[go: up one dir, main page]

WO2007011045A1 - Agent de purge - Google Patents

Agent de purge Download PDF

Info

Publication number
WO2007011045A1
WO2007011045A1 PCT/JP2006/314539 JP2006314539W WO2007011045A1 WO 2007011045 A1 WO2007011045 A1 WO 2007011045A1 JP 2006314539 W JP2006314539 W JP 2006314539W WO 2007011045 A1 WO2007011045 A1 WO 2007011045A1
Authority
WO
WIPO (PCT)
Prior art keywords
purging agent
purging
resin
evoh
molding
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.)
Ceased
Application number
PCT/JP2006/314539
Other languages
English (en)
Japanese (ja)
Inventor
Naoki Kataoka
Hiroyuki Shindome
Tomoyuki Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2007526074A priority Critical patent/JPWO2007011045A1/ja
Publication of WO2007011045A1 publication Critical patent/WO2007011045A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/70—Maintenance
    • B29C33/72—Cleaning
    • B29C33/722—Compositions for cleaning moulds
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098—Metal salts of carboxylic acids

Definitions

  • the present invention relates to a purging agent used for removing a resin residue existing inside a resin molding apparatus. More specifically, the resin residue generated when melt-molding a resin composition containing a thermoplastic resin or a mixture thereof, in particular, an ethylene-butalcohol copolymer (hereinafter sometimes referred to as EVOH) is used as a device. It relates to a purging agent for removal from the inside. The present invention also relates to a purging method using the purging agent.
  • EVOH ethylene-butalcohol copolymer
  • E VOH is recognized as a packaging material for food and other packaging films, containers, especially foods that require oxygen barrier properties, and products that require fragrance retention. 'In addition, EVOH has excellent barrier properties against gasoline and is used as a raw material for plastic fuel tanks.
  • E V OH is formed into various molded products by melt molding, either alone or mixed with other thermoplastic resins.
  • melt molding for example, melt extrusion molding
  • EV OH or a mixture of E VO H and another thermoplastic resin if a long time operation is performed, the resin flow path of the molding apparatus These resins may stay and gel or decompose, resulting in the formation of foreign substances such as gelled products and bumps.
  • powder or gel-like materials may be mixed in the resulting product, or streaks may appear in the product, or thickness unevenness may occur in the product, resulting in a poor appearance.
  • a plastic fuel tank generally has a multilayer structure including a recycled material layer (for example, high density polyethylene (HDPE) outer layer / recycled material layer / adhesive layer / EVOH layer Z adhesive layer / HDPE inner layer)
  • a recycled material layer for example, high density polyethylene (HDPE) outer layer / recycled material layer / adhesive layer / EVOH layer Z adhesive layer / HDPE inner layer
  • the recycled material layer contains gel-like materials, bushes, etc. that are thought to be generated by excessive heating.
  • EVOH-containing resin composition when molding is performed using EVOH or a resin mixture containing EVOH and a thermoplastic resin (hereinafter sometimes referred to as EVOH-containing resin composition), if the operation of the device is stopped, In many cases, resin-modified products derived from these resins (such as EVOH yellowed due to deterioration, gelled products derived from EVOH, foamed decomposition products, etc.) remain, or they often occur over time. Therefore, when the operation is resumed, these modified resins are discharged over a long period of time together with the newly introduced molding resin. Therefore, it takes a long time to obtain a normal product, and many non-standard products are generated. In the worst case, it is necessary to disassemble the device and clean the inside of the flow path. In particular, the plastic fuel tank molding and processing apparatus is much larger and more complex than the food packaging molding apparatus, and the disassembly and cleaning of the flow path requires a great deal of cost and time.
  • the inside of the resin flow path is filled with a predetermined resin
  • the method of replacing with is adopted.
  • resins such as HDPE, linear low-density polyethylene, polystyrene, and polypropylene are used as purging agents.
  • a resin having a low melt viscosity index (melt index; sometimes abbreviated as Ml) (for example, 0.05 to 10 101! 1 at 190 ° C) in.) is used as a purging agent, or steps are taken to switch to a low M l resin step by step to lower the extrusion temperature or increase the discharge rate.
  • the purging operation is complicated and takes a long time, and a large amount of purging agent is required.
  • the resin material for molding for example, the EVOH-containing resin composition
  • the purging agent itself Has the disadvantage of being difficult to discharge.
  • a resin having a low Ml is used in order to increase the purging efficiency
  • products containing purging agents are produced over a long period of time. Such products are contaminated with gels or gums resulting from purging agents.
  • problems such as tearing of the product due to gels or sticky materials caused by the purging agent, pinholes, and the like. Thus, it takes a long time to obtain a normal product.
  • Japanese Patent Application Laid-Open No. 5-27 9 5 18 discloses a purging agent comprising a composition containing a polyolefin resin and a Group II metal salt.
  • This purging agent has a relatively excellent effect.
  • the purging agent may contain EVOH as required.
  • E VOH that is, a mixture of polyolefin and E VOH.
  • these molten resins react and easily gel. For this reason, such a purging agent has poor removal efficiency of gelated substances staying in the resin flow path.
  • Japanese Patent Application Laid-Open No. 5-26 9 75 4 discloses a purging agent made of a thermoplastic resin having a predetermined MI. It is described that E V OH is suitable as such a resin. Furthermore, it is described that a mixture obtained by adding a predetermined amount of a predetermined metal salt and an acidic substance to this EVOH is used as a purging agent. This document describes that in order to increase the efficiency of purging, it is preferable to use a resin having a low MI at the beginning of melting as a purging agent.
  • an object of the present invention is to provide a purging agent capable of effectively removing a gelled, deteriorated or decomposed resin remaining in a resin flow path of a molding apparatus; and the above EV OH-containing resin composition
  • the object is to provide a purging agent that can be discharged in a short time when the operation of the molding apparatus is resumed using an object.
  • the purging agent of the present invention contains an ethylene monobutyl alcohol copolymer, an alkaline earth metal salt, and a boron compound, and 1 g of the ethylene monobutyl alcohol copolymer contains the alkali earth metal. Salt is 8-8 0 ⁇ ⁇ ⁇ 1, and The boron compound is contained at a rate of 8 to 80 / zmo 1, and the intrinsic viscosity [ ⁇ ] of the ethylene-vinyl alcohol copolymer is 0.120 L / g or less, and 190% of the purging agent.
  • the melt viscosity index MI at 0 ° C is 0 ⁇ 70 g / 10 min or less.
  • the alkaline earth metal salt is an alkaline earth metal salt of a fatty acid.
  • the boron compound is boric acid.
  • the purging agent is introduced into a resin molding apparatus to bring the resin residue present inside the molding apparatus into contact with the purging agent, and then the resin residue is purged with the purging agent. And removing from the molding apparatus together with the agent.
  • the resin residue is derived from a resin composition containing an ethylene-vinyl alcohol copolymer subjected to molding.
  • the purging agent of the present invention contains EVOH, alkaline earth metal, and boron compound.
  • the components contained in the purging agent of the present invention, the purging agent, and the purging method using the same are described below.
  • Ethylene-vinyl alcohol copolymer (EVOH)
  • EVOH used in the purging agent of the present invention is an ethylene monoacetate butyl saponified copolymer.
  • EVOH used in the present invention has an intrinsic viscosity of 0.120 LZg or less.
  • the intrinsic viscosity of EVOH is measured by the method described in Examples below. When the above intrinsic viscosity [77] is higher than 0.120 L / g, the viscosity of the purging agent itself becomes extremely high, and the purging agent is not easily discharged from the resin flow path. Further, the intrinsic viscosity of EVOH is preferably not less than 0.090 LZg.
  • the ethylene content of EV OH is preferably 15 to 70 mol%, more preferably 20 to 60 mol%, and the degree of saponification of the vinyl acetate moiety is preferably 90% or more, Preferably it is 95% or more.
  • This EV OH may be modified with a small amount of copolymerization monomer.
  • the modifying monomer include propylene, 1-butene, 1-hexene, 4-methyl-11-pentene, acrylic acid ester, methacrylic acid ester, maleic acid, phthalic acid, itaconic acid, alkyl vinyl ether, N-butylpyrrolidone.
  • This EVOH is usually saponified by adding caustic alcohol or alkali metal alcoholate to an alcohol solution of ethylene-vinyl acetate copolymer, and then washing sodium acetate, which is a by-product during saponification, with water. Then, it is obtained by adding an acid, immersing it in an acid solution, and adding a combination of a certain metal salt and an acid.
  • an alkali metal salt of fatty acid is preferably used.
  • the fatty acid include fatty acids having 12 to 30 carbon atoms such as stearic acid and palmitic acid.
  • Al-powered earth metals include magnesium, calcium, and barium.
  • magnesium stearate, calcium stearate or the like is preferably used, and magnesium stearate is more preferably used. These alkaline earth metal salts may be used alone or in combination of two or more May be used in combination.
  • Alkaline earth metal salts have a function of acting on the EVOH main chain and cutting it when the purging agent is heated and melted. Therefore, when the purging agent is introduced into the resin flow path of the molding apparatus, it has a function of decomposing the resin residue derived from E V O H present in the flow path. Further, after removing the resin residue, E V O H in the purging agent present in the flow path is decomposed to lower the molecular weight, so that the purging agent can be easily discharged.
  • the alkaline earth metal salt is contained in an amount of 8 to 80 / mol, preferably 17 to 42 / mol, and more preferably 25 to 40 / z mol per 1 g of EVOH.
