Acid or anhydride grafted chlorinated polyolefin reacted with monoalcohol and polyepoxide
US4997882A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Jul 7, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2451/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is an ungelled, modified chlorinated polyolefin resin suitable for providing a highly adherent, solvent resistant film on a thermoplastic polyolefin substrate. The modified chlorinated polyolefin resin is prepared by grafting an unsaturated polycarboxylic acid and/or an unsaturated acid anhydride onto a chlorinated polyolefin resin to form an acid- and/or anhydride-modified chlorinated polyolefin resin. The resulting acid- and/or anhydride-modified chlorinated polyolefin resin is reacted with an organic monohydric alcohol to form an esterified product containing acid functionality. The resulting esterified product is reacted with a polyepoxide to form the ungelled modified chlorinated polyolefin resin. Also disclosed is a method of preparing an ungelled modified chlorinated polyolefin resin of the invention, a coating composition containing a resin of the invention, and a method of forming a hardened film from the coating composition on a thermoplastic polyolefin substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.