Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1981-01-16
1983-12-27
Morris, Theodore
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415923, 525920, C08G 1800, C08G 6300, C08G 6900
Patent
active
044229143
ABSTRACT:
A polymer composition comprising a urethane having terminal unsaturation 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.
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Hein Paul R.
Tsao Jung-Hsien
Baker William L.
Barrett Carole F.
McGreal Michael J.
Morris Theodore
W. R. Grace & Co.
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