US4375539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid blocked crosslinking agents based on 1,4-cyclohexane bis(methylisocyanate)
Assignee: Eastman Chemical Co
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Filing: 1981-10-19
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Granted: 1983-03-01
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Expires: 2001-10-19
Abstract
Abstract Disclosed are new compositions of matter obtained from the reaction of 1,4-cyclohexane bis(methylisocyanate) and certain active hydrogen containing compounds such as phenols, lactams, oximes and acetoacetates, and the use of these compositions in curing hydroxylated resins.
Inventors
- 👤 Paul McBride
- 👤 George C. Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:17
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C08G18/74; C08G18/75; C08G18/751; C08G18/752; C08G18/757; C08G2150/00; C08G2150/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
92 words
A compound having the formula ##STR5## R is O to three of the same or different substituents selected from alkyl, --NR 1 R 2 , --NO 2 , halogen, alkoxy, aryl, alkaryl and cycloalkyl; R 1 and R 2 are alkyl; wherein each of the aforesaid alkyl moieties or R, R 1 and R 2 contains from 1 to 10 carbons and is straight or branched; R 3 is alkylene of from 2 to 8 carbons; R 1 is selected from alkyl, aryl and cycloalkyl; and n is 2, 3 or 4.
Claim 2
Dependent Claim
92 words
A compound having the formula ##STR5## R is O to three of the same or different substituents selected from alkyl, --NR 1 R 2 , --NO 2 , halogen, alkoxy, aryl, alkaryl and cycloalkyl; R 1 and R 2 are alkyl; wherein each of the aforesaid alkyl moieties or R, R 1 and R 2 contains from 1 to 10 carbons and is straight or branched; R 3 is alkylene of from 2 to 8 carbons; R 1 is selected from alkyl, aryl and cycloalkyl; and n is 2, 3 or 4.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 wherein A is ##STR6##
Claim 4
Dependent Claim
10 words
A compound according to claim 1 wherein A is ##STR7##
Claim 5
Dependent Claim
10 words
A compound according to claim 1 wherein A is ##STR8##
Claim 6
Dependent Claim
10 words
A compound according to claim 1 wherein A is ##STR9##
Claim 7
Dependent Claim
40 words
The method of curing hydroxylated polymeric material comprising mixing therewith a compound of claim 1 in a concentration sufficient to react with a substantial number of hydroxyl groups of the polymer, and thereafter heating the mixture to cause said reaction.
Claim 8
Dependent Claim
11 words
The method of claim 6 wherein the polymeric material is polyester.
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) | 1986-02-28 | 1986-08-30 | 1987-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-28 | 1990-08-30 | 1991-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-28 | 1994-08-30 | 1995-03-01 | $7700.00 | Window Closed / Lapsed |