US4430486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Film-forming urethane resins containing alkoxy silane groups and acrylyl groups
Assignee: PPG Industries Ohio Inc
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Filing: 1982-11-29
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Granted: 1984-02-07
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Expires: 2002-11-29
Abstract
Abstract Ungelled reaction products of a urethane resin having acrylyl groups with an amino silane are formed. The products are capable of curing at a low temperature to form durable coatings. Polyols can optionally be blended with the ungelled reaction products to provide useful coating compositions.
Inventors
- 👤 Wen-Hsuan Chang
- 👤 Robert Piccirilli
- 👤 Walter F. Kasper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/83; C08G18/837; C08F; C08F299/00; C08F299/02; C08F299/06; C08F299/065
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
155 words
An ungelled reaction product characterized in having an acrylyl content of from about 0.2 to about 2 meq. per gram is derived from the reaction of: (a) a urethane resin having an average of greater than 1 amine reactive acrylyl residue per molecule and a free isocyanate content of up to about 15 percent; and (b) an amino silane of formula ##STR11## where X is independently (1) hydrogen, (2) an alkyl, aryl, or cycloalkyl group having from 1 to 10 carbon atoms, or (3) ##STR12## where R' is independently an alkylene group having from 2 to 10 carbon atoms, m is from 0 to 2, R" is independently a hydrogen, alkyl, aryl, cycloalkyl, alkoxy, or aryloxy group having from 1 to 8 carbon atoms, n is from 1 to 5 and R'" is an alkyl group having from 1 to 8 carbon atoms, with the proviso at least one X is a radical containing silicon.
Claim 2
Dependent Claim
155 words
An ungelled reaction product characterized in having an acrylyl content of from about 0.2 to about 2 meq. per gram is derived from the reaction of: (a) a urethane resin having an average of greater than 1 amine reactive acrylyl residue per molecule and a free isocyanate content of up to about 15 percent; and (b) an amino silane of formula ##STR11## where X is independently (1) hydrogen, (2) an alkyl, aryl, or cycloalkyl group having from 1 to 10 carbon atoms, or (3) ##STR12## where R' is independently an alkylene group having from 2 to 10 carbon atoms, m is from 0 to 2, R" is independently a hydrogen, alkyl, aryl, cycloalkyl, alkoxy, or aryloxy group having from 1 to 8 carbon atoms, n is from 1 to 5 and R'" is an alkyl group having from 1 to 8 carbon atoms, with the proviso at least one X is a radical containing silicon.
Claim 3
Dependent Claim
23 words
The reaction product of claim 1 wherein the product has an acrylyl content of from about 0.2 to about 1.0 meq. per gram.
Claim 4
Dependent Claim
23 words
The reaction product of claim 2 wherein the reaction product has a silicon content of from about 0.5 percent to about 12 percent.
Claim 5
Dependent Claim
36 words
The reaction product of claim 3 where the product has an acrylyl content of from about 0.2 to about 0.8 meq. per gram and a silicon content of from about 1 percent to about 5 percent.
Claim 6
Dependent Claim
24 words
The reaction product of claim 4 wherein the urethane resin has an average of greater than about 1.2 amine reactive acrylyl residues per molecule.
Claim 7
Dependent Claim
24 words
The reaction product of claim 5 wherein the urethane resin has an average of greater than about 1.5 amine reactive acrylyl residues per molecule.
Claim 8
Dependent Claim
24 words
The reaction product of claim 5 wherein the urethane resin has a free isocyanate content of from about 0.5 percent to about 15 percent.
Claim 9
Dependent Claim
24 words
The reaction product of claim 7 wherein the urethane resin has a free isocyanate content of from about 0.5 percent to about 5 percent.
Claim 10
Dependent Claim
25 words
The reaction product of claim 8 wherein the urethane resin is derived from the reaction of a diisocyanate, hydroxyalkyl acrylate or methacrylate and a lactone.
Claim 11
Dependent Claim
21 words
The reaction product of claim 7 wherein the amino silane has the formula ##STR13## where p is from 0 to 2.
Claim 12
Dependent Claim
10 words
The reaction product of claim 10 wherein p is 0.
Claim 13
Dependent Claim
31 words
The reaction product of claim 11 wherein the amino silane has as R' an alkylene linkage of from 2 to 5 carbon atoms and R'" is a methyl or ethyl group.
Claim 14
Dependent Claim
17 words
The reaction product of claim 12 wherein the amino silane is gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, or a mixture thereof.
Claim 15
Dependent Claim
22 words
The reaction product of claim 1 further characterized in being capable of curing at a temperature of less than about 150° C.
Claim 16
Dependent Claim
30 words
A coating composition consisting essentially of (a) from about 30 percent to about 95 percent of the reaction product of claim 1, and (b) the balance an inert organic solvent.
Claim 17
Dependent Claim
15 words
The coating composition of claim 15 additionally consisting essentially of a polyol as a reactant.
Claim 18
Dependent Claim
43 words
The coating composition of claim 16 wherein the product of claim 1 represents, on a film-forming solids basis, from about 10 percent to about 90 percent of the composition and the polyol from about 10 percent to about 90 percent of the composition.
Claim 19
Dependent Claim
21 words
The coating composition of claim 15 further characterized in being capable of curing at a temperature less than about 150° C.
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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) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |