US4680232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion and UV resistant coating compositions
Assignee: General Electric Co
•
Filing: 1986-01-02
•
Granted: 1987-07-14
•
Expires: 2006-01-02
Abstract
Abstract Abrasion resistant coating compositions with improved weatherability are described which comprise water/alcohol solutions of a partial condensate and a colloidal dispersion of colloidal silica and colloidal metal. Improved weatherability is provided by a silylated ultraviolet light absorbing agent which is incorporated in the coating.
Inventors
- 👤 Arnold Factor
- 👤 Gautam A. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:56
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663; Y10T428/31667
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
151 words
A UV stabilized coating composition comprising a water/aliphatic alcohol solids dispersion of a partial condensate derived from organotrialkoxysilane and containing at least about 30 weight percent methyltrisilanol, and a colloidal dispersion of colloidal silica and a colloidal metal, colloidal metal alloy or colloidal metal salt, said metal being selected from the group consisting of antimony, aluminum, gold, silver, copper, tin, cadmium and indium, said dispersion comprising about 5 to 70 weight of the solid portion of the coating composition, and an effective amount of a silylated ultraviolet light absorbing agent capable of co-reacting with the organotrialkoxysilane and having the formula ##STR6## wherein X is ##STR7## Y is H or OH; Z is H, OH, OQ or OW, where at least one Z in the ortho position is OH if Y is H; Q is --CH 2 (CH 2 ) n Si(R") x (OR"') y and W is --C m H 2m+1
Claim 2
Dependent Claim
151 words
A UV stabilized coating composition comprising a water/aliphatic alcohol solids dispersion of a partial condensate derived from organotrialkoxysilane and containing at least about 30 weight percent methyltrisilanol, and a colloidal dispersion of colloidal silica and a colloidal metal, colloidal metal alloy or colloidal metal salt, said metal being selected from the group consisting of antimony, aluminum, gold, silver, copper, tin, cadmium and indium, said dispersion comprising about 5 to 70 weight of the solid portion of the coating composition, and an effective amount of a silylated ultraviolet light absorbing agent capable of co-reacting with the organotrialkoxysilane and having the formula ##STR6## wherein X is ##STR7## Y is H or OH; Z is H, OH, OQ or OW, where at least one Z in the ortho position is OH if Y is H; Q is --CH 2 (CH 2 ) n Si(R") x (OR"') y and W is --C m H 2m+1
Claim 3
Dependent Claim
50 words
where x is 0, 1 or 2, y is 1, 2 or 3, x+y=3, n=0, 1 or 2, m=1 to 18, R" is alkyl having 1 to 6 carbon atoms and each R"' is independently selected from the group consisting of alkyl or alkanoyl having 1 to 6 carbon atoms.
Claim 4
Dependent Claim
50 words
where x is 0, 1 or 2, y is 1, 2 or 3, x+y=3, n=0, 1 or 2, m=1 to 18, R" is alkyl having 1 to 6 carbon atoms and each R"' is independently selected from the group consisting of alkyl or alkanoyl having 1 to 6 carbon atoms.
Claim 5
Dependent Claim
21 words
A coating composition as in claim 1 wherein the colloidal dispersion contains up to 30 weight percent of colloidal antimony oxide.
Claim 6
Dependent Claim
73 words
A coating composition as in claim 2 wherein the organotrialkoxysilane is of the formula R.sup.1 Si(OR).sub.3 wherein R 1 is selected from the group consisting of alkyl radicals of from 1 to 3 carbon atoms and aryl radicals of from 6 to 13 carbon atoms and R is selected from the group consisting of alkyl radicals of from 1 to 8 carbon atoms and aryl radicals of from 6 to 20 carbon atoms.
Claim 7
Dependent Claim
30 words
A coating composition as in claim 3 wherein the partial condensate is derived from about 30 to 100% CH 3 Si(OR) 3 wherein R is as defined in claim 3.
Claim 8
Dependent Claim
16 words
A coating composition as in claim 3 wherein the partial condensate is derived from methyl trimethoxysilane.
Claim 9
Dependent Claim
23 words
A coating composition as in claim 2 wherein the coating composition contains sufficient acid to provide a pH of from 3 to 6.
Claim 10
Dependent Claim
17 words
A coating composition as in claim 2 wherein the coating composition contains from 10 to 50% solids.
Claim 11
Dependent Claim
29 words
A coating composition as in claim 1 wherein the silylated ultraviolet light absorbing agent is of the formula ##STR8## wherein the Q radicals are as defined in claim 1.
Claim 12
Dependent Claim
49 words
A coating composition as in claim 8 wherein Q is selected from the group of formulas consisting of --CH.sub.2 SiCH.sub.3 (OCH.sub.3).sub.2 ; --CH.sub.2 (CH.sub.2).sub.2 Si(OCH.sub.3).sub.3 ; --CH.sub.2 (CH.sub.2).sub.2 SiCH.sub.3 (OCH.sub.3).sub.2 ; --CH.sub.2 (CH.sub.2).sub.2 Si(CH.sub.3).sub.2 OCH.sub.3 ; --CH.sub.2 (CH.sub.2).sub.2 Si(OCH.sub.3)(OCH.sub.2 CH.sub.3); --CH.sub.2 (CH.sub.2).sub.2 Si(OCH.sub.3)(OCH.sub.2 CH.sub.3).sub.2 and --CH.sub.2 (CH.sub.2).sub.2 Si(OCH.sub.2 CH.sub.3).sub.3.
Claim 13
Dependent Claim
36 words
A coating composition as in claim 1 wherein the silylated ultraviolet light absorbing agent is selected from the group consisting of 4-[gamma-(trimethoxysilyl)propoxy]-2-hydroxy-benzophenone and 4-[gamma-(tri(methoxy/ethoxy)silyl)propoxy]-2-hydroxy benzophenone wherein the methoxy to ethoxy ratio is from 4:1 to 6:1.
Claim 14
Dependent Claim
28 words
A coating composition as in claim 1 which comprises from 5 to 20 parts by weight silylated ultraviolet light absorbing compound to 100 parts by weight of solids.
Claim 15
Dependent Claim
16 words
A solid substrate having at least one surface coating with a cured composition of claim 1.
Claim 16
Dependent Claim
10 words
A solid substrate as in claim 12 which comprises polycarbonate.
Claim 17
Dependent Claim
25 words
A solid substrate as in claim 13 wherein a primer layer comprised of an acrylic resin is disposed between said solid substrate and the coating.
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) | 1990-07-13 | 1991-01-12 | 1991-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-13 | 1995-01-12 | 1995-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-13 | 1999-01-12 | 1999-07-14 | $7700.00 | Window Closed / Lapsed |