US4491650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylic resin having pendant silane groups thereon, and methods of making and using the same
Assignee: Essex Specialty Products LLC
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Filing: 1982-05-05
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Granted: 1985-01-01
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Expires: 2002-05-05
Abstract
Abstract What are disclosed are a poly(meth)acrylate polymer having pendant hydrolyzable alkoxysilane groups thereon prepared by reacting a poly(meth)acrylate polymer having pendant hydroxy groups thereon with an isocyanato functional alkoxysilane having 1 to 3 hydrolyzable lower alkoxy groups present on the silicon atom thereof; a substrate such as glass or aluminum having a tenacious coating thereon of such a polymer alone or in admixture with another, different, resinous binder component; such a substrate further having a resinous sealant composition applied over said tenacious coating as a primer; and methods for making such a polymer and such coated substrates.
Inventors
- 👤 Sidky D. Rizk
- 👤 Harry W. S. Hsieh
- 👤 Michael P. Mazzeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:15
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/71; C08G18/718; C08F; C08F8/00; C08F8/42; C08G18/28; C08G18/40; C08G18/62; C08G18/6216; C08G18/622; C08G18/6225; C08G18/6229
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
A poly(meth)acrylate polymer having a weight average molecular weight from about 1000 to about 100,000 and having pendant hydrolyzable alkoxysilane groups attached to a poly(meth)acrylate backbone by urethane linkages, prepared by reacting at least 75 equivalent percent of the hydroxy groups of a poly(meth)acrylate polymer having from 3 to 100 pendant hydroxy groups per molecule with the isocyanate group of an isocyanato functional alkoxysilane of the formula OCN--R.sup.3 --SiX.sub.n R.sup.4 (3-n), wherein X is lower alkoxy, R 4 is hydrogen or lower alkyl, n is an integer from 1 to 3, and R 3 is a divalent aliphatic, aromatic, or araliphatic organic radical, said poly(meth)acrylate polymer being a copolymer formed from a monomer mixture consisting of one or more hydroxyalkyl acrylates or methacrylates having an alkylene group containing from 2 to 6 carbon atoms and one or more alkyl acrylates or methacrylates having 1 to 8 carbon atoms in the alkyl group.
Claim 2
Dependent Claim
152 words
A poly(meth)acrylate polymer having a weight average molecular weight from about 1000 to about 100,000 and having pendant hydrolyzable alkoxysilane groups attached to a poly(meth)acrylate backbone by urethane linkages, prepared by reacting at least 75 equivalent percent of the hydroxy groups of a poly(meth)acrylate polymer having from 3 to 100 pendant hydroxy groups per molecule with the isocyanate group of an isocyanato functional alkoxysilane of the formula OCN--R.sup.3 --SiX.sub.n R.sup.4 (3-n), wherein X is lower alkoxy, R 4 is hydrogen or lower alkyl, n is an integer from 1 to 3, and R 3 is a divalent aliphatic, aromatic, or araliphatic organic radical, said poly(meth)acrylate polymer being a copolymer formed from a monomer mixture consisting of one or more hydroxyalkyl acrylates or methacrylates having an alkylene group containing from 2 to 6 carbon atoms and one or more alkyl acrylates or methacrylates having 1 to 8 carbon atoms in the alkyl group.
Claim 3
Dependent Claim
17 words
A poly(meth)acrylate polymer as in claim 1 having a weight average molecular weight from 20,000 to 60,000.
Claim 4
Dependent Claim
14 words
A polymer as in claim 1 wherein said alkoxysilane is an isocyanatoalkyl tri(lower alkoxy)silane.
Claim 5
Dependent Claim
13 words
A polymer as in claim 1 wherein said alkoxysilane is gamma isocyanatopropyl triethoxysilane.
Claim 6
Dependent Claim
13 words
A polymer as in claim 1 wherein said alkoxysilane is gamma isocyanatopropyl trimethoxysilane.
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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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |