Water-borne coating compositions comprising half esters of anhydride polymers crosslinked by epoxies
US5376704A · kind A · utility
13Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Nov 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous coating composition useful for a finish for automobiles and trucks in which the film forming binder comprises a neutralized half-ester product of an acrylic polymer having at least two reactive anhydride groups and an epoxy-containing, optionally silane-containing crosslinker. The composition may be used as a multi-package system. The composition is characterized by improved environmental resistance and excellent clarity and appearance, particularly for clearcoats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.