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US4507443A
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Sealant and coating composition
Assignee: Goodrich Corp
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Filing: 1984-02-23
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Granted: 1985-03-26
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Expires: 2004-02-23
Abstract
Abstract A sealant or coating composition is described that is comprised of (a) a blocked isocyanate-terminated prepolymer in which essentially all NCO groups are blocked, (b) a multi-functional imine essentially free of any amine functionality formed by the reaction between a primary multi-functional amine with a ketone or aldehyde, and (c) from 0.1 to 10 parts by weight of an organosilane based upon 100 parts by weight of the blocked isocyanate-terminated prepolymer.
Inventors
- 👤 Larry R. Barron
- 👤 Pao-Chi Wang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/10; C09K3/1006; C09K3/1021; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G2190/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A sealant or coating admixture comprised of (a) a blocked isocyanate-terminated polymer in which essentially all NCO groups are blocked, (b) a multi-functional imine essentially free of amine functionality formed by the reaction between a primary multi-functional amine with a ketone or aldehyde, said multi-functional imine having the formula ##STR3## wherein R 1 , R 2 , R 3 , and R 4 are radicals each independently selected from the group consisting of hydrogen, an alkyl having from 1 to 10 carbon atoms and phenyl and wherein A is a radical having a molecular weight from 26 to 7000, and (c) from 0.1 to 10 parts by weight of an organosilane based upon 100 parts by weight of said blocked isocyanate-terminated polymer, said organosilane being selected from the group consisting of aminosilanes, the reaction product of a mercaptosilane with a monoepoxide, the reaction product of an epoxysilane with a secondary amine, and the reaction product of an aminosilane with an acrylic monomer.
Claim 2
Dependent Claim
162 words
A sealant or coating admixture comprised of (a) a blocked isocyanate-terminated polymer in which essentially all NCO groups are blocked, (b) a multi-functional imine essentially free of amine functionality formed by the reaction between a primary multi-functional amine with a ketone or aldehyde, said multi-functional imine having the formula ##STR3## wherein R 1 , R 2 , R 3 , and R 4 are radicals each independently selected from the group consisting of hydrogen, an alkyl having from 1 to 10 carbon atoms and phenyl and wherein A is a radical having a molecular weight from 26 to 7000, and (c) from 0.1 to 10 parts by weight of an organosilane based upon 100 parts by weight of said blocked isocyanate-terminated polymer, said organosilane being selected from the group consisting of aminosilanes, the reaction product of a mercaptosilane with a monoepoxide, the reaction product of an epoxysilane with a secondary amine, and the reaction product of an aminosilane with an acrylic monomer.
Claim 3
Dependent Claim
77 words
The admixture of claim 1 wherein said blocked isocyanate-terminated polymer is the reaction product formed by reacting a hydroxy-terminated polymeric material having an average molecular weight of from 1,000 to 18,000 with a diisocyanate or triisocyanate to form an isocyanate-terminated prepolymer and thereafter reacting said isocyanate-terminated prepolymer with a blocking agent selected from the group consisting of phenol, 3-methoxyphenol, 4-methoxyphenol, nonylphenol, meta-cresol, para-cresol, 4-chlorophenol, meta-hydroxybenzaldehyde, ortho-hydroxybenzaldehyde, para-hydroxybenzaldehyde, hydroquinone, 1-hydroxy-2-propanone, 3-hydroxy-acetophenone, 4-hydroxyaceto-phenone, ethyl acetyl acetate and cyclohexanone oxime.
Claim 4
Dependent Claim
11 words
The admixture of claim 2 wherein said blocking agent is nonylphenol.
Claim 5
Dependent Claim
29 words
The admixture of claim 1 wherein said admixture contains from 10 to 70 parts by weight of a filler per 100 parts by weight of said blocked isocyanate-terminated polymer.
Claim 6
Dependent Claim
24 words
The admixture of claim 1 wherein said admixture contains from 1 to 40 parts by weight of a solvent for said blocked isocyanate-terminated polymer.
Claim 7
Dependent Claim
25 words
The admixture of claim 1 wherein said multi-functional imine is a ketimine formed by the reaction of a primary diamine or triamine with a ketone.
Claim 8
Dependent Claim
17 words
The admixture of claim 1 wherein said isocyanate is a mixture of 2,4-tolylene diisocyanate and 2,6-tolylene diisocyanate.
Claim 9
Dependent Claim
16 words
The admixture of claim 1 wherein said blocked isocyanate-terminated polymer is a blocked isocyanate-terminated polyurethane polymer.
Claim 10
Dependent Claim
14 words
The admixture of claim 2 wherein said hydroxy-terminated polymer is a hydroxy-terminated polyether triol.
References Cited (Backward Citations)
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US3267078A
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US3627722A
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US4067844A
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US4374237A
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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) | 1988-03-25 | 1988-09-24 | 1989-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-25 | 1992-09-24 | 1993-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-25 | 1996-09-24 | 1997-03-26 | $7700.00 | Window Closed / Lapsed |