Photoimageable compositions
US6004725A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Dec 21, 1999 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/113
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A negative acting photoimageable composition comprises PA1 A) between about 30 and about 70 wt %, based on total weight of A) plus B), of a organic binder polymers having sufficient acid functionality to render said photoimageable composition developable in alkaline aqueous solution, PA2 A) comprising between about 3 and about 65 wt % relative to total of A) plus B) a binder polymer A') having a weight average molecular weight between about 5000 and about 40,000 and a T.sub.g of between about 40 and about 100, and 5 to 67 wt % relative to total of A) plus B) a binder polymer A") having a weight average molecular weight between about 41,000 and about 200,000 and a T.sub.g of between about 40 and about 100, PA1 B) between about 30 and about 60 wt %, based on total weight of A) plus B), of .alpha.,.beta.-ethylenically unsaturated compounds, said component B) comprising PA2 B') an isocyanate trimer having tri-.alpha.,.beta.-ethylenically unsaturated functionality, said trimer B') being present at between about 2 to about 30 wt % based on total weight of A) plus B), and PA2 B") 0 to about 5 wt % based on total weight of A) plus B) of other .alpha.,.beta.-ethylenically unsaturated compou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.