US4082891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polycarbonate coated with photocurable polythiol and different polyenes
Assignee: General Electric Co
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Filing: 1976-05-04
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Granted: 1978-04-04
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Expires: 1996-05-04
Abstract
Abstract A photocurable composition suitable for coatings comprising a polythiol and two different polyenes. These coating compositions are suitable for coating polycarbonate articles.
Inventors
- 👤 Herbert Leard Curry
- 👤 Walter Lawrence Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/04; C08G75/045; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/046; C08J2369/00; C08J2481/00; Y; Y10; Y10S; Y10S522/00; Y10S522/904; Y10S522/905; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31533; Y10T428/31551; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31924; Y10T428/31931
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A coated polycarbonate article having a coating thereon containing: (a) a polythiol represented by the general formula: ##STR16## wherein R 1 and R 2 are organic moieties containing no reactive carbon-to-carbon unsaturation and a is 2 to 4; (b) a polyene represented by the general formula: ##STR17## wherein R 3 and R 4 are organic moieties containing no reactive carbon-to-carbon unsaturation and b is 2 or greater; and (c) a polyene represented by the general formula: ##STR18## wherein R 6 and R 7 are organic moieties containing no reactive carbon-to-carbon unsaturation and c is 1 or greater, and wherein (a) and (b) plus (c) are used in stoichiometric amounts.
Claim 2
Dependent Claim
109 words
A coated polycarbonate article having a coating thereon containing: (a) a polythiol represented by the general formula: ##STR16## wherein R 1 and R 2 are organic moieties containing no reactive carbon-to-carbon unsaturation and a is 2 to 4; (b) a polyene represented by the general formula: ##STR17## wherein R 3 and R 4 are organic moieties containing no reactive carbon-to-carbon unsaturation and b is 2 or greater; and (c) a polyene represented by the general formula: ##STR18## wherein R 6 and R 7 are organic moieties containing no reactive carbon-to-carbon unsaturation and c is 1 or greater, and wherein (a) and (b) plus (c) are used in stoichiometric amounts.
Claim 3
Dependent Claim
13 words
The coated polycarbonate article of claim 1 in the form of a sheet.
Claim 4
Dependent Claim
41 words
The coated polycarbonate article of claim 1 wherein the polythiol of (a) is represented by the following formula: ##STR19## wherein R 1 and R 2 are straight chain aliphatic moieties containing no reactive carbon-to-carbon unsaturation and a is 2 to 4.
Claim 5
Dependent Claim
52 words
The coated polycarbonate article of claim 1 wherein the polyene of (b) is an oligomer of diallyl phthalate having residual unsaturation of the type represented by the general formula: ##STR20## wherein R 7 is an organic moiety derived from diallyl phthalate by oligomerization and b is an integer of 2 or greater.
Claim 6
Dependent Claim
18 words
The coated polycarbonate article of claim 1 wherein the polyene of (b) is represented by the formula: ##STR21##
Claim 7
Dependent Claim
32 words
The coated polycarbonate article of claim 1 wherein the polyene of (c) is represented by the formula: ##STR22## wherein R 6 and R 7 are organic moieties containing no reactive carbon-to-carbon unsaturation.
Claim 8
Dependent Claim
38 words
The coated polycarbonate article of claim 1 wherein the polyene of (c) is represented by the formula: ##STR23## wherein R 6 is an organic moiety containing no reactive carbon-to-carbon unsaturation and has a molecular weight of about 1000.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |