US4414349A
Expired / Lapsed
US
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Silicone resin coating composition adapted for primerless adhesion to plastic substrates and process for making same
Assignee: General Electric Co
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Filing: 1982-01-15
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Granted: 1983-11-08
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Expires: 2002-01-15
Abstract
Abstract This invention relates to coating compositions prepared by prehydrolyzing the silane function of a silylated ultraviolet radiation screening compound and adding it to an aqueous silicone resin composition. Hydrolyzing the silane function renders the ultraviolet screen a silanol which is a compatible component in the silicone resin compositions contemplated.
Inventors
- 👤 Howard A. Vaughn, Jr.
- 👤 Ta-Yen Ching
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:08
CPC Classifications
C; C09; C09D; C09D183/00; C09D183/04
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
62 words
A coating composition adapted for adhesion to plastic substrates without a primer, said composition being prepared by: (i) prehydrolyzing a silylated ultraviolet radiation screening compound by reaction with a mixture comprising alcohol, water, and a small amount of an agent to catalyze hydrolysis; and thereafter (ii) adding the silanol-functional reaction product to an aqueous partially condensed silicone resin composition containing colloidal silica.
Claim 2
Dependent Claim
62 words
A coating composition adapted for adhesion to plastic substrates without a primer, said composition being prepared by: (i) prehydrolyzing a silylated ultraviolet radiation screening compound by reaction with a mixture comprising alcohol, water, and a small amount of an agent to catalyze hydrolysis; and thereafter (ii) adding the silanol-functional reaction product to an aqueous partially condensed silicone resin composition containing colloidal silica.
Claim 3
Dependent Claim
21 words
The coating composition prepared according to claim 1, wherein the alcohol is selected from a group consisting of isopropanol and isobutanol.
Claim 4
Dependent Claim
13 words
The coating composition prepared according to claim 2, wherein the alcohol is isopropanol.
Claim 5
Dependent Claim
13 words
The coating composition prepared according to claim 2, wherein the alcohol is isobutanol.
Claim 6
Dependent Claim
17 words
The coating composition prepared according to claim 1, wherein said agent to catalyze hydrolysis is an acid.
Claim 7
Dependent Claim
14 words
The coating composition prepared according to claim 5, wherein said acid is acetic acid.
Claim 8
Dependent Claim
17 words
The coating composition prepared according to claim 1, wherein the silylated ultraviolet radiation screening compound is 4-(3-triethoxysilylpropoxy)-2-hydroxybenzophenone.
Claim 9
Dependent Claim
18 words
The coating composition prepared according to claim 1, wherein said mixture in step (i) has an acidic pH.
Claim 10
Dependent Claim
97 words
A composition prepared according to claim 1, wherein the silicone resin composition of step (ii) is a dispersion of colloidal silica in an aqueous-organic solution of a silanol of the formula RSi(OH) 3 , wherein R is selected from a group consisting of alkyl having 1 to 3 carbon atoms and aryl, wherein at least 70 weight percent of the silanol is CH 3 Si(OH) 3 , said resin containing 10 to 50 weight percent solids, said solids consisting of 10 to 70 weight percent colloidal silica and 30 to 90 weight percent of the partial condensate.
Claim 11
Dependent Claim
23 words
The composition prepared according to claim 9, wherein the pH of the silicone resin composition is in the range of 7.1 to 7.8.
Claim 12
Dependent Claim
80 words
The coating composition prepared according to claim 1, wherein said silylated ultraviolet radiation screening compound has the formula: ##STR4## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3 inclusive.
Claim 13
Dependent Claim
13 words
The coating composition prepared according to claim 11, wherein R 3 is hydroxy.
Claim 14
Dependent Claim
13 words
The coating composition prepared according to claim 11, wherein R 3 is hydrogen.
Claim 15
Dependent Claim
13 words
The coating composition prepared according to claim 13, wherein R 4 is hydroxy.
Claim 16
Dependent Claim
63 words
A process for preparing a coating composition adapted for adhesion to plastic substrates without a primer, which comprises: (i) prehydrolyzing a silylated ultraviolet radiation screening compound by reaction with a mixture comprising alcohol, water, and a small amount of an agent to catalyze hydrolysis; and thereafter (ii) adding the silanol-functional reaction product to an aqueous partially condensed silicone resin composition containing colloidal silica.
Claim 17
Dependent Claim
63 words
A process for preparing a coating composition adapted for adhesion to plastic substrates without a primer, which comprises: (i) prehydrolyzing a silylated ultraviolet radiation screening compound by reaction with a mixture comprising alcohol, water, and a small amount of an agent to catalyze hydrolysis; and thereafter (ii) adding the silanol-functional reaction product to an aqueous partially condensed silicone resin composition containing colloidal silica.
Claim 18
Dependent Claim
18 words
The process of claim 15, wherein the alcohol is selected from a group consisting of isopropanol and isobutanol.
Claim 19
Dependent Claim
10 words
The process of claim 16, wherein the alcohol is isopropanol.
