US3714128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurea coating based on cyanoalkylated polyoxyalkylene polyamines
Assignee: Texaco Inc
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Filing: 1971-06-25
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Granted: 1973-01-30
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Expires: 1991-06-25
Abstract
Abstract Polyureas prepared from an isocyanate and a cyanoalkylated polyoxyalkylene polyamine of the formula WHEREIN A is a cyano-lower-alkyl radical or hydrogen provided at least one A is a cyano-lower-alkyl radical are useful as spray coatings. These sprayed polyurea coatings are useful protective coatings which can be used in any field where protective coatings are desirable.
Inventors
- 👤 R Rowton
- 👤 E Yeakey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:22
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3838; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5051
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A polyurea composition obtained by reacting with an organic polyisocyanate or isocyanate-terminated prepolymer a cyanoalkylated polyoxyalkylene polyamine of the formula or mixtures thereof wherein R is the nucleus of an oxyalkylation-susceptible aliphatic polyhydric alcohol containing 2-12 carbon atoms and 2-8 hydroxyl groups, A is a cyano-lower-alkyl radical or hydrogen provided at least one A is a cyano-lower-alkyl radical, Z is an alkyl group containing 1-18 carbon atoms, X and Y are hydrogen or Z, n has an average value of 0-50 and m is 2-8.
Claim 2
Dependent Claim
85 words
A polyurea composition obtained by reacting with an organic polyisocyanate or isocyanate-terminated prepolymer a cyanoalkylated polyoxyalkylene polyamine of the formula or mixtures thereof wherein R is the nucleus of an oxyalkylation-susceptible aliphatic polyhydric alcohol containing 2-12 carbon atoms and 2-8 hydroxyl groups, A is a cyano-lower-alkyl radical or hydrogen provided at least one A is a cyano-lower-alkyl radical, Z is an alkyl group containing 1-18 carbon atoms, X and Y are hydrogen or Z, n has an average value of 0-50 and m is 2-8.
Claim 3
Dependent Claim
12 words
A composition according to claim 1 wherein the cyano-lower-alkyl radical is cyanoethyl.
Claim 4
Dependent Claim
27 words
A composition according to claim 2 wherein cyanoalkylated polyoxypropylene diamine is a compound of the formula wherein y is a number from about 2 to about 16.
Claim 5
Dependent Claim
17 words
A composition according to claim 3 wherein the cyanoalkylated polyoxypropylene diamine is a compound of the formula
Claim 6
Dependent Claim
17 words
A composition according to claim 2 wherein the cyanoalkylated polyoxypropylene triamine is a compound of the formula
Claim 7
Dependent Claim
12 words
A composition according to claim 1 wherein the cyano-lower-alkyl radical is cyanomethyl.
Claim 8
Dependent Claim
28 words
A composition according to claim 6 wherein the cyanoalkylated polyoxypropylene diamine is a compound of the formula wherein y is a number from about 2 to about 16.
Claim 9
Dependent Claim
17 words
A composition according to claim 7 wherein the cyanoalkylated polyoxypropylene diamine is a compound of the formula
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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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |