Patent US3619260A successfully refreshed from Google Patents.
US3619260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of bis-(acryloxyalkyl) carbonates
Assignee: PPG Industries Inc
•
Filing: 1969-06-02
•
Granted: 1971-11-09
•
Expires: 1989-06-02
Abstract
Abstract Phosgene is reacted with acrylates or methacrylates containing one hydroxyl group in the presence of an acid acceptor to form the novel bis-(acryloxyalkyl) carbonates of this invention. The product is highly radiation sensitive so that it may be polymerized by ionizing radiation and forms a coating which is hard and stain resistant.
Inventors
- 👤 Gordon M Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:22
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31678; Y10T428/31692; Y10T428/31699
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
23 words
The method of claim 1 Wherein the reaction product is subjected to a total dosage of from about 0.2 to about 20 megarads.
Claim 2
Dependent Claim
20 words
The method of claim 1 wherein a copolymerizable comonomer is mixed with the reaction product of phosgene and the acrylate.
Claim 3
Independent Claim
102 words
The method of coating a substrate comprising applying to the substrate the reaction product of phosgene and an acrylate having the formula: wherein R is selected from the group consisting of H and CH3 and R'' is selected from the group consisting of alkylene radicals, phenoxy substituted alkylene radicals, halogen substituted alkylene radicals, nitrile substituted alkylene radicals and nitro substituted alkylene radicals wherein the alkylene contains from about two to about 16 carbon atoms and wherein the reaction between the phosgene and acrylate has been carried out in the presence of an acid acceptor and subjecting the coated substrate to ionizing irradiation.
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |