Light-stabilized polymer microparticles
US5274016A · kind A · utility
10Cited by
10References
5Claims
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Key dates
| Filing date | Aug 5, 1991 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Aug 5, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3475
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Light-stabilized polymer microparticles, which contain at least one light stabilizer, and processes for the preparation of these microparticles by polymerization of suitable monomers, at least a part of the polymerization being carried out in the presence of at least one light stabilizer, are described. The polymer microparticles can be used in coating compositions which comprise a disperse phase containing these particles and a liquid continuous phase. Coatings and finishes based on the compositions according to the invention are distinguished by improved weathering resistance, in particular by a high light stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.