US3943252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane casein coating composition
Assignee: Bayer AG
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Filing: 1974-02-25
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Granted: 1976-03-09
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Expires: 1994-02-25
Abstract
Abstract Compositions suitable for coating leather or textile materials are provided which compositions are the reaction product of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde.
Inventors
- 👤 Walter Schroer
- 👤 Helmut Reiff
- 👤 Dieter Dieterich
- 👤 Karl Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:13
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/83; C08G18/84; C08L; C08L75/00; C08L75/04; C14; C14C; C14C11/00; C14C11/003; C14C11/006; D06M15/01; D06M15/15; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2352; Y10T442/2369; Y10T442/2393; Y10T442/2549; Y10T442/2566; Y10T442/259; Y10T442/273
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A coating composition comprising the reaction product of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde, in such proportions that from about 10 to about 1,000 parts by weight of (b) and from about 1 to about 60 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
Claim 2
Dependent Claim
66 words
A coating composition comprising the reaction product of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde, in such proportions that from about 10 to about 1,000 parts by weight of (b) and from about 1 to about 60 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein component (a) is a base treated casein and component (b) is selected from the group consisting of non-ionically emulsified, anionic or anionically emulsified polyurethanes.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein component (a) is reacted with the reaction product of components (b) and (c).
Claim 5
Dependent Claim
22 words
The composition of claim 1 wherein component (b) is present in an amount of about 20 to about 700 parts by weight.
Claim 6
Dependent Claim
22 words
The composition of claim 1 wherein component (b) is present in an amount of about 50 to about 600 parts by weight.
Claim 7
Dependent Claim
41 words
A process for coating leather or textile materials comprising applying an aqueous dispersion of the reactants of claim 1 to a suitable substrate at room temperature and heating the coated substrate to a temperature of from about 40° to about 140°C.
Claim 8
Dependent Claim
11 words
A coated textile material prepared by the process of claim 6.
Claim 9
Dependent Claim
11 words
A coated leather material prepared by the process of claim 6.
Claim 10
Dependent Claim
63 words
A coating composition comprising the reaction product of (a) solubilized casein (b) water dispersible polyurethane and (c) formaldehyde, in such proportions that from 218 to 887 parts by weight of (b) and from 18 to 300 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
Claim 11
Dependent Claim
63 words
A coating composition comprising the reaction product of (a) solubilized casein (b) water dispersible polyurethane and (c) formaldehyde, in such proportions that from 218 to 887 parts by weight of (b) and from 18 to 300 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
Claim 12
Dependent Claim
62 words
A coating composition comprising the reaction production of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde, in such proportions that from 218 to 624 parts by weight of (b) and from 18 to 300 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
Claim 13
Dependent Claim
62 words
A coating composition comprising the reaction production of (a) solubilized casein (b) water-dispersible polyurethane and (c) formaldehyde, in such proportions that from 218 to 624 parts by weight of (b) and from 18 to 300 parts by weight of (c) are present per 100 parts by weight of solid material (a) wherein the reactants are reacted at temperatures between 40° and 140°C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |