Process for producing composite laminate comprising insert part and injection-molded part
US4957677A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1988 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Sep 14, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/14311
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing a composite laminate comprising a insert part and an injection-molded resin part by coating the insert part with a primer comprising a copolymer aqueous emulsion having a glass transition point of not higher than 20.degree. C. which is obtained by emulsion polymerization of a monomer mixture consisting mainly of (a) from 35 to 75% by weight of an alkyl acrylate having from 1 to 8 carbon atoms in the alkyl moiety thereof, (b) from 10 to 50% by weight of an alkyl methacrylate having from 1 to 4 carbon atoms in the alkyl moiety thereof, (c) up to 15% by weight of styrene and/or acrylonitrile, the sum of the (b) and (c) components ranging from 15 to 55% by weight, (d) up to 5% by weight of a vinyl monomer selected from the group consisting of an .alpha.,.beta.-unsaturated acid or an anhydride thereof, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, (meth)acrylamide, and methylol(meth)acrylamide, and (e) up to 30% by weight of other vinyl monomer(s), drying the primer, inserting the insert part into a cavity of an injection mold, injecting a molten resin into the cavity to thereby unite the insert part and the injected resin molded part into one bo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.