Process for the preparation of shaped articles based on acrylic polymers coated with an antiscratch and antiabrasion film
US5569498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Oct 29, 1996 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2433/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention refers to a process to render antiscratch and antiabrasion shaped articles based on thermoplastic acrylic polymers consisting in coating the article by a composition comprising PA0 (A) 55-95% by weight of at least a (meth)acrylic monomer and/or oligomer having at least two double bonds; PA0 (B) 5-25% by weight of monomers and/or oligomers of divinylethers and/or epoxides PA0 (C) 0-20% by weight of monomers and/or oligomers containing polar groups of monofunctional (meth)acrylaytes and/or monovinylethers, when (A) or (B) do not contain polar groups, and comprising a mixed system of photoinitiators of radical and cationic type, then in submitting the coated article to U.V. irradiation, at temperatures of 30.degree.-70.degree. C. to polymerize and crosslink the coating in situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.