Patent US4045239A successfully refreshed from Google Patents.
US4045239A
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Process for the production of thermoplastic synthetic materials and plastic shaping materials of chemically modified protein and a chemical plasticizer and including a bisacrylamide or bismethacrylamide
Assignee: Hoechst AG
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Filing: 1975-10-03
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Granted: 1977-08-30
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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, organic compound of the general formula ##STR1## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, Subjecting the mixture to a dwell time, causing a precipitating liquid to act upon it, freeing the formed precipitate from excess liquid, and drying. The invention also relates to a shaping material of plastic material of chemically modified protein and a chemical plasticizer. The invention also relates to a plastic material of modified protein.
Inventors
- 👤 Klaus-Dieter Hammer
- 👤 Wolfgang Klendauer
- 👤 Max Bytzek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:01
CPC Classifications
C; C08; C08F; C08F289/00; A; A22; A22C; A22C13/00; A22C13/0013; A22C13/0016; C08H; C08H1/00; C08K; C08K5/00; C08K5/0008; C08K5/0016
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
107 words
A process for the production of a thermoplastic synthetic material of chemically modified casein, which comprises mixing an aqueous alkaline casein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR4## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon it, freeing the formed precipitate from excess liquid, and drying.
Claim 2
Dependent Claim
107 words
A process for the production of a thermoplastic synthetic material of chemically modified casein, which comprises mixing an aqueous alkaline casein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR4## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon it, freeing the formed precipitate from excess liquid, and drying.
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
25 words
A process according to claim 1 in which the liquid mixture is stirred at a temperature in the range of about 60 to 90° C.
Claim 5
Dependent Claim
22 words
A process according to claim 1 in which the liquid mixture is subjected to a dwell time of 2 to 6 hours.
Claim 6
Dependent Claim
15 words
A process according to claim 1 in which the precipitating liquid is an aqueous acid.
Claim 7
Dependent Claim
15 words
A process according to claim 1 in which the liquid mixture contains a chemical catalyst.
Claim 8
Dependent Claim
34 words
A process according to claim 1 in which the liquid mixture contains about 2.5 to 6 percent by weight of N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide, calculated on the total weight of the casein in the solution.
Claim 9
Dependent Claim
126 words
A process for the production of a shaping material of plastic material of chemically modified casein and a chemical plasticizer, which comprises mixing an aqueous alkaline casein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR5## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon it, freeing the formed precipitate from excess liquid, drying, mixing it with a chemical plasticizer, and subjecting the mixture to heat and pressure.
Claim 10
Dependent Claim
126 words
A process for the production of a shaping material of plastic material of chemically modified casein and a chemical plasticizer, which comprises mixing an aqueous alkaline casein solution with an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR5## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon it, freeing the formed precipitate from excess liquid, drying, mixing it with a chemical plasticizer, and subjecting the mixture to heat and pressure.
Claim 11
Dependent Claim
18 words
A process according to claim 8 in which the tetrafunctional, doubly unsaturated, organic compound is N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide.
Claim 12
Dependent Claim
13 words
A process according to claim 8 in which the chemical plasticizer is dibutylhthalate.
Claim 13
Dependent Claim
13 words
A film or tube of a plastic material produced according to claim 1.
Claim 14
Dependent Claim
13 words
A film or tube of a shaping material produced according to claim 8.
Claim 15
Dependent Claim
101 words
A plastic material of modified casein comprising a chemical compound obtained by mixing an aqueous alkaline casein solution and an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR6## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, and drying the precipitated product.
Claim 16
Dependent Claim
101 words
A plastic material of modified casein comprising a chemical compound obtained by mixing an aqueous alkaline casein solution and an aqueous solution of a tetrafunctional, doubly unsaturated, organic compound of the general formula ##STR6## in which R 1 is hydrogen or an alkyl group with 1 to 18 carbon atoms, R 2 is hydrogen or an alkyl group with 1 to 6 carbon atoms, and R 3 is hydrogen or an alkyl group with 1 to 3 carbon atoms, subjecting the mixture to a dwell time, causing a precipitating liquid to act upon the liquid mixture, and drying the precipitated product.
Claim 17
Dependent Claim
19 words
A plastic material according to claim 13 in which the tetrafunctional, doubly unsaturated, organic compound is N-methylol-N,N'-methylene-bisacrylamide or N-methylol-N,N'-methylene-bismethacrylamide.
Claim 18
Dependent Claim
9 words
A film of plastic material according to claim 13.
Claim 19
Dependent Claim
9 words
A tube of plastic material according to claim 13.
Claim 20
Dependent Claim
15 words
A shaping material composed of plastic material according to claim 13 and a chemical plasticizer.
Claim 21
Dependent Claim
9 words
A tube of shaping material according to claim 17.
Claim 22
Dependent Claim
9 words
A film of shaping material according to claim 17.
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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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |