Coating compositions
US5990189A · kind A · utility
5Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1998 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Jan 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photopolymerizable material is provided that is suitable for use in the production of coatings or resists on printed circuit boards, for example The material is an ethylenically unsaturated polymerizable reaction product of a polyepoxide and a mixture of (i) a major proportion of an ethylenically unsaturated carboxylic acid and (ii) a minor. proportion of a saturated aliphatic or aromatic carboxylic acid, the reaction product being further modified by reaction with a dicarboxylic acid or anhydride thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.