Photochromic paint
US4444939A · kind A · utility
7Cited by
0References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1983 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Mar 2, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/252
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Photochromic paint comprising a latex of an acrylate and/or a methacrylate polymer, the polymer particles of which constitutes 30 to 50% by weight of the latex and which has been prepared using a copolymerizable surfactant, there being dispersed in the latex photochromic glass beads of from 0.05 to 1.00 .mu.m in size and which comprises from 10 to 30% by weight of the latex, the total solids content of the latex being from 40 to 60% by weight. The paint may be coated on to any surface which will accept a water-based paint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.