US4255570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyisocyanate reaction products of diisocyanates and s-triazine derivatives containing amino groups
Assignee: Bayer AG
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Filing: 1978-08-03
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Granted: 1981-03-10
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Expires: 1998-08-03
Abstract
Abstract The invention relates to polyisocyanates corresponding to the following general formula: ##STR1## wherein X represents a radical of the type obtained by removing the more reactive isocyanate group from an organic diisocyanate containing isocyanate groups of different reactivity; and Y represents a chlorine, bromine, C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 6 -C 10 aryl, C 6 -C 10 aroxy radical or a radical corresponding to the general formula: --NH--CO--NH--X.
Inventors
- 👤 Gerhard Grogler
- 👤 Holger Meyborg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/48; C07D251/52; C07D251/14; C07D251/16; C07D251/18; C07D251/50; C07D251/54; C07D251/70; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8054; C08G18/8058
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
A polyisocyanate of the formula: ##STR5## wherein x represents a radical obtained by removing the more reactive isocyanate group from an organic diisocyanate containing isocyanate groups of different reactivity; and Y represents a chlorine, bromine, C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 6 -C 10 aryl, C 6 -C 10 aroxy radical or a radical corresponding to the formula: --NH--CO--NH--X.
Claim 2
Dependent Claim
64 words
A polyisocyanate of the formula: ##STR5## wherein x represents a radical obtained by removing the more reactive isocyanate group from an organic diisocyanate containing isocyanate groups of different reactivity; and Y represents a chlorine, bromine, C 1 -C 8 alkyl, C 1 -C 8 alkoxy, C 6 -C 10 aryl, C 6 -C 10 aroxy radical or a radical corresponding to the formula: --NH--CO--NH--X.
Claim 3
Dependent Claim
20 words
A polyisocyanate of the formula: ##STR6## wherein X represents a 3-isocyanato-4-methyl phenyl or a 4-(o-isocyanatobenzyl)-phenyl radical; and Y represents --NH--CO--NH--X.
Claim 4
Dependent Claim
20 words
A polyisocyanate of the formula: ##STR6## wherein X represents a 3-isocyanato-4-methyl phenyl or a 4-(o-isocyanatobenzyl)-phenyl radical; and Y represents --NH--CO--NH--X.
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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |