EP0404728A2
Expired / Lapsed
EP
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Polymer base blend compositions containing destructurized starch
Assignee: Warner Lambert Co LLC
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Filing: 1990-06-18
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Granted: —
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Expires: 2010-06-18
Abstract
Abstract A thermoplastic polymer composition comprising a) destructurized starch, and b) at least one polymer selected from the group consisting of polymers which contain tertiary amino groups and/or salts thereof and/or quaternary ammonium groups; said polymer being present in an amount effective to enhance the physical properties of said articles. The composition may contain further conventional additives as well as hydrophobic, substantially water-insoluble polymers.
Inventors
- 👤 Jakob Silbiger
- 👤 Jean-Pierre Sachetto
- 👤 David John Lentz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 15:36
CPC Classifications
C; C08; C08L; C08L3/00; C08L3/02; C08L39/00; C08L39/04; C08L39/08; C08L57/00; C08L57/06; C08L57/12
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
59 words
A composition of matter capable of being formed into articles having substantial dimensional stability comprising a) destructurized starch, and b) at least one polymer selected from the group consisting of polymers which contain tertiary amino groups and/or salts thereof and/or quaternary ammonium groups; said polymer being present in an amount effective to enhance the physical properties of said articles.
Claim 2
Dependent Claim
59 words
A composition of matter capable of being formed into articles having substantial dimensional stability comprising a) destructurized starch, and b) at least one polymer selected from the group consisting of polymers which contain tertiary amino groups and/or salts thereof and/or quaternary ammonium groups; said polymer being present in an amount effective to enhance the physical properties of said articles.
Claim 3
Dependent Claim
49 words
A composition according to claim 1 wherein component b) further contains a functional group selected from the groups consisting of hydroxy, alkoxy, carboxy, carboxyalkyl, alkyl carboxy, halo, pyrrolidono; said groups being selected from those which will not react with the amino groups present and will not degrade the starch.
Claim 4
Dependent Claim
37 words
A composition according to the claim 1 or 2 wherein the polymer of component b) is a synthetic polymer as obtained by the polymerization of monomers containing tertiary amino groups and/or salts thereof and/or quarternary ammonium groups.
Claim 5
Dependent Claim
63 words
A composition according to the claim 1 or 2 wherein the polymer of component b) is a polymer as obtained by the polymerization or copolymerzization of a compound resp. of compounds selected from the group consisting of poly(2-vinyl pyridine); poly(4-vinyl pyridine); polyvinyl carbazole, 1-vinyl imidazole and/or salts thereof and/or their quarternized derivatives, optionally by copolymerization of said amines with acrylonitrile, butylmethacrylate or styrene.
Claim 6
Dependent Claim
60 words
A composition according to anyone of the claims 1 to 4 wherein the polymer of component b) contains repeating units of the formula -(CH₂ - H)- (I) wherein R = NR₁R₂; - R₁R₂R₃A ⊖ wherein R₁ and R₂ together represent a pyridine residue; a carbazyl residue; an imidazolyl residue, R₃ is H or alkyl (C₁ - C₂₁), = an anion.
Claim 7
Dependent Claim
28 words
A composition according to the claim 5 wherein the polymer of component b) is derived from a monomer selected from the group 2-vinyl-pyridine; 4-vinyl pyridine; and vinyl carbazole.
Claim 8
Dependent Claim
28 words
The composition according to anyone of the claims 1 to 6 wherein the weight % ratio of destructurized starch to component b) is about 1:99 to about 99:1.
Claim 9
Dependent Claim
32 words
The composition according to anyone of the claims 1 to 6 wherein destructurized starch is present in amounts of about 50 % to about 99 % by weight of the total composition.
Claim 10
Dependent Claim
50 words
The composition according to anyone of the claims 1 to 8 wherein the destructurized starch has a water content of about 5 % to about 40 % by weight of the total starch content, preferably of about 10 % to about 22 % by weight of the total starch content.
Claim 11
Dependent Claim
38 words
The composition according to anyone of the claims 1 to 9 wherein there is additionally incorporated component c) comprising an substantially water-insoluble thermoplastic polymer which does not fall within the definition of those compounds defined as component b).
Claim 12
Dependent Claim
41 words
The composition according to claim 10 wherein said component c) is selected from the group consisting of polyolefines, vinyl polymers, polystyrenes, polyacrylonitriles, polyacrylates, polymethacrylates, polyacetals, thermoplastic polycondensates, polyarylethers, thermoplastic polyimides, high molar-mass substantially water-insoluble or crystallizable poly(alkylene oxides), and mixtures thereof.
Claim 13
Dependent Claim
28 words
The composition of claim 11 wherein component c) is selected from the group consisting of polyethylenes, polypropylenes, polyisobutylenes, ethylene oxide polymers, propylene oxide polymers, polystyrene and mixtures thereof.
Claim 14
Dependent Claim
30 words
The composition of claim 11 wherein component c) is selected from the group consisting of poly(vinyl chlorides), poly(vinyl acetate), polyamides, thermoplastic polyesters, thermoplastic polyurethanes, polycarbonates, poly(alkylene terephthalates) and mixtures thereof.
Claim 15
Dependent Claim
45 words
The composition according to claim 10 wherein component c) is selected from the group consisting of alkylene/vinyl ester-copolymers, alkylene/acrylate or methacrylate copolymers, ABS copolymers; styrene/acrylonitrile copolymers, acrylic acid esters/acrylonitrile copolymers; acrylamide/acrylonitrile copolymers; block copolymers of amide-ethers, amide-esters; block copolymers of urethane-ethers, urethane-esters; and mixture thereof.
Claim 16
Dependent Claim
34 words
The composition according to claim 14 wherein component c) is selected from the group consisting of ethylene/vinyl alcohol-copolymers, styrene/acrylonitril-copolymers; block copolymers of amide-ethers, amide-esters; block copolymers of urethane-ethers, urethane-esters; as well as their mixtures.
Claim 17
Dependent Claim
63 words
The composition according to anyone of the claims 1 to 15 wherein the sum of components b) and c) constitute about 1 % to about 99 % by weight of the total composition, preferably about 20 % to about 80 % by weight of the total composition, and most preferably about 1 % to about 30 % by weight of the total composition.
Claim 18
Dependent Claim
47 words
The composition according to anyone of the claims 1 to 16 wherein there are additionally incorporated one or more materials selected from the group consisting of adjuvants, fillers, lubricants, mold release agents, plasticizers, foaming agents, stabilizers, extenders, chemical modifiers, flow accelerators, coloring agents, pigments and mixtures thereof.
Claim 19
Dependent Claim
12 words
The composition according to claim 17 further containing an agriculturally active compound.
Claim 20
Dependent Claim
16 words
The composition according to anyone of the claims 1 to 18 which is a melt blend.
Claim 21
Dependent Claim
17 words
The composition according to anyone of the claims 1 to 18 which is a cooled solidified blend.
Claim 22
Dependent Claim
12 words
The composition according to claim 20 in particulate, granulated or pelletized form.
Claim 23
Dependent Claim
129 words
A thermoplastic destructurized-starch product made from a composition as claimed in anyone of the claims 1 to 18, 20 and 21 having substantial dimensional stability formed by the process comprising: 1) providing a mixture comprising starch at least one polymer selected from the group consisting of polymers which contain tertiary amino groups and/or salts thereof and/or quaternary ammonium groups; said polymer being present in an amount effective to enhance the physical properties of said articles (component b). 2) heating said mixture in a closed volume under sufficient temperature and pressure for a time long enough to effect destructurization of said starch and form a substantially homogenous melt; 3) shaping said melt into an article; and 4) allowing said shaped article to cool to a substantially dimensionally stable thermoplastic product.
Claim 24
Dependent Claim
45 words
The product according to claim 22 wherein destructurization of the starch is carried out at a temperature above its melting point and glass transition temperature, preferably at temperatures of about 105°C to about 240°C, and most preferably at temperatures of about 130°C to about 190°C.
Claim 25
Dependent Claim
41 words
The product according to the claims 22 or 23 wherein the melt is formed under the range of pressure from the minimum pressure necessary to avoid formation of water vapour under the applied temperature up to about 150 x 10⁵ N/m².
Claim 26
Dependent Claim
35 words
The product according to claim 23 wherein the heat and pressure are maintained until the starch has undergone the specific narrow endothermic transition just prior to its endothermic change characteristic of oxidative and thermal degradation.
Claim 27
Dependent Claim
18 words
The product according to the claim 22 or 25 which is a granulate, a pellet or a powder.
Claim 28
Dependent Claim
35 words
The product according to claim 26 further melted and processed to form a shaped article selected from the group consisting of containers, bottles, pipes, rods, packaging material, sheets, foams, films, sacks, bags and pharmaceutical capsules.
Claim 29
Dependent Claim
30 words
The shaped articles according to claim 26 wherein the further melting and processing comprises foaming, filming, compression molding, injection molding, blow molding, extruding, co-extruding, vacuum forming, thermoforming and combinations thereof.
Claim 30
Dependent Claim
100 words
A thermoplastic destructurized-starch substantially homogenous melt made from a composition according to anyone of the claims 1 to 18, 20 and 21 formed by the process comprising: 1) providing a mixture comprising starch at least one polymer selected from the group consisting of polymers which contain tertiary amino groups and/or salts thereof and/or quaternary ammonium groups; said polymer being present in an amount effective to enhance the physical properties of said articles (component b), 2) heating said mixture in a closed volume under sufficient temperature and pressure for a time long enough to destructurize said starch and form said melt.
Claim 31
Dependent Claim
25 words
The melt according to claim 29 wherein destructurization of the starch is carried out at a temperature above its melting point and glass transition temperature.
Claim 32
Dependent Claim
33 words
The melt according to claim 30 wherein destructurization of the starch is carried out at a temperature of about 105°C to about 240°C, preferably at a temperature of about 130°C to about 190°C.
Claim 33
Dependent Claim
43 words
The melt according to anyone of the claims 29 to 31 wherein the melt is formed under the range of pressure from the minimum pressure necessary to avoid formation of water vapour under the applied temperature up to about 150 x 10⁵ N/m².
Claim 34
Dependent Claim
40 words
The melt according to anyone of the claims 29 to 31 wherein the heat and pressure are maintained until the starch has undergone the specific narrow endothermic transition just prior to its endothermic change characteristic of oxidative and thermal degradation.
References Cited (Backward Citations)
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