Polyurethane polymer having bisphenol group and photoimageable composition containing the same
US8835522B2 · kind B2 · utility
0Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2007 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Mar 26, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a polymer having the structure of formula (I)wherein n, R1, R2, R3, R4, R5, R6, a, b and c are as defined in the specification. The present invention also provides a negative-acting photoimageable composition comprising the above-mentioned polymer of formula (I), which is suitable for the fabrication of printed circuit boards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.