US4002485A
Expired / Lapsed
US
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Process for the production of thermoplastic synthetic materials of chemically modified protein and plastic shaping materials of chemically modified protein and a chemical plasticizer
Assignee: Hoechst AG
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Filing: 1975-10-03
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Granted: 1977-01-11
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Expires: 1995-10-03
Abstract
Abstract This invention relates to a process for the production of a thermoplastic synthetic material of chemically modified protein which comprises mixing an aqueous alkaline protein solution with an aqueous solution of a tetrafunctional, doubly unsaturated compound of the general formula ##STR1## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR2## in which R 4 is an alkyl group with 1 to 18 carbon atoms, SUBJECTING THE LIQUID MIXTURE TO A DWELL TIME, CAUSING A PRECIPITATING LIQUID TO ACT UPON THE LIQUID, VISCOUS MIXTURE, FREEING THE FORMED PRECIPITATE FROM EXCESS LIQUID, DRYING, MIXING THE PRECIPITATE WITH AN AT LEAST BIFUNCTIONAL, SATURATED, ORGANIC COMPOUND, AND SUBJECTING THE MIXTURE TO HEAT AND PRESSURE. The invention also relates to a plastic material of chemically modified protein.
Inventors
- 👤 Klaus-Dieter Hammer
- 👤 Wolfgang Klendauer
- 👤 Max Bytzek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:57
CPC Classifications
C; C08; C08L; C08L89/00; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; C08F; C08F289/00; C08H; C08H1/00; C08K; C08K5/00; C08K5/0008; C08K5/0016; C08K5/04; C08K5/05; C08K5/16; C08L71/00; C08L71/02; A22C2013/0059; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/832
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
143 words
A process for the production of a thermoplastic synthetic material of chemically modified protein which comprises mixing an aqueous alkaline protein solution with an aqueous solution of a tetrafunctional, doubly unsaturated compound of the general formula ##STR9## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR10## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid, viscous mixture, freeing the formed precipitate from excess liquid, drying, mixing the precipitate with an at least bifunctional, saturated, organic compound, and subjecting the mixture to heat and pressure.
Claim 2
Dependent Claim
143 words
A process for the production of a thermoplastic synthetic material of chemically modified protein which comprises mixing an aqueous alkaline protein solution with an aqueous solution of a tetrafunctional, doubly unsaturated compound of the general formula ##STR9## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR10## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid, viscous mixture, freeing the formed precipitate from excess liquid, drying, mixing the precipitate with an at least bifunctional, saturated, organic compound, and subjecting the mixture to heat and pressure.
Claim 3
Dependent Claim
18 words
A process according to claim 1 in which the tetrafunctional, doubly unsaturated, organic compound is N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide.
Claim 4
Dependent Claim
21 words
A process according to claim 1 in which the at least bifunctional, saturated, organic compound is triglycol or polyethylene glycol 200.
Claim 5
Dependent Claim
15 words
A process according to claim 1 in which the precipitating liquid is an aqueous acid.
Claim 6
Dependent Claim
158 words
A process for the production of a shaping material composed of a plastic material of chemically modified protein and a chemical plasticizer, which comprises mixing an aqueous alkaline protein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR11## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR12## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the formed precipitate from excess liquid, drying, and mixing the precipitate with an at least bifunctional, saturated, organic compound and additionally with a chemical plasticizer, and subjecting the mixture to heat and pressure.
Claim 7
Dependent Claim
158 words
A process for the production of a shaping material composed of a plastic material of chemically modified protein and a chemical plasticizer, which comprises mixing an aqueous alkaline protein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR11## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR12## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the formed precipitate from excess liquid, drying, and mixing the precipitate with an at least bifunctional, saturated, organic compound and additionally with a chemical plasticizer, and subjecting the mixture to heat and pressure.
Claim 8
Dependent Claim
19 words
A process according to claim 5 in which the tetrafunctional, doubly unsaturated, organic compound used is N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide.
Claim 9
Dependent Claim
23 words
A process according to claim 5 in which the at least bifunctional saturated, chemical cross-linking compound used is triglycol or polyethylene glycol 200.
Claim 10
Dependent Claim
15 words
A process according to claim 1 in which the chemical plasticizer used is dibutyl adipate.
Claim 11
Dependent Claim
12 words
A process according to claim 1 in which the protein is casein.
Claim 12
Dependent Claim
11 words
A tube of a plastic material produced according to claim 1.
Claim 13
Dependent Claim
10 words
A tube of a material produced according to claim 5.
Claim 14
Dependent Claim
155 words
A plastic material of chemically modified protein obtained by mixing an aqueous alkaline protein solution with an aqueous solution of an organic, unsaturated, bifunctional compound of the general formula ##STR13## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR14## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the precipitate from excess liquid, mixing the precipitate with an organic, saturated, chemical compound having at least two OH or at least two NH 2 groups or at least one OH and at least one NH 2 group, and subjecting the mixture to heat and pressure.
Claim 15
Dependent Claim
155 words
A plastic material of chemically modified protein obtained by mixing an aqueous alkaline protein solution with an aqueous solution of an organic, unsaturated, bifunctional compound of the general formula ##STR13## in which R 1 and R 2 are hydrogen or an alkyl group with 1 to 6, preferably 1 to 3, carbon atoms, and R 3 is the group --(CH 2 ) n --, n being an integer from 1 to 8, or the group ##STR14## in which R 4 is an alkyl group with 1 to 18 carbon atoms, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the precipitate from excess liquid, mixing the precipitate with an organic, saturated, chemical compound having at least two OH or at least two NH 2 groups or at least one OH and at least one NH 2 group, and subjecting the mixture to heat and pressure.
Claim 16
Dependent Claim
87 words
A plastic material of chemically modified protein obtained by mixing an aqueous alkaline protein solution with an aqueous solution of N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the precipitate from excess liquid, mixing the precipitate with an organic, saturated compound with at least two OH or at least two NH 2 groups or at least one OH and at least one NH 2 group, and subjecting the mixture to heat and pressure.
Claim 17
Dependent Claim
87 words
A plastic material of chemically modified protein obtained by mixing an aqueous alkaline protein solution with an aqueous solution of N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide, subjecting the liquid mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, freeing the precipitate from excess liquid, mixing the precipitate with an organic, saturated compound with at least two OH or at least two NH 2 groups or at least one OH and at least one NH 2 group, and subjecting the mixture to heat and pressure.
Claim 18
Dependent Claim
16 words
A shaping material composed of a plastic material according to claim 13 and a chemical plasticizer.
Claim 19
Dependent Claim
16 words
A shaping material according to claim 14 in which the plasticizer is triglycol or polyethylene 200.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |