Plastisol compositions
US5137952A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 1991 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Sep 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F299/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Free radical-curable compositions comprising a plastisol component and a copolymer containing free anhydride functionality and, optionally, other reactive diluents are provided. In particular, curable compositions employing a plastisol, preferably a polyvinyl chloride-containing plastisol, and a low molecular weight crosslinking copolymer component having free anhydride functionality and which is a partial esterification product of a terminally ethylenically unsaturated compound and a polymerizable maleic anhydride are provided. The compositions of the invention yield improved adhesives, sealants, coatings, and insulators for a wide variety of substrates and may be employed in a variety of coatings and castings. Processes for preparing cured plastisol compositions from the disclosed free radical-curable compositions are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.