US4235954A
Expired / Lapsed
US
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Polycarbonate article coated with an adherent, durable organopolysiloxane coating and process for producing same
Assignee: General Electric Co
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Filing: 1979-05-24
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Granted: 1980-11-25
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Expires: 1999-05-24
Abstract
Abstract A coated polycarbonate article comprising a polycarbonate substrate having (i) a primer layer comprising a UV cured reaction product of a polyfunctional acrylic ester monomer and an organic silicon compound of the formula R 3 c SiX.sub.(4-c) wherein R 3 is an organic moiety containing olefinic unsaturation, X is an alkoxy, acyloxy and aryloxy group, and c is an integer of from 1 to 3; and (ii) a thermoset organopolysiloxane coating on said UV cured primer layer. A process for producing a coated polycarbonate article comprising (i) priming a polycarbonate substrate with a UV curable primer composition containing (a) a polyfunctional acrylic ester monomer, (b) an organic silicon compound of the formula R 3 c SiX.sub.(4-c), wherein R, X and c are as defined above; and (c) a UV photo initiator; (ii) UV curing said primer composition; (iii) applying an organopolysiloxane coating composition to the primed substrate; and (iv) curing the organopolysiloxane.
Inventors
- 👤 James S. Humphrey, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:34
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/16; C08J7/18; B; B29; B29D; B29D11/00; B29D11/00865; C08J7/04; C08J7/042; C08J7/043; C08J7/046; C09; C09D; C09D183/00; C09D183/04; C09D5/00; C09D5/002; C08J2369/00; C08J2433/00; C08J2433/04; C08J2433/06; C08J2483/00; C08J2483/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31652; Y10T428/31663; Y10T428/31667; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
102 words
A coated article having improved abrasion and chemical solvent resistance comprising a polycarbonate substrate coated with (i) an adhesion promoting primer layer comprised of the photoreaction products of (a) at least one polyfunctional acrylic acid ester monomer, and (b) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 represents a radical selected from ##STR37## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical; and (ii) a cured thermoset organopolysiloxane containing top coat on said primer layer.
Claim 2
Dependent Claim
102 words
A coated article having improved abrasion and chemical solvent resistance comprising a polycarbonate substrate coated with (i) an adhesion promoting primer layer comprised of the photoreaction products of (a) at least one polyfunctional acrylic acid ester monomer, and (b) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 represents a radical selected from ##STR37## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical; and (ii) a cured thermoset organopolysiloxane containing top coat on said primer layer.
Claim 3
Dependent Claim
97 words
The article of claim 1 wherein said polyfunctional acrylic acid ester monomer is represented by the formula ##STR38## wherein n is an integer from 2 to 4 inclusive, and R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent substituted saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent substituted olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent substituted ether radical, n valent polyether radical, n valent substituted polyether radical, n valent aromatic hydrocarbon radical, and n valent substituted aromatic hydrocarbon radical.
Claim 4
Dependent Claim
43 words
The article of claim 2 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent polyether radical, and n valent aromatic hydrocarbon radical.
Claim 5
Dependent Claim
31 words
The article of claim 3 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent ether radical, and n valent polyether radical.
Claim 6
Dependent Claim
25 words
The article of claim 1 wherein R 3 represents a radical having the formula ##STR39## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 7
Dependent Claim
25 words
The article of claim 1 wherein R 3 represents a radical having the formula ##STR40## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 8
Dependent Claim
25 words
The article of claim 1 wherein R 3 represents a radical having the formula ##STR41## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 9
Dependent Claim
15 words
The article of claim 5 wherein X is an alkoxy radical and c is 1.
Claim 10
Dependent Claim
13 words
The article of claim 8 wherein said alkoxy radical is an ethoxy radical.
Claim 11
Dependent Claim
13 words
The article of claim 8 wherein said alkoxy radical is a methoxy radical.
Claim 12
Dependent Claim
15 words
The article of claim 6 wherein X is an alkoxy radical and c is 1.
Claim 13
Dependent Claim
13 words
The article of claim 11 wherein said alkoxy radical is an ethoxy radical.
Claim 14
Dependent Claim
13 words
The article of claim 11 wherein said alkoxy radical is a methoxy radical.
Claim 15
Dependent Claim
15 words
The article of claim 7 wherein X is an alkoxy radical and c is 1.
Claim 16
Dependent Claim
13 words
The article of claim 14 wherein said alkoxy radical is an ethoxy radical.
Claim 17
Dependent Claim
13 words
The article of claim 14 wherein said alkoxy radical is a methoxy radical.
Claim 18
Dependent Claim
15 words
The article of claim 1 wherein said primer layer contains an ultraviolet light absorbing compound.
Claim 19
Dependent Claim
11 words
The article of claim 1 wherein said coated article is non-opaque.
Claim 20
Dependent Claim
16 words
The article of claim 17 wherein said coated article is in the form of a sheet.
Claim 21
Dependent Claim
86 words
An ultraviolet light curable primer composition for improving the adhesion of a thermoset organopolysiloxane containing top coat to a polycarbonate substrate comprising (i) at least one polyfunctional acrylic acid ester monomer; (ii) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 represents a radical selected from ##STR42## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical; and (iii) a photoinitiator.
Claim 22
Dependent Claim
86 words
An ultraviolet light curable primer composition for improving the adhesion of a thermoset organopolysiloxane containing top coat to a polycarbonate substrate comprising (i) at least one polyfunctional acrylic acid ester monomer; (ii) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 represents a radical selected from ##STR42## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical; and (iii) a photoinitiator.
Claim 23
Dependent Claim
97 words
The composition of claim 20 wherein said polyfunctional acrylic acid ester monomer is represented by the formula ##STR43## wherein n is an integer from 2 to 4 inclusive and R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent substituted saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent substituted olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent substituted ether radical, n valent polyether radical, n valent substituted polyether radical, n valent aromatic hydrocarbon radical, and n valent substituted aromatic hydrocarbon radical.
Claim 24
Dependent Claim
43 words
The composition of claim 21 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent polyether radical, and n valent aromatic hydrocarbon radical.
Claim 25
Dependent Claim
31 words
The composition of claim 22 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent ether radical, and n valent polyether radical.
Claim 26
Dependent Claim
15 words
The composition of claim 20 wherein X is an alkoxy radical and c is 1.
Claim 27
Dependent Claim
14 words
The composition of claim 24 wherein said alkoxy radical is a lower alkoxy radical.
Claim 28
Dependent Claim
12 words
The composition of claim 20 which further contains an ultraviolet light screener.
Claim 29
Dependent Claim
142 words
A process for providing a uniformly and tenaciously adhered abrasion and chemical solvent resistant organopolysiloxane coating onto a polycarbonate substrate which comprises: (i) applying onto said substrate a photocurable primer composition comprised of (a) at least one polyfunctional acrylic acid ester monomer, (b) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 is a radical represented by the formulae ##STR44## wherein Y is a hydrogen or methyl, and R 4 is a divalent saturated aliphatic hydrocarbon radical, and (c) a photoinitiator; (ii) curing said primer composition by means of ultraviolet radiation; (iii) applying a top coat composition comprised of a further-curable organopolysiloxane onto said cured primer layer; and, (iv) curing said further-curable organopolysiloxane to a thermoset condition.
Claim 30
Dependent Claim
142 words
A process for providing a uniformly and tenaciously adhered abrasion and chemical solvent resistant organopolysiloxane coating onto a polycarbonate substrate which comprises: (i) applying onto said substrate a photocurable primer composition comprised of (a) at least one polyfunctional acrylic acid ester monomer, (b) at least one organic silicon compound represented by the general formula R.sup.3.sub.c SiX.sub.(4-c) wherein c is an integer from 1 to 3 inclusive, X is an alkoxy, acyloxy, or aryloxy radical, and R 3 is a radical represented by the formulae ##STR44## wherein Y is a hydrogen or methyl, and R 4 is a divalent saturated aliphatic hydrocarbon radical, and (c) a photoinitiator; (ii) curing said primer composition by means of ultraviolet radiation; (iii) applying a top coat composition comprised of a further-curable organopolysiloxane onto said cured primer layer; and, (iv) curing said further-curable organopolysiloxane to a thermoset condition.
Claim 31
Dependent Claim
97 words
The process of claim 27 wherein said polyfunctional acrylic acid ester monomer is represented by the formula ##STR45## wherein n is an integer from 2 to 4 inclusive, and R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent substituted saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent substituted olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent substituted ether radical, n valent polyether radical, n valent substituted polyether radical, n valent aromatic hydrocarbon radical, and n valent substituted aromatic hydrocarbon radical.
Claim 32
Dependent Claim
43 words
The process of claim 28 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent olefinically unsaturated aliphatic hydrocarbon radical, n valent ether radical, n valent polyether radical, and n valent aromatic hydrocarbon radical.
Claim 33
Dependent Claim
31 words
The process of claim 29 wherein R 1 is selected from the group consisting of a n valent saturated aliphatic hydrocarbon radical, n valent ether radical, and n valent polyether radical.
Claim 34
Dependent Claim
27 words
The process of claim 28 wherein R 3 is a compound represented by the formula CH.sub.2 ═CH--COO--R.sup.4 wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 35
Dependent Claim
26 words
The process of claim 28 wherein R 3 is a compound represented by the formula ##STR46## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 36
Dependent Claim
26 words
The process of claim 28 wherein R 3 is a compound represented by the formula ##STR47## wherein R 4 is a divalent saturated aliphatic hydrocarbon radical.
Claim 37
Dependent Claim
15 words
The process of claim 31 wherein X is an alkoxy radical and c is 1.
Claim 38
Dependent Claim
15 words
The process of claim 32 wherein X is an alkoxy radical and c is 1.
Claim 39
Dependent Claim
15 words
The process of claim 33 wherein X is an alkoxy radical and c is 1.
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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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |