US3666696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions comprising the reaction product of an organic polyisocyanate modified with a monohydric alcohol and an oil modified rosinous material
Assignee: Imperial Chemical Industries Ltd
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Filing: 1970-06-11
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Granted: 1972-05-30
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Expires: 1990-06-11
Abstract
Abstract Two-pack surface-coating compositions comprising in admixture (A) an essentially di-isocyanate product which is obtained by the reaction of a polyisocyanate of functionality of at least 3 or a mixture thereof with other polyisocyanates and a monohydric alcohol of molecular weight at least 70, and (B) the reaction product of an oil selected from castor oil, hydrogenated castor oil and mixtures thereof and a hydroxyl group-containing product based on rosin.
Inventors
- 👤 James Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:11
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; D06N3/142; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/36; C08G18/40; C08G18/54; C08G18/542; C08G18/64; C08G18/67; C08G18/68; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/8064
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
34 words
Coating compositions according to claim 1 characterized in that the polyisocyanate is a mixture obtained by the phosgenation of the mixture of amines prepared by the reaction of aniline with formaldehyde under acidic conditions.
Claim 2
Dependent Claim
17 words
COating compositions according to claim 1 characterized in that the aliphatic monohydroxy compound is an oxyethylated isooctanol.
Claim 3
Dependent Claim
39 words
Coating compositions according to claim 1 characterized in that there is used a mixture of castor oil and hydrogenated castor oil containing up to 15 percent by weight of hydrogenated castor oil based on the weight of castor oil.
Claim 4
Dependent Claim
36 words
Coating compositions according to claim 1 characterized in that the reaction product of said oil with said resin is obtained by heating the reactants together at a temperature of 235*-240* C. for one-half to 2 hours.
Claim 5
Dependent Claim
50 words
Coating compositions according to claim 1 characterized in that the reaction product of said oil and said resin is obtained by heating castor oil and said resin together at a temperature of 235*-240* C., adding hydrogenated castor oil at a lower temperature and completing the reaction at that lower temperature.
Claim 6
Dependent Claim
27 words
Coating compositions according to claim 1 characterized in the said oil and said resin are used in the proportions of from 95:5 to 20:80 parts by weight.
Claim 7
Dependent Claim
17 words
Coating compositions according to claim 1 which also contains a solvent which is inert to isocyanate groups.
References Cited (Backward Citations)
CA679761A
Cited
US3242230A
Cited
US3252924A
Cited
US3523093A
Cited
US3509103A
Cited
US3546148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |