DE19757147A1 - Derivatized starch based polymer blend - Google Patents
Derivatized starch based polymer blendInfo
- Publication number
- DE19757147A1 DE19757147A1 DE1997157147 DE19757147A DE19757147A1 DE 19757147 A1 DE19757147 A1 DE 19757147A1 DE 1997157147 DE1997157147 DE 1997157147 DE 19757147 A DE19757147 A DE 19757147A DE 19757147 A1 DE19757147 A1 DE 19757147A1
- Authority
- DE
- Germany
- Prior art keywords
- groups
- blends according
- blends
- polyester
- starch
- 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- Withdrawn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
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 239000004628 starch-based polymer Substances 0.000 title abstract description 3
- 229920003179 starch-based polymer Polymers 0.000 title abstract 2
- 150000002148 esters Chemical class 0.000 claims abstract description 20
- 229920002472 Starch Polymers 0.000 claims abstract description 13
- 235000019698 starch Nutrition 0.000 claims abstract description 13
- 239000008107 starch Substances 0.000 claims abstract description 12
- -1 aliphatic alcohols Chemical class 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 8
- 229920000570 polyether Polymers 0.000 claims abstract description 8
- 229920006149 polyester-amide block copolymer Polymers 0.000 claims abstract description 7
- 229920005862 polyol Polymers 0.000 claims abstract description 5
- 150000003077 polyols Chemical class 0.000 claims abstract description 5
- 150000002009 diols Chemical class 0.000 claims abstract description 4
- 239000004014 plasticizer Substances 0.000 claims abstract description 4
- 229920002959 polymer blend Polymers 0.000 claims abstract description 3
- 229920000728 polyester Polymers 0.000 claims abstract 7
- MKRNVBXERAPZOP-UHFFFAOYSA-N Starch acetate Chemical compound O1C(CO)C(OC)C(O)C(O)C1OCC1C(OC2C(C(O)C(OC)C(CO)O2)OC(C)=O)C(O)C(O)C(OC2C(OC(C)C(O)C2O)CO)O1 MKRNVBXERAPZOP-UHFFFAOYSA-N 0.000 claims description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 4
- BTXXTMOWISPQSJ-UHFFFAOYSA-N 4,4,4-trifluorobutan-2-one Chemical compound CC(=O)CC(F)(F)F BTXXTMOWISPQSJ-UHFFFAOYSA-N 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 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 claims description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011256 inorganic filler Substances 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 229920006146 polyetheresteramide block copolymer Polymers 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 1
- 239000012766 organic filler Substances 0.000 claims 1
- 229920001634 Copolyester Polymers 0.000 abstract 2
- 150000004653 carbonic acids Chemical class 0.000 abstract 2
- 150000001991 dicarboxylic acids Chemical class 0.000 abstract 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000000945 filler Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920000945 Amylopectin Polymers 0.000 description 1
- 229920000856 Amylose Polymers 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229920008262 Thermoplastic starch Polymers 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229920000229 biodegradable polyester Polymers 0.000 description 1
- 239000004622 biodegradable polyester Substances 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000012764 mineral filler Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K5/10—Esters; Ether-esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/04—Starch derivatives, e.g. crosslinked derivatives
- C08L3/06—Esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/025—Polyesters derived from dicarboxylic acids and dihydroxy compounds containing polyether sequences
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/12—Polyester-amides
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
Die Erfindung betrifft Polymerblends auf Basis von Stärkeestern und synthetischen bioabbaubaren Materialien, vorrangig für den Einsatz im Spritzgußbereich.The invention relates to polymer blends based on starch esters and synthetic biodegradable materials, primarily for use in injection molding.