  • amount of the alkaline earth metal salt is less than 8 / m o 1
  • the resin residue is not sufficiently decomposed, and as a result, the resin residue may be insufficiently removed.
  • the purging agent itself decomposes severely and does not exhibit an effective purging effect.
  • Examples of the boron compound used in the purging agent of the present study include boric acids, borates, borates, and borohydrides.
  • examples of boric acid include boric acid, orthoboric acid, metaboric acid, and tetraboric acid.
  • Examples of boric acid esters include triethyl borate and trimethyl borate.
  • examples include alkali metal salts of the above various boric acids, alkaline earth metal salts, and borax. Of these compounds, boric acid is preferred. These boron compounds may be used alone or in combination of two or more.
  • Boron compounds have the function of crosslinking EVOH and lowering its Ml when the purging agent is heated and melted. Therefore, when the purging agent is introduced into the resin flow path of the molding device, the MI of the purging agent decreases, and the adhering resin is removed. It can be effectively removed.
  • the boron compound is contained in an amount of 8 to 80 ⁇ 1, preferably 16 to 70 / mol, and more preferably 20 to 48 ⁇ 1 with respect to 1 g of EVOH.
  • the amount of the boron compound is less than 8 ⁇ 1, when the purging agent is heated and melted and introduced into the resin flow path of the molding apparatus, it is relatively less than the viscosity of the resin residue adhering to the resin flow path. Therefore, the resin residue cannot be removed sufficiently. Conversely, if it exceeds 80 ⁇ 1 / g, the viscosity of the purging agent itself becomes extremely high, and the purging agent itself is not easily discharged from the resin flow path.
  • the purging agent of the present invention contains EVOH, alkaline earth metal, and boron compound in the predetermined ratio. Specifically, the purging agent is obtained by mixing these components, and the mixing order is not particularly limited.
  • the melt viscosity index Ml at 1 90 ° C. of this purging agent is 0.70 g / 10 min or less, preferably 0.60 g / 10 min or less. Accordingly, the types and amounts of the EVOH, the alkaline earth metal, and the boron compound are appropriately set so as to achieve such a melt viscosity index.
  • the melt viscosity index (Ml) of the purging agent is preferably 0.20 gZl Omin or more. When the above MI exceeds 0.70 gZl 0min, the purging performance is insufficient.
  • the melt viscosity index is measured by the method described in Examples below. This purging agent usually has an intrinsic viscosity that is almost the same as the intrinsic viscosity of the contained EVOH.
  • the purging agent of the present invention is particularly useful for removing resin residues present in a molding apparatus when molding is performed using a resin composition containing EVOH.
  • a resin composition containing EVOH used for the above molding ethylene-vinyl A resin mixture containing 1 to 50% by mass of a rualcohol copolymer is preferred. Examples thereof include recovered resins such as scraps and burrs generated during the formation of a multilayer structure including an EVOH layer, and EVOH is preferably contained in a proportion of 1 to 50% by mass.
  • thermoplastic resins other than EVOH examples include polyolefins (polyethylene, polypropylene, etc.), unsaturated carboxylic acids or their anhydrides, modified polyolefins, polystyrene, polyamides, polyesters, polybutyl chloride, and polyvinylidene chloride. Of these, polyolefin is particularly preferred. These thermoplastic resins may be contained alone or in combination of two or more.
  • the perzinc agent decomposes EVOH and the gelled product formed by the reaction of EVOH with other resins, lowers the viscosity, and facilitates discharge. Therefore, the EVOH content in the resin composition used for the above molding is 1 mass. If it is less than 0 , the effect of the purging agent may not be fully exhibited. On the other hand, if the EVOH content in the resin composition used for molding exceeds 50% by mass, depending on the operating conditions of the equipment, for example, at a high temperature of 260 ° C or higher, the EVOH content may be low. Viscosity may progress too much and the purging effect may be reduced. In particular, a resin composition containing EVOH in a proportion of 1 to 40% by mass is suitable.
  • the action when purging using the purging agent of the present invention is not particularly limited, but for example, the following actions can be considered.
  • the purging agent of the present invention has a function of decomposing a resin residue such as a gelated product generated by the reaction of EVOH and EVOH with another resin by the action of an alkaline earth metal.
  • a resin residue such as a gelated product generated by the reaction of EVOH and EVOH with another resin by the action of an alkaline earth metal.
  • the resin residue in the molding apparatus becomes low in viscosity and can be easily discharged.
  • This decomposition proceeds gradually.
  • EVOH is cross-linked by the action of the boron compound, so the viscosity of the parsing agent became high (Ml decreased) and the resin residue or decomposed. Resin residue can be easily discharged.
  • the decomposition of the purging agent gradually proceeds to lower the viscosity, so that the purging agent itself can be easily discharged.
  • the purging agent is put into the extrusion apparatus, Purging resin residue that remains (present) in the road.
  • the melt extrusion apparatus is not particularly limited.
  • co-extrusion blow molding machine, co-injection molding machine and the like are examples of a single screw extruder, a twin screw extruder, a single layer film forming machine, a single layer inflation film forming machine, a coextrusion sheet film forming machine, a coextrusion film forming machine.
  • co-extrusion blow molding machine co-injection molding machine and the like.
  • the purging agent it is desirable to add about 6 to 20 times the amount of the resin remaining in the extruder after the resin composition disappears in the hopper into which the resin composition used for molding is placed.
  • it is effective to increase the screw rotation speed, periodically increase or decrease the rotation speed, or change the extrusion temperature (for example, increase the temperature).
  • M l is higher than the resin composition used for molding, and MI is lower than the purging agent.
  • the operation may be stopped by lowering the temperature, and the operation of the molding apparatus may be resumed immediately using the resin composition.
  • the temperature is maintained or raised while the purging agent remains in the molding equipment, and the extruder is stopped for about 1 to 48 hours, thereby purging in the extruder.
  • the resin composition intended for molding can be added to continue the operation.
  • a plurality of purging agents with different M l are used, and the purging agents with lower M l are introduced into the molding apparatus in order (in stages). Then, it may be preferable to introduce a resin composition intended for molding.
  • the purging agent of the present invention can be used to remove a resin remaining in a resin flow path inside the apparatus or a modified product (resin residue) such as a gel derived from the resin in a thermoplastic resin melt molding apparatus. It is possible to remove it quickly.
  • This purging agent is particularly effective when a resin composition containing EVOH is melt-molded, and the purging agent itself can be quickly discharged from the apparatus. Therefore, when the device is operated again after purging, the product loss due to mixing of the purging agent can be greatly improved. Therefore, the purging agent of the present invention and the purging method using the same are advantageously used particularly in the production of various resin molded products containing EVOH, and in the production of various molded products using a recovered resin containing EVOH.
  • the intrinsic viscosity of EVO H and the melt viscosity index (melt index; M I) of the purging agent were measured by the following methods.
  • 77 sp and Tj rel are the specific viscosity (specif i C V1SCOS1 ty) and relative viscosity (relative viscosity), respectively. 77 sp and rel are given by:
  • t o is the time for the blank hydrophenol to pass through the viscometer (90 seconds here), and t is the time for the EVOH hydrophenol solution to pass through the viscometer.
  • the purging agent in the present invention was produced by melt extrusion as follows. Ethylene content as the EVOH 3 2 mole 0/0, a saponification degree of 9 9.6 mole 0/0, and the intrinsic viscosity [77] of 0. 1 1 2 LZg Ebaru F 1 0 1 (Co. Kuraray-made Prepared. EVOH 25 kg, boric acid 50 g (0.2 phr with respect to EVOH mass; 3 2.3 ⁇ 1 per EVOH mass), and magnesium stearate 500 g (2 phr with respect to EVOH mass; EVO H Weighed 33.3 / zmol per lg. Next, these raw materials were put into a 120 L tumbler and mixed for 10 minutes.
  • the temperature of the extruder was immediately raised to 240 ° C and held for 16 hours to prepare a model for EVOH residence deterioration.
  • the temperature of the extruder was lowered to 220 ° C, the lip was opened, and 500 g of recovered resin containing EVOH was introduced into the extruder at 66 rpm (1.4 kg / hr) and filled. Was replaced with this recovered resin.
  • This recovered resin is a resin that contains 7% by mass of EVOH, which is obtained by recovering scrap burrs generated during the formation of plastic fuel tanks.
  • Film surface rank A Number of books is less than 5
  • Film surface rank B Number of books 5 or more and less than 20
  • Film surface rank C 20 or more
  • a purging agent pellet was obtained in the same manner as in Example 1 except that the amount of boric acid was changed, and evaluation was performed using this.
  • a purging agent capable of quickly sweeping away a resin remaining in a resin flow path inside the apparatus or a modified material such as a gel derived from the resin.
  • the This purging agent is especially E VO This is effective when melt-molding a resin composition containing H, and the purging agent itself can be quickly discharged from the apparatus. For this reason, when the apparatus is operated again after purging, the product loss due to mixing of the purging agent can be greatly improved. Therefore, the purging method using the purging agent of the present invention is particularly suitable for the production of various resin molded articles containing EV OH, or for various molded articles containing a recovered resin containing EV OH. It is advantageously used for manufacturing.

