Abrasion resistant polyester carbonates
US4191790A · kind A · utility
3Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Aug 8, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Bisphenol-A/terephthalate/carbonate copolymer substrate in direct adhesive contact with a coating layer of polymerized allyl diglycol carbonate, ("ADGC") without substantial penetration of the copolymeric substrate by the coating layer. The coated article is prepared by forming a layer of monomeric ADGC on the substrate, then polymerizing the ADGC by free-radical initiation at temperatures maintained below successively higher limits as the polymerization progresses, whereby to avoid substantial penetration of the substrate by ADGC or its polymers. The resulting article, such as a clear sheet or plate, is abrasion resistant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.