In den letzten Jahren wurde weltweit intensiv nach Möglichkeiten zur Reduzierung
der Abfallmengen bzw. zur sinnvollen Verwertung von Abfällen gesucht. So ist eine
Vielzahl von biologisch abbaubaren bzw. kompostierbaren Werkstoffen bekannt ge
worden. Prinzipiell lassen sich dabei zwei Richtungen unterscheiden:
In recent years there has been an intensive search worldwide for ways to reduce the amount of waste or to utilize it sensibly. A variety of biodegradable or compostable materials have become known. In principle, two directions can be distinguished:
- 1. Naturstoffe bzw. modifizierte, derivatisierte Naturpolymere1. Natural products or modified, derivatized natural polymers
- 2. Synthetische Polymere auf Erdölbasis2. Synthetic petroleum-based polymers
Der Einsatz der ersten Gruppe, zu der vorrangig Stärke, Cellulose und Lignin gehö ren, ist, da es sich um nachwachsende Rohstoffe handelt, die auch dezentral produ ziert und verarbeitet werden können, im Sinne einer nachhaltigen Wirtschaftsent wicklung günstiger. Nachteil dieser Produktgruppe ist eine durch die von der Natur vorgegebene Struktur, die oftmals nur eingeschränkte Einsatzmöglichkeiten zuläßt. Bis zu einem gewissen Grad kann man dem durch Derivatisierung (z. B: Cellulose acetat, Stärkeacetat, Ligninsulfat) entgegenwirken. Auch durch Zugabe von Weich machern, in vielen Fällen für eine thermoplastische Verarbeitung dieser Produkt gruppe unbedingt nötig (EP 0 638 609), ist eine Eigenschaftsmodifizierung möglich.The use of the first group, which primarily includes starch, cellulose and lignin Ren, is because it is renewable raw materials that also decentralized produ can be decorated and processed, in the sense of a sustainable economic ent winding cheaper. The disadvantage of this product group is one caused by nature predetermined structure, which often only allows limited application possibilities. To a certain extent, this can be achieved through derivatization (e.g. cellulose counteract acetate, starch acetate, lignin sulfate). Also by adding soft makers, in many cases for thermoplastic processing of this product group absolutely necessary (EP 0 638 609), a property modification is possible.
Demgegenüber haben synthetische Polymere auf Erdölbasis den Vorteil, daß sich ihre Eigenschaften durch Kombination relativ vieler, von Mikroorganismen verwert barer Monomerenbausteine (Amide, Ester, Ether) in weiten Bereichen variieren las sen. Natürlich sind hier durch die Vorgabe der Bioabbaubarkeit Grenzen gesetzt. Deshalb fehlen meist in solchen Verbindungen stabilisierende Elemente, wie z. B. aromatische Bauteile. In Folge dessen sind sie zumeist sehr weich und elastisch, aber nicht sehr formbeständig.In contrast, synthetic petroleum-based polymers have the advantage that their properties by combining a relatively large number of microorganisms The monomer units (amides, esters, ethers) can vary widely sen. Of course, there are limits here due to the stipulation of biodegradability. Therefore, stabilizing elements, such as e.g. B. aromatic components. As a result, they are mostly very soft and elastic, but not very dimensionally stable.
Die Kombination von je einem Vertreter der beiden Gruppen bringt in einigen Fällen einen guten Kompromiß der Vor- und Nachteile der beiden genannten Gruppen. The combination of one representative from each of the two groups brings in some cases a good compromise between the advantages and disadvantages of the two groups mentioned.
Beispiele dafür sind Blends aus thermoplastischer Stärke und Ethylen-Vinyl alkohol-Copolymeren (u. a. EP 0 722 980), Polycaprolacton (J09194692), Polyvinylacetat (u. a. WO 92/16583).Examples include blends made from thermoplastic starch and ethylene vinyl alcohol copolymers (inter alia EP 0 722 980), polycaprolactone (J09194692), polyvinyl acetate (inter alia WO 92/16583).
Diese Blends bleiben aufgrund der Hydrophilie der Stärke relativ wasserempfindlich. Dieser Wasserempfindlichkeit kann entgegengewirkt werden, wenn statt thermopla stischer Stärke Stärkederivate, wie z. B. Stärkediacetat, verwendet werden.Because of the hydrophilicity of the starch, these blends remain relatively sensitive to water. This sensitivity to water can be counteracted if instead of thermopla starch derivatives, such as B. starch diacetate can be used.
Blends mit günstigen Eigenschaftskombinationen setzen entweder eine gute Ver träglichkeit der Blendkomponenten oder die Zuhilfenahme eines Verträglichkeits vermittlers voraus.Blends with favorable property combinations either set a good ver inertness of the blend components or the aid of a tolerance intermediary ahead.
Ein Beispiel für Blends mit relativ guter Verträglichkeit der Blendkomponenten und daraus resultierenden günstigen Blendeigenschaften ist in DE 44 43 539 gegeben. Die hier beschriebenen Blends sind vorrangig für den Einsatz im Folienbereich in teressant. Für den Spritzgußbereich, der oft größere Steifigkeit der Produkte erfor dert, sind bei diesem Material ähnlich wie für die nach DE 195 47 636 hergestellten Polyesteramide Füllstoffe zur Erhöhung der Steifigkeit erforderlich. In "BAK 1095 - das Jahr danach" (E. Grigat, Tagung "Biologisch abbaubare Werkstoffe", Abschnitt F, Würzburg 1997) wird ein Polyesteramid-Werkstoff mit erhöhter Steifigkeit vorge stellt. Der erreichte E-Modul von ca. 2000 Mpa wird aber nur durch den Einsatz von mehr als 60% mineralischem Füllstoff erzielt. Damit gilt das Material, obwohl der Bindemittelanteil abbaubar ist, nicht mehr als kompostierbar.An example of blends with relatively good tolerance of the blend components and the resulting favorable glare properties is given in DE 44 43 539. The blends described here are primarily for use in the film sector in interesting. For the injection molding area, which often requires greater stiffness of the products changed, are in this material similar to that produced according to DE 195 47 636 Polyester amide fillers required to increase rigidity. In "BAK 1095 - the year after "(E. Grigat, conference" Biodegradable Materials ", section F, Würzburg 1997) a polyester amide material with increased rigidity is proposed poses. The modulus of elasticity of approx. 2000 Mpa achieved is only achieved by using achieved more than 60% mineral filler. So the material applies, although the Binder content is degradable, no longer than compostable.
Hohe Steifigkeit wiederum ist bei Stärkediacetat (EP 683 609) als abgewandeltem Naturprodukt eine Grundeigenschaft. Daraus hergestellte Produkte sind aber, be sonders bei Verwendung von Ausgangsstärken mit Amylopektingehalten < 50%, aufgrund einer relativ geringen Schlagbiegefestigkeit für viele Anwendungen zu brüchig.In turn, high stiffness is modified with starch acetate (EP 683 609) Natural product a basic property. Products made from it are, however especially when using starches with amylopectin contents <50%, due to a relatively low impact resistance for many applications brittle.
Die Blendherstellung aus Stärkeestern und synthetischen biologisch abbaubaren Werkstoffen auf der Basis Ester-, Ether- oder Amidbindungen bringt zwar gewisse Effekte hinsichtlich der Formstabilität der synthetischen Produkte. Eine gute Schlag biegefestigkeit der Blends wird aber aufgrund der ungenügenden Verträglichkeit der meisten auf der genannten Basis zur Verfügung stehenden Polymere mit den ge nannten Stärkeestern erst bei einem Gehalt der synthetischen Komponente von mehr als 50% erreicht. Bei solchen Konzentrationen ist aber der E-Modul solcher Blends schon sehr niedrig.The blend production from starch esters and synthetic biodegradable Materials based on ester, ether or amide bonds bring certain Effects on the dimensional stability of the synthetic products. A good blow bending strength of the blends is due to the insufficient tolerance of the most of the polymers available on the basis mentioned with the ge called starch esters only when the synthetic component of reached more than 50%. At such concentrations the modulus of elasticity is such Blends are very low.
Die Aufgabe der Erfindung besteht darin, auf der Basis nachwachsender Rohstoffe biologisch abbaubare bzw. kompostierbare Spritzgußmaterialien zu entwickeln, die sich durch eine hohe Steifigkeit und gute Flexibilität auszeichnen.The object of the invention is based on renewable raw materials to develop biodegradable or compostable injection molding materials that are characterized by high rigidity and good flexibility.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß ein Blend aus 40 bis 80 Gew.-% eines Stärkeesters, dessen Ausgangsamylosegehalt bei 20 bis 100% liegt, vorzugsweise einem Stärkeacetat mit einem Substitutionsgrad von 1,5 bis 2,6, vor zugsweise 2,0 bis 2,4 und 20 bis 50 Gew.-% eines bioabaubaren Polyesters und/oder Polyesteramides und/oder Polyetheresters mit vorrangig aliphatischen Bausteinen und 5 bis 20% einer weichmachenden Komponente, die gleichzeitig eine verträglichkeitsvermittelnde Funktion zwischen den beiden Polymeren ausübt, hergestellt wird.According to the invention, the object is achieved in that a blend of 40 to 80 % By weight of a starch ester whose starting amylose content is 20 to 100%, preferably a starch acetate with a degree of substitution of 1.5 to 2.6 preferably 2.0 to 2.4 and 20 to 50 wt .-% of a biodegradable polyester and / or polyester amides and / or polyether esters with primarily aliphatic Building blocks and 5 to 20% of a softening component, the same time has a compatibility-imparting function between the two polymers, will be produced.
Als synthetische Blendkomponenten sind nur solche geeignet, die eine Kristallinität von maximal 40% aufweisen, vorzugsweise eine weitgehend röntgenamorphe Struktur aufweisen.Only synthetic components with a crystallinity are suitable as synthetic blend components of at most 40%, preferably a largely X-ray amorphous Have structure.
Die verträglichkeitsvermittelnden Substanzen müssen gleichzeitig als Weichmacher
für das Stärkeacetat bei Gewährleistung der biologischen Abbaubarkeit wirken. Er
findungsgemäß werden zu diesem Zwecke Ester und oligomere Ester folgender Zu
sammensetzung verwendet:
The compatibility-imparting substances must also act as plasticizers for the starch acetate while ensuring biodegradability. According to the invention, esters and oligomeric esters of the following composition are used for this purpose:
-
a) Säurekomponente:
Kohlensäure und/oder Dicarbonsäure mit n (CH2-) Grup pen (n = 0 bis 6, vorzugsweise 0 bis 4).a) Acid component:
Carbonic acid and / or dicarboxylic acid with n (CH 2 -) groups (n = 0 to 6, preferably 0 to 4). -
b) Alkoholkomponente:
aliphatische Alkohole mit n CH2-Gruppen (n = 1 bis 6, vor zugsweise 2 bis 4) und/oder
aliphatische Diole mit n CH2-Gruppen (n= 2 bis 6, vor zugsweise 2 bis 4) und/oder
Polyetherpolyole mit Molmassen von 100 bis 2000, bevor zugt von 200 bis 600 g/mol.b) Alcohol component:
aliphatic alcohols with n CH 2 groups (n = 1 to 6, preferably 2 to 4) and / or
aliphatic diols with n CH 2 groups (n = 2 to 6, preferably 2 to 4) and / or
Polyether polyols with molecular weights from 100 to 2000, before given from 200 to 600 g / mol.
Diese Ester zeichnen sich durch ein Ansatzverhältnis Carbonat : Diolkomponente von 1 : 0,6 bis 1 : 1,3, vorzugsweise von 1 : 0,8 bis 1 : 1,1 aus. Die OH-Zahl kann von 200 bis 600, vorzugsweise von 250 bis 400 variieren.These esters are characterized by a carbonate: diol component ratio from 1: 0.6 to 1: 1.3, preferably from 1: 0.8 to 1: 1.1. The OH number can be from Vary from 200 to 600, preferably from 250 to 400.
Eine weitere Verträglichkeitsvermittlung kann durch den Zusatz von 0,1 bis 5%, vorzugsweise 0,5 bis 2% Abietinsäure oder eines Abietinsäurederivates erreicht werden. In den hier beschriebenen Blends wirken sie jedoch verträglichkeitsvermit telnd, so daß die Eigenschaften des resultierenden Blends im Vergleich zu der ein fachen Mischung verbessert werden. Die so beschriebenen Blends zeichnen sich durch E-Module von über 1000 und durch Nicht-Bruch beim Schlagbiege-Test nach Charpy aus. Der Einsatz von organischen und oder anorganischen Füllstoffen wirkt sich in gewissen Konzentrationsbereichen qualitätsverbessernd auf die beschriebe nen Blends aus. Als Füllstoffe können dabei Talkum, Kreide, Glimmer oder Kaolin ebenso dienen, wie Holzmehl, Flachs- oder Hanffasern o. ä. Die Füllstoffe werden in einem Konzentrationsbereich von 0 bis 40% eingesetzt, vorrangig von 10 bis 25%. Dabei kann der E-Modul Werte bis 2000-5000 N/mm2 erreichen.A further compatibility can be achieved by adding 0.1 to 5%, preferably 0.5 to 2%, of abietic acid or an abietic acid derivative. In the blends described here, however, they have a compatibility effect, so that the properties of the resulting blend are improved compared to the simple mixture. The blends described in this way are characterized by elastic moduli of over 1000 and by non-fracture in the Charpy impact bending test. The use of organic and or inorganic fillers improves the quality of the blends described in certain concentration ranges. Talc, chalk, mica or kaolin can also serve as fillers, as can wood flour, flax or hemp fibers or the like. The fillers are used in a concentration range from 0 to 40%, primarily from 10 to 25%. The modulus of elasticity can reach values of 2000-5000 N / mm 2 .
