Waterborne thermosetting compositions containing alternating copolymers of isobutylene type monomers
US6803413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2003 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Feb 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31511
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A curable, aqueous film-forming composition is provided, comprising:(a) a copolymer containing reactive functional groups and comprising at least 30 mol % of residues having alternating structural units:—[DM—AM]—wherein DM represents a residue from a donor monomer, and AM represents a residue from an acceptor monomer, at least 15 mol % of the copolymer comprising a donor monomer having the structure (I): wherein R1 is linear or branched C1 to C4 alkyl, R2 is selected from methyl, linear, cyclic or branched C1 to C20 alkyl, alkenyl, aryl, alkaryl and aralkyl; and(b) a curing agent having functional groups reactive with the reactive functional groups of (a).The invention is also directed to a multi-component composite coating composition including a base coat deposited from a pigmented film-forming composition and a transparent topcoat applied over the base coat. At least one coat is the film-forming composition described above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.