US5428150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch based material
Assignee: Cerestar Holding BV
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Filing: 1993-11-23
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Granted: 1995-06-27
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Expires: 2013-11-23
Abstract
Abstract A process for the extrusion of a starch-containing composition to produce a material suitable for the production of moulded articles in which the composition contains in addition to the starch a starch degradation product selected from starch hydrolysis products having DE's of 1 to 40, particularly a maltodextrin, oxidized starches and pyrodextrins.
Inventors
- 👤 Ingrid L. H. A. De Bock
- 👤 Philip M. R. Van Den Broecke
- 👤 Karl-Heinz Bahr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:02
CPC Classifications
C; C08; C08L; C08L3/00; C08L3/02; C08B; C08B30/00; C08B30/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
70 words
In a process for the manufacture of a composition suitable for the production of molded articles which comprises extruding a starch composition under conditions of temperature and pressure which will destructure the starch; the improvement in which the starch composition which is extruded contains starch and a starch degradation product selected from the group consisting of starch hydrolysis products having a DE of 1 to 40, oxidized starches and pyrodextrins.
Claim 2
Dependent Claim
70 words
In a process for the manufacture of a composition suitable for the production of molded articles which comprises extruding a starch composition under conditions of temperature and pressure which will destructure the starch; the improvement in which the starch composition which is extruded contains starch and a starch degradation product selected from the group consisting of starch hydrolysis products having a DE of 1 to 40, oxidized starches and pyrodextrins.
Claim 3
Dependent Claim
32 words
A process as set forth in claim 1 in which the starch in the starch composition is selected from the group consisting of maize starch, potato starch, tapioca starch and wheat starch.
Claim 4
Dependent Claim
17 words
A process as set forth in claim 2 in which the starch degradation product is a maltodextrin.
Claim 5
Dependent Claim
30 words
A process as set forth in any one of claims 1-3 in which the starch composition which is extruded contains 0.5 to 50% by weight of said starch degradation product.
Claim 6
Dependent Claim
27 words
A process as set forth in claim 4 in which the starch composition which is extruded contains 1 to 30% by weight of said starch degradation product.
Claim 7
Dependent Claim
21 words
A process as set forth in claim 1 in which the starch composition which is extruded contains up to 10% water.
Claim 8
Dependent Claim
19 words
A process as set forth in claim 1 in which the starch composition which is extruded contains a plasticizer.
Claim 9
Dependent Claim
27 words
A process as set fort in claim 7 in which the amount of plasticizer is 10 to 30% by weight of the starch composition which is extruded.
Claim 10
Dependent Claim
23 words
A process as set forth in claim 7 in which the plasticizer is a member of the group consisting of glycerol and sorbitol.
Claim 11
Dependent Claim
19 words
A process as set forth in claim 1 in which the starch composition which is extruded contains an emulsifier.
Claim 12
Dependent Claim
15 words
A process as set forth in claim 10 in which the emulsifier is glyceryl monostearate.
Claim 13
Dependent Claim
27 words
A process as set forth in claim 10 in which the amount of emulsifier is 1 to 20% by weight of the starch composition which is extruded.
Claim 14
Dependent Claim
34 words
A starch-containing composition for the manufacture by extrusion of a material suitable for the production of molded articles, said starch-containing composition comprising starch, a starch degradation product, a low molecular weight plasticizer and water.
Claim 15
Dependent Claim
34 words
A starch-containing composition for the manufacture by extrusion of a material suitable for the production of molded articles, said starch-containing composition comprising starch, a starch degradation product, a low molecular weight plasticizer and water.
Claim 16
Dependent Claim
14 words
A starch-containing composition as set forth in claim 13 which also contains an emulsifier.
Claim 17
Dependent Claim
48 words
A starch-containing composition as set forth in claim 14 which comprises corn starch, 10 to 30% by weight of a member of the group consisting of glycerol and sorbitol, 1 to 25% by weight of maltodextrin of DE 2 to 20 and 5 to 30% by weight water.
Claim 18
Dependent Claim
19 words
A composition as set forth in claim 15 which also contains up to 5% by weight of an emulsifier.
Claim 19
Dependent Claim
15 words
A composition as set forth in claim 16 in which the emulsifier is glyceryl monostearate.
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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) | 1998-06-26 | 1998-12-26 | 1999-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-26 | 2002-12-26 | 2003-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-26 | 2006-12-26 | 2007-06-27 | $7700.00 | Window Closed / Lapsed |