G - Physics – 03 – F
Patent
G - Physics
03
F
G03F 7/038 (2006.01) G03F 7/027 (2006.01) G03F 7/029 (2006.01) G03F 7/033 (2006.01)
Patent
CA 2266607
The invention provides a negative-acting photoimageable composition comprising A) between about 30 and about 80 wt% based on total weight of A) plus B) of a binder polymer having acid functionality sufficient to render said photoimageable composition developable in alkaline aqueous solution, B) between about 20 and about 70 wt% based on total weight of A) plus B) of an addition-polymerizeable, non-gaseous .alpha.,.beta.- ethylenically unsaturated compound(s) capable of forming a high polymer by free-radical initiated chain-propagating addition polymerization, at least about 50 mole percent of the .alpha.,.beta.- ethylenically unsaturated moieties of B) being methacrylic moieties, and C) between about 0.1 and about 20 wt% based on the total weight of A) plus B) of a photoinitiator chemical system, the photoinitiator chemical system comprising between about .005 and about 3 wt% relative to total weight of A) plus B) of triphenylphosphine and between about .005 and about 2 wt% relative to total weight of A) plus B) of n-phenylglycine.
Barr Robert
Kosaka Eiji
Lundy Daniel E.
Murakami Shigeru
Gowling Lafleur Henderson Llp
Nichigo Morton Co. Ltd.
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