Landscapes

  • 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)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L’invention concerne un agent de purge utilisé pour des appareils de moulage de résine. L'agent de purge comprend un copolymère d'éthylène-alcool vinylique, un sel d'un métal alcalinoterreux et un composé du bore. L'agent de purge contient 8-80 µmol du sel de métal alcalinoterreux et 8-80 µmol du composé du bore pour 1 g du copolymère d'éthylène-alcool vinylique. La viscosité limite [η] du copolymère d'éthylène-alcool vinylique contenu dans cet agent de purge n'est pas supérieure à 0,120 l/g et l'indice de fluage à l'état fondu MI de l'agent de purge à 190°C n'est pas supérieur à 0,70 g/10 min. En utilisant un tel agent de purge, on peut facilement enlever les résidus de résine restant dans un canal de résine d'un appareil de moulage. En plus, on peut faire sortir l'agent de purge sur une courte durée lorsqu'on recommence à utiliser l'appareil de moulage.
PCT/JP2006/314539 2005-07-20 2006-07-18 Agent de purge Ceased WO2007011045A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007526074A JPWO2007011045A1 (ja) 2005-07-20 2006-07-18 パージング剤

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-210163 2005-07-20
JP2005210163 2005-07-20

Publications (1)

Publication Number Publication Date
WO2007011045A1 true WO2007011045A1 (fr) 2007-01-25

Family

ID=37668915

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/314539 Ceased WO2007011045A1 (fr) 2005-07-20 2006-07-18 Agent de purge

Country Status (2)

Country Link
JP (1) JPWO2007011045A1 (fr)
WO (1) WO2007011045A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057039A (zh) * 2008-04-10 2011-05-11 菲门特斯Uab公司 核酸的制备
JP2015073448A (ja) * 2013-10-07 2015-04-20 株式会社クラレ 植物栽培用培地、並びにそれを用いた植物栽培装置および植物栽培方法
US10448584B2 (en) 2013-10-07 2019-10-22 Kuraray Co., Ltd. Medium for plant cultivation, and apparatus and method for plant cultivation including the same
JP7036478B1 (ja) * 2020-11-27 2022-03-15 林化成株式会社 成形機用洗浄剤
CN117417789A (zh) * 2023-10-19 2024-01-19 太仓立日包装容器有限公司 一种再生ibc吨桶绿色清洗溶剂

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05269754A (ja) * 1992-03-25 1993-10-19 Kuraray Co Ltd パージング剤
JPH05279518A (ja) * 1992-03-31 1993-10-26 Kuraray Co Ltd パージング剤
JPH10672A (ja) * 1996-06-18 1998-01-06 Kuraray Co Ltd パージング方法
JPH1016023A (ja) * 1996-06-26 1998-01-20 Nippon Synthetic Chem Ind Co Ltd:The パージング剤
JPH1067040A (ja) * 1996-06-18 1998-03-10 Kuraray Co Ltd パージング剤およびパージング方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5307960B2 (ja) * 1999-12-16 2013-10-02 株式会社クラレ ロングラン性の改善されたエチレン−ビニルアルコール共重合体樹脂組成物およびその成形物

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05269754A (ja) * 1992-03-25 1993-10-19 Kuraray Co Ltd パージング剤
JPH05279518A (ja) * 1992-03-31 1993-10-26 Kuraray Co Ltd パージング剤
JPH10672A (ja) * 1996-06-18 1998-01-06 Kuraray Co Ltd パージング方法
JPH1067040A (ja) * 1996-06-18 1998-03-10 Kuraray Co Ltd パージング剤およびパージング方法
JPH1016023A (ja) * 1996-06-26 1998-01-20 Nippon Synthetic Chem Ind Co Ltd:The パージング剤

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102057039A (zh) * 2008-04-10 2011-05-11 菲门特斯Uab公司 核酸的制备
US8580548B2 (en) 2008-04-10 2013-11-12 Thermo Fisher Scientific Baltics, UAB Production of nucleic acid
US8835148B2 (en) 2008-04-10 2014-09-16 Thermo Fisher Scientific Baltics, UAB Production of nucleic acid
US9683251B2 (en) 2008-04-10 2017-06-20 Thermo Fisher Scientific Baltics Uab Production of nucleic acid
US10287614B2 (en) 2008-04-10 2019-05-14 Thermo Fisher Scientific Baltics Uab Production of nucleic acid
US10358670B2 (en) 2008-04-10 2019-07-23 Thermo Fisher Scientific Baltics Uab Production of nucleic acid
JP2015073448A (ja) * 2013-10-07 2015-04-20 株式会社クラレ 植物栽培用培地、並びにそれを用いた植物栽培装置および植物栽培方法
US10448584B2 (en) 2013-10-07 2019-10-22 Kuraray Co., Ltd. Medium for plant cultivation, and apparatus and method for plant cultivation including the same
JP7036478B1 (ja) * 2020-11-27 2022-03-15 林化成株式会社 成形機用洗浄剤
JP2022085906A (ja) * 2020-11-27 2022-06-08 林化成株式会社 成形機用洗浄剤
JP7112797B2 (ja) 2020-11-27 2022-08-04 林化成株式会社 成形機用洗浄剤
CN117417789A (zh) * 2023-10-19 2024-01-19 太仓立日包装容器有限公司 一种再生ibc吨桶绿色清洗溶剂

Also Published As

Publication number Publication date
JPWO2007011045A1 (ja) 2009-02-05

Similar Documents

Publication Publication Date Title
JP3805685B2 (ja) エチレン−ビニルアルコール共重合体樹脂の製造方法
CN1503824A (zh) 使用成核剂与增塑剂的聚羟基链烷酸酯加工
JP5234585B2 (ja) ポリグリコール酸樹脂組成物の製造方法
TW546314B (en) Method for producing ethylene-vinyl alcohol copolymer resin
JP2008189941A (ja) エチレン−ビニルアルコール共重合体樹脂組成物からなる溶融成形品
JPS62179530A (ja) 成形物の製造方法
CN105849191A (zh) 促进和控制聚合物的降解的方法和系统
TW202239843A (zh) 再循環聚合物組成物及其方法
KR940001714B1 (ko) 압출가능한 폴리비닐 알코올 조성물 및 이의 제조방법
JP6660589B2 (ja) パージング剤
EP0848730A1 (fr) Materiau plastique biodegradable et procede servant a le fabriquer
CN102971130B (zh) 清洗剂和使用其的清洗方法
KR100334543B1 (ko) 퍼징제및퍼징방법
JPH0192203A (ja) 性質の改善されたエチレン―酢酸ビニル共重合体ケン化物組成物
WO2007011045A1 (fr) Agent de purge
JP3784499B2 (ja) パージング剤およびパージング方法
JP5307960B2 (ja) ロングラン性の改善されたエチレン−ビニルアルコール共重合体樹脂組成物およびその成形物
JP5178048B2 (ja) パージング材及びこれを用いるパージング方法
US5965624A (en) Self purging EVOH compositions, and methods
JP5908298B2 (ja) 乾燥剤含有樹脂組成物ペレットの製造方法
JP3762705B2 (ja) エチレン−ビニルアルコール共重合体樹脂組成物の製造方法
JP4564246B2 (ja) 樹脂組成物及びその製造方法
JP4117232B2 (ja) 樹脂組成物及びその製造方法
KR102844498B1 (ko) 폴리하이드록시알카노에이트를 포함하는 펠렛의 제조방법 및 이로부터 제조된 펠렛
JPH10672A (ja) パージング方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2007526074

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06781461

Country of ref document: EP

Kind code of ref document: A1