Zur Herstellung der beschriebenen Blends ist es zweckmäßig, daß Stärkeacetat in einem Schnellmischer mit den weichmachenden/phasenvermittelnden Komponenten gemischt wird. Füllstoffe anorganischer oder organischer Art können diesem Ge misch ebenfalls beigefügt werden. Sie können aber ebenso, wie die synthetische Blendkomponente über eine separate Dosiereinheit in den Extruder zugegeben wer den. Günstig ist die Verwendung eines Zweiwellenkneters, der für eine gute Vertei lung der Blendkomponente sowie der Hilfs- und Füllstoffe in der Stärkeacetat Matrix sorgt.To produce the blends described, it is appropriate that starch acetate in a high-speed mixer with the softening / phase-imparting components is mixed. Fillers of inorganic or organic type can this Ge mix can also be added. But you can, just like the synthetic Blend component who added a separate metering unit in the extruder the. It is favorable to use a twin-screw kneader, which is good for distribution the blend component as well as the auxiliaries and fillers in the starch acetate matrix worries.
Für die folgenden Beispiele, die die erfindungsgemäße Vorgehensweise veran schaulichen, wurden außer der synthetischen Blendkomponente alle weiteren Be standteile der Mischung in einem Schnellmischer mit dem Stärkeacetat vermischt. Die verwendeten Rezepturen sind der Tabelle 1 zu entnehmen.For the following examples, which initiate the procedure according to the invention vivid, all other Be except the synthetic blend component Components of the mixture are mixed with the starch acetate in a high-speed mixer. The recipes used are shown in Table 1.
Tabelle 2 enthält einige der wesentlichen Kennwerte der angeführten Beispielmate
rialien. Die Kennwerte wurden an ISO- Normstäben mit den Abmessungen 80 mm×
10 mm×4 mm bzw. an Schulterstäben nach DIN 53455 gemessen. Die Kennwerte
wurden wie folgt ermittelt:
Schlagbiegefestigkeit: DIN ISO 1133
Biegefestigkeit: DIN 53488
Biege-E-Modul: DIN 53457
Zugfestigkeit: DIN 53455
HDT A (1,82): DIN 53461.Table 2 contains some of the key parameters of the sample materials listed. The characteristic values were measured on ISO standard rods with the dimensions 80 mm × 10 mm × 4 mm or on shoulder rods according to DIN 53455. The characteristic values were determined as follows:
Impact resistance: DIN ISO 1133
Flexural strength: DIN 53488
Bending modulus of elasticity: DIN 53457
Tensile strength: DIN 53455
HDT A (1.82): DIN 53461.
Die Migration wurde nach EG-Richtlinie 9318, EWG (Durchführung nach ASU B 80.30-1-3 EG) 1 h bei 70°C in Wasser geprüft. The migration was carried out in accordance with EC Directive 9318, EEC (implementation in accordance with ASU B 80.30-1-3 EG) tested for 1 h at 70 ° C in water.
Claims (11)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997157147 DE19757147A1 (en) | 1997-12-20 | 1997-12-20 | Derivatized starch based polymer blend |
| EP98963389A EP1051443A1 (en) | 1997-12-20 | 1998-12-08 | Polymer blends based on derivatised starch |
| PCT/DE1998/003601 WO1999032555A1 (en) | 1997-12-20 | 1998-12-08 | Polymer blends based on derivatised starch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1997157147 DE19757147A1 (en) | 1997-12-20 | 1997-12-20 | Derivatized starch based polymer blend |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE19757147A1 true DE19757147A1 (en) | 1999-06-24 |
Family
ID=7852927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1997157147 Withdrawn DE19757147A1 (en) | 1997-12-20 | 1997-12-20 | Derivatized starch based polymer blend |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1051443A1 (en) |
| DE (1) | DE19757147A1 (en) |
| WO (1) | WO1999032555A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012015491A1 (en) * | 2010-07-28 | 2012-02-02 | Hallstar Innovations Corp. | Biopolymer compositions having improved impact resistance |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3914022A1 (en) * | 1989-04-28 | 1990-10-31 | Aeterna Lichte Gmbh & Co Kg | BIODEGRADABLE PLASTIC MATERIALS |
| DE4117628A1 (en) * | 1991-05-29 | 1992-12-17 | Inventa Ag | METHOD AND DEVICE FOR PREPARING THERMAL MIXTURES AND PRODUCTS AVAILABLE THEREOF BY THIS PROCESS |
| EP0535994A1 (en) * | 1991-10-04 | 1993-04-07 | Director-General Of The Agency Of Industrial Science And Technology | Process for producing a starch-containing biodegradable plastic |
| DE4133335A1 (en) * | 1991-10-08 | 1993-04-15 | Inventa Ag | STARCH MIXTURE, METHOD FOR THE PRODUCTION AND USE THEREOF |
| WO1994007953A1 (en) * | 1992-10-07 | 1994-04-14 | Parke, Davis & Company | Starch ester blends with linear polyesters |
| WO1995004108A1 (en) * | 1993-07-27 | 1995-02-09 | Evercorn, Inc. | Biodegradable moldable products and films comprising blends of starch esters and polyesters |
| DE4424415A1 (en) * | 1993-08-04 | 1996-01-18 | Buna Gmbh | Biodegradable thermoplastic mixture of starch ester and poly alkylene glycol |
| DE4429269A1 (en) * | 1994-08-18 | 1996-02-22 | K & S Bio Pack Entwicklung | Process for the production of articles from thermoplastic amylose, molding compound for carrying out the process and molded part |
| DE9219021U1 (en) * | 1991-05-03 | 1997-02-27 | Novamont S.P.A., Mailand/Milano | Biodegradable polymer composition based on starch and thermoplastic polymers |
| DE19624641A1 (en) * | 1996-06-20 | 1998-01-08 | Biotec Biolog Naturverpack | Biodegradable material consisting essentially of or based on thermoplastic starch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5496557A (en) * | 1978-01-17 | 1979-07-31 | Teijin Ltd | Polyester resin composition |
-
1997
- 1997-12-20 DE DE1997157147 patent/DE19757147A1/en not_active Withdrawn
-
1998
- 1998-12-08 EP EP98963389A patent/EP1051443A1/en not_active Withdrawn
- 1998-12-08 WO PCT/DE1998/003601 patent/WO1999032555A1/en not_active Ceased
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3914022A1 (en) * | 1989-04-28 | 1990-10-31 | Aeterna Lichte Gmbh & Co Kg | BIODEGRADABLE PLASTIC MATERIALS |
| DE9219021U1 (en) * | 1991-05-03 | 1997-02-27 | Novamont S.P.A., Mailand/Milano | Biodegradable polymer composition based on starch and thermoplastic polymers |
| DE4117628A1 (en) * | 1991-05-29 | 1992-12-17 | Inventa Ag | METHOD AND DEVICE FOR PREPARING THERMAL MIXTURES AND PRODUCTS AVAILABLE THEREOF BY THIS PROCESS |
| EP0535994A1 (en) * | 1991-10-04 | 1993-04-07 | Director-General Of The Agency Of Industrial Science And Technology | Process for producing a starch-containing biodegradable plastic |
| DE4133335A1 (en) * | 1991-10-08 | 1993-04-15 | Inventa Ag | STARCH MIXTURE, METHOD FOR THE PRODUCTION AND USE THEREOF |
| WO1994007953A1 (en) * | 1992-10-07 | 1994-04-14 | Parke, Davis & Company | Starch ester blends with linear polyesters |
| WO1995004108A1 (en) * | 1993-07-27 | 1995-02-09 | Evercorn, Inc. | Biodegradable moldable products and films comprising blends of starch esters and polyesters |
| DE4424415A1 (en) * | 1993-08-04 | 1996-01-18 | Buna Gmbh | Biodegradable thermoplastic mixture of starch ester and poly alkylene glycol |
| DE4429269A1 (en) * | 1994-08-18 | 1996-02-22 | K & S Bio Pack Entwicklung | Process for the production of articles from thermoplastic amylose, molding compound for carrying out the process and molded part |
| DE19624641A1 (en) * | 1996-06-20 | 1998-01-08 | Biotec Biolog Naturverpack | Biodegradable material consisting essentially of or based on thermoplastic starch |
Non-Patent Citations (1)
| Title |
|---|
| CAPLUS Abstract, Ref. 1998:151178 zu WO 9807782 A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012015491A1 (en) * | 2010-07-28 | 2012-02-02 | Hallstar Innovations Corp. | Biopolymer compositions having improved impact resistance |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1051443A1 (en) | 2000-11-15 |
| WO1999032555A1 (en) | 1999-07-01 |
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