility and relative preparation process |
| US9963582B2 (en) | 2012-12-17 | 2018-05-08 | Versalis S.P.A. | Expandable polymeric composition with improved flexibility and relative preparation process |
| DE102013224275A1 (en) | 2013-11-27 | 2015-05-28 | Basf Se | Process for the preparation of expandable, thermoplastic polymer particles with improved blowing agent retention capacity |
| US10920033B2 (en) | 2016-07-29 | 2021-02-16 | Versalis S.P.A. | Expandable vinyl aromatic composition containing functionalized ethylene-vinyl acetate copolymer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01318055A (en) | 1989-12-22 |
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