US4008247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylenically unsaturated blocked aromatic diisocyanates
Assignee: Goodrich Corp
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Filing: 1975-02-18
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Granted: 1977-02-15
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Expires: 1995-02-18
Abstract
Abstract Ethylenically unsaturated blocked aromatic diisocyanates are prepared which readily polymerize to form homopolymers and interpolymers with copolymerizable vinylidene monomers. Polymers can be prepared via emulsion polymerization, and exhibit excellent stability to hydrolysis when stored in latex form. The polymers cure at temperatures as low as 80° C., and under acidic, neutral, or basic pH conditions. Homopolymers and interpolymers of the defined diisocyanates are useful as adhesives, and interpolymers of the ethylenically unsaturated blocked aromatic diisocyanates with acrylate monomers are particularly useful as binders for nonwoven fibers.
Inventors
- 👤 Harold A. Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:07
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D249/00; C07D249/16; C07D249/18; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/728; C08G18/80; C08G18/8061; C08G18/807; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31884; Y10T428/31891; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
102 words
An ethylenically unsaturated blocked aromatic diisocyanate of the formula ##STR33## wherein R is hydrogen or a methyl or ethyl radical; A is a carbonyloxyalkylene radical containing 2 to about 8 carbon atoms or an aralkylene radical containing 7 to about 12 carbon atoms; B is a bivalent aromatic radical selected from the group consisting of arylene, naphthalene, and the structure ##STR34## where R is defined as above; Y is O, S, or --CH 2 ) n ; n = 0 to 3; and X is the radical fragment remaining after a hydrogen atom is removed from the nitrogen atom of a benzotriazole.
Claim 2
Dependent Claim
102 words
An ethylenically unsaturated blocked aromatic diisocyanate of the formula ##STR33## wherein R is hydrogen or a methyl or ethyl radical; A is a carbonyloxyalkylene radical containing 2 to about 8 carbon atoms or an aralkylene radical containing 7 to about 12 carbon atoms; B is a bivalent aromatic radical selected from the group consisting of arylene, naphthalene, and the structure ##STR34## where R is defined as above; Y is O, S, or --CH 2 ) n ; n = 0 to 3; and X is the radical fragment remaining after a hydrogen atom is removed from the nitrogen atom of a benzotriazole.
Claim 3
Dependent Claim
40 words
An ethylenically unsaturated blocked aromatic diisocyanate of claim 1 wherein R is hydrogen or a methyl radical; B is phenylene, tolylene, naphthalene, or the defined structure where Y is --CH 2 ) n , and n = 0 to 1.
Claim 4
Dependent Claim
47 words
An ethylenically unsaturated blocked isocyanate of claim 2 where X is the radical fragment remaining after a hydrogen atom is removed from the nitrogen atom of a benzotriazole selected from the group consisting of benzotriazole, halogen-substituted benzotriazole, nitro-substituted benzotriazole, and 1 to 4 carbon atom alkyl-substituted benzotriazole.
Claim 5
Dependent Claim
24 words
An isocyanate of claim 3 where X is the radical fragment remaining after a hydrogen atom is removed from the nitrogen atom of methyl-benzotriazole.
Claim 6
Dependent Claim
10 words
The isocyanate of claim 4 of the structure ##STR35## ##STR36##
Claim 7
Dependent Claim
9 words
The isocyanate of claim 4 of the structure ##STR37##
References Cited (Backward Citations)
US2958704A
Cited
US3248398A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |