Reclaimable polyester film having adhesion-promoting coating
US4942088A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1987 |
| Grant date | Jul 17, 1990 |
| Priority date | — |
| Expiry date | Oct 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A reclaimable polyester film is disclosed which comprises an oriented polyester film which has been coated with an adhesion-promoting coating. The coating is applied to the film as an aqueous dispersion and is dried and crosslinked by the application of heat. The coating is prepared by the free-radical emulsion polymerizable of the following components: PA0 (A) 1 to 99% by weight of a polymer having carboxy and epoxy groups in the form of an aqueous system with, PA0 (B) 1 to 99% by weight of at least one copolymerizable .alpha.-.beta.-olefinic unsaturated monomer, each with reference to the total solids content of the components, and PA0 (c) 0.01 to 10% by weight of at least one polymerization initiator, based upon the monomer proportion of the components (B), and PA0 (D) 0 to 20% by weight of anionic or nonionic emulsifiers or a mixture of both, or also of protective colloids, with reference to the proportion of component (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.