Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1990-09-20
1993-11-23
McCamish, Marion E.
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
430273, 430311, 430325, 430935, G03C 168
Patent
active
052643247
ABSTRACT:
The present invention relates to a radiation-polymerizable mixture which includes a polymerizable compound, a polymeric binder which has units of methacrylic acid, a methacrylic acid ester and a styrene, the latter in a proportion of 40 to 65% by weight, a finely divided mineral pigment on a silicic acid or silicate basis, a photopolymerization initiator, a compound having at least two epoxy groups in its molecule and a thermal hardener for epoxy groups. The mixture is advantageous, in particular, for producing solder masks and can be cured after exposure to an image and development by heating to about 80.degree. to 150.degree. C. to form a stencil which is resistant under soldering conditions.
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Decker Rudolf
Emmelius Michael
Erbes Kurt
Herwig Walter
Hoechst Aktiengesellschaft
McCamish Marion E.
Rosasco S.
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