Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1993-12-22
1996-09-03
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526247, 526253, 5262929, 526293, 526313, 526333, 526334, 528205, C08F23802
Patent
active
055525032
ABSTRACT:
Applicants have discovered an improved photodefined dielectric materials comprising poly(aromatic diacetylenes). The preferred poly(aromatic diacetylenes) are copolymers of aromatic diacetylenes. Specific examples are 1) a copolymer of 4,4'-diethynyldiphenyl ether and m-diethynyl benzene and 2) a copolymer of 4,4'-diethynyldiphenyl ether and 4,4'-bis(3-ethynylphenoxy)-2,2',3,3',5,5',6,6'-octaflurorbiphenyl. These copolymers can be photochemically crosslinked in patterns with exposure of 30 mJ/cm.sup.2 .mu.m and 60 mJ/cm.sup.2 .mu.m, respectively, and patterns