Claim 20
Dependent Claim
10 words
The process of claim 16, wherein the alcohol is isobutanol.
Claim 21
Dependent Claim
14 words
The process of claim 15, wherein said agent to catalyze hydrolysis is an acid.
Claim 22
Dependent Claim
11 words
The process of claim 19, wherein said acid is acetic acid.
Claim 23
Dependent Claim
14 words
The process of claim 15, wherein the silylated ultraviolet radiation screening compound is 4-(3-triethoxysilylpropoxy)-2-hydroxybenzophenone.
Claim 24
Dependent Claim
15 words
The process of claim 15, wherein said mixture in step (i) has an acidic pH.
Claim 25
Dependent Claim
95 words
The process of claim 15, wherein the silicone resin composition of step (ii) is a dispersion of colloidal silica in an aqueous-organic solution of a silanol of the formula RSi(OH) 3 , wherein R is selected from a group consisting of alkyl having 1 to 3 carbon atoms and aryl, wherein at least 70 weight percent of the silanol is CH 3 Si(OH) 3 , said resin containing 10 to 50 weight percent solids, said solids consisting of 10 to 70 weight percent colloidal silica and 30 to 90 weight percent of the partial condensate.
Claim 26
Dependent Claim
21 words
The process of claim 23, wherein the pH of the silicone resin composition is in the range of 7.1 to 7.8.
Claim 27
Dependent Claim
77 words
The process of claim 15, wherein said silylated ultraviolet radiation screening compound has the formula: ##STR5## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3 inclusive.
Claim 28
Dependent Claim
10 words
The process of claim 25, wherein R 3 is hydroxy.
Claim 29
Dependent Claim
10 words
The process of claim 25, wherein R 3 is hydrogen.
Claim 30
Dependent Claim
10 words
The process of claim 27, wherein R 4 is hydroxy.
Claim 31
Dependent Claim
19 words
An unprimed plastic substrate coated on at least one surface with a coating composition as defined in claim 1.
Claim 32
Dependent Claim
16 words
A plastic substrate as defined in claim 29, wherein said plastic substrate is composed of polycarbonate.
Claim 33
Dependent Claim
115 words
A coating composition adapted for adhesion to plastic substrates without a primer and without prior aging, said coating composition comprising an aqueous partially condensed silicone resin composition containing colloidal silica and copolymerized with a small amount, effective to prevent discoloration, of a soluble prehydrolyzed silanol-functional silylated ultraviolet radiation screening compound having the formula: ##STR6## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3, inclusive.
Claim 34
Dependent Claim
115 words
A coating composition adapted for adhesion to plastic substrates without a primer and without prior aging, said coating composition comprising an aqueous partially condensed silicone resin composition containing colloidal silica and copolymerized with a small amount, effective to prevent discoloration, of a soluble prehydrolyzed silanol-functional silylated ultraviolet radiation screening compound having the formula: ##STR6## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3, inclusive.
Claim 35
Dependent Claim
122 words
An unprimed plastic substrate coated on at least one surface with a mar-resistant, optically clear composition adapted for use without prior aging comprising an aqueous partially condensed silicone resin composition containing colloidal silica, said silicone resin composition being copolymerized with a small amount, effective to prevent discoloration, of a soluble prehydrolyzed silanol-functional silylated ultraviolet radiation screening compound having the formula: ##STR7## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3, inclusive.
Claim 36
Dependent Claim
122 words
An unprimed plastic substrate coated on at least one surface with a mar-resistant, optically clear composition adapted for use without prior aging comprising an aqueous partially condensed silicone resin composition containing colloidal silica, said silicone resin composition being copolymerized with a small amount, effective to prevent discoloration, of a soluble prehydrolyzed silanol-functional silylated ultraviolet radiation screening compound having the formula: ##STR7## wherein R 1 is hydrogen, C 1 -C 8 alkyl or halogen; R 3 and R 4 are hydrogen, C 1 -C 8 alkoxy, carboxy, halogen, hydroxy, amino, carbethoxy or --Q--(CH 2 ) 3 Si(OR 2 ) 3 ; Q is --NH-- or --O--; R 2 is C 1 -C 8 alkyl; and a is an integer equal to 1-3, inclusive.
Claim 37
Dependent Claim
11 words
The coating composition of claim 31, wherein R 3 is OH.
Claim 38
Dependent Claim
11 words
The coating composition of claim 31, wherein R 3 is H.
Claim 39
Dependent Claim
11 words
The coating composition of claim 34, wherein R 4 is OH.
Claim 40
Dependent Claim
15 words
The coating composition of claim 31, wherein said silylated ultraviolet radiation screening compound is 4-(3-triethoxysilylpropoxy)-2-hydroxybenzophenone.
Claim 41
Dependent Claim
13 words
A coated substrate as defined in claim 32, wherein R 3 is OH.
Claim 42
Dependent Claim
13 words
A coated substrate as defined in claim 32, wherein R 3 is H.
Claim 43
Dependent Claim
13 words
A coated substrate as defined in claim 38, wherein R 4 is OH.
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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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |