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US5360844A
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Articles manufactured with a composition containing a polymer of unsaturated hydrocarbon, a C1-4 alkyl or hydroxyalkylether of starch and a vinyl or acryl polymer as a compatibilizing agent
Assignee: Cargill Inc
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Filing: 1994-01-07
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Granted: 1994-11-01
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Expires: 2014-01-07
Abstract
Abstract Articles manufactured with a composition comprising a polymer of an unsaturated hydrocarbon, a C 1-4 alkyl or hydroxyalkylether of starch having a degree of substitution of at least 0.25, and a polyhydric aliphatic alcohol having 2 to 10 carbon atoms and 2 to 6 hydroxyl groups; wherein the compatibilizing agent can be a vinyl copolymer, acrylic copolymer and mixtures thereof. The composition can be used in the preparation of biodegradable plastics.
Inventors
- 👤 Rita M. Delrue
- 👤 Anton L. German
- 👤 Henricus E. H. Meijer
- 👤 Antonius H. Zijderveld
- 👤 Jan Bussink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; C08K5/09; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0869; C08L3/00; C08L3/04; C08L3/08; C08L2205/00; C08L2205/08; C08L2207/00; C08L2207/06; C08L2207/066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
Articles produced from a composition containing a polymer of an unsaturated hydrocarbon, a C 1-4 alkyl or hydroxyalkyl ether of starch having a degree of substitution of at least 0.25 and a compatibilizing agent selected from the group consisting of copolymers of ethylene-vinyl acetate, ethylene-acrylic acid, and terpolymers of ethylene-vinyl acetate-(meth)acrylic acid, wherein the composition also contains a polyhydric aliphatic alcohol having 2-10 carbon atoms and 2-6 hydroxyl groups as a dispersant/plasticizer/lubricant for the starch ether.
Claim 2
Dependent Claim
76 words
Articles produced from a composition containing a polymer of an unsaturated hydrocarbon, a C 1-4 alkyl or hydroxyalkyl ether of starch having a degree of substitution of at least 0.25 and a compatibilizing agent selected from the group consisting of copolymers of ethylene-vinyl acetate, ethylene-acrylic acid, and terpolymers of ethylene-vinyl acetate-(meth)acrylic acid, wherein the composition also contains a polyhydric aliphatic alcohol having 2-10 carbon atoms and 2-6 hydroxyl groups as a dispersant/plasticizer/lubricant for the starch ether.
Claim 3
Dependent Claim
117 words
Articles produced from a composition containing a polymer of an unsaturated hydrocarbon, a C 1-4 alkyl or hydroxyalkyl ether of starch having a degree of substitution of at least 0.25 and a compatibilizing agent selected from the group consisting of copolymers of ethylene-vinyl acetate, ethylene-acrylic acid, vinyl acetate-(meth) acrylic acid and terpolymers of ethylene-vinyl acetate-(meth) acrylic acid, wherein the composition also contains a polyhydric aliphatic alcohol having 2-10 carbon atoms and 2-6 hydroxy groups as a dispersant/plasticizer/lubricant for the starch ether, wherein said composition is prepared by a process which comprises extruding the starch ether and the polyhydric alcohol together as a homogeneous material and thereafter admixing this material with the other components and extruding this mixture.
Claim 4
Dependent Claim
117 words
Articles produced from a composition containing a polymer of an unsaturated hydrocarbon, a C 1-4 alkyl or hydroxyalkyl ether of starch having a degree of substitution of at least 0.25 and a compatibilizing agent selected from the group consisting of copolymers of ethylene-vinyl acetate, ethylene-acrylic acid, vinyl acetate-(meth) acrylic acid and terpolymers of ethylene-vinyl acetate-(meth) acrylic acid, wherein the composition also contains a polyhydric aliphatic alcohol having 2-10 carbon atoms and 2-6 hydroxy groups as a dispersant/plasticizer/lubricant for the starch ether, wherein said composition is prepared by a process which comprises extruding the starch ether and the polyhydric alcohol together as a homogeneous material and thereafter admixing this material with the other components and extruding this mixture.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |