C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/144, 96/264,
C08G 18/00 (2006.01) C08G 18/08 (2006.01) C08G 18/81 (2006.01) C08G 18/83 (2006.01) C08G 63/00 (2006.01) C08G 69/00 (2006.01) G03F 7/032 (2006.01)
Patent
CA 1212798
ABSTRACT A polymer composition comprising a urethane having terminal unsatura- tion and a terminal carboxyl group and which is capable of further free radical polymerization has been synthesized. This polymer can be a liquid or a solid depending on the molecular weight and backbone of the polymer. This polymer as a liquid has been found to be very useful in producing printed circuit boards by photo resist processes.
393998
Hein Paul R.
Tsao Jung-Hsien
National Starch And Chemical Investment Holding Corporation
Smart & Biggar
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