US4045462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bicyclic triisocyanates
Assignee: Bayer AG
•
Filing: 1976-04-05
•
Granted: 1977-08-30
•
Expires: 1996-04-05
Abstract
Abstract The instant invention is directed to new liquid bicycloaliphatic triisocyanates and to the use thereof as the isocyanate component in the production of polyurethane plastics by the known isocyanate-polyaddition process. The new triisocyanates are particularly suitable for use as the isocyanate component in low-solvent, light-stable two-component polyurethane lacquers.
Inventors
- 👤 Manfred Bock
- 👤 Walter Uerdingen
- 👤 Josef Pedain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:00
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/75; C08G18/758
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
A composition of matter comprising a triisocyanate corresponding to the following general formula: ##STR11## wherein R 1 , R 2 , R 3 and R 4 , which may be the same or different each represent a hydrogen atom, a methyl group or the radical --(CH 2 ) n --NCO, wherein n is an integer of from 1 to 3, wherein two of the radicals R 1 , R 2 , R 3 and R 4 represent --(CH 2 ) n --NCO, and wherein m = 1 to 2.
Claim 2
Dependent Claim
89 words
A composition of matter comprising a triisocyanate corresponding to the following general formula: ##STR11## wherein R 1 , R 2 , R 3 and R 4 , which may be the same or different each represent a hydrogen atom, a methyl group or the radical --(CH 2 ) n --NCO, wherein n is an integer of from 1 to 3, wherein two of the radicals R 1 , R 2 , R 3 and R 4 represent --(CH 2 ) n --NCO, and wherein m = 1 to 2.
Claim 3
Dependent Claim
38 words
The composition of claim 1 wherein R 1 is a --(CH 2 ) 3 --NCO radical, R 2 and R 3 each represent a hydrogen atom, R 4 is a --CH 2 --NCO radical, and m is 1.
Claim 4
Dependent Claim
38 words
The composition of claim 1 wherein R 1 and R 2 each represent a hydrogen atom, R 3 represents a --CH 2 --NCO radical, R 4 represents a --(CH 2 ) 3 --NCO radical, and m is 1.
Claim 5
Dependent Claim
38 words
The composition of claim 1 wherein R 1 represents a --(CH 2 ) 3 --NCO radical, R 2 and R 3 each represent a hydrogen atom, R 4 is a --CH 2 --NCO radical, and m is z.
Claim 6
Dependent Claim
38 words
The composition of claim 1 wherein R 1 and R 2 each represent a hydrogen atom, R 3 represents a --CH 2 --NCO radical, R 4 represents a --(CH 2 ) 3 --NCO radical, and m is z.
References Cited (Backward Citations)
US3492330A
Cited
US3625986A
Cited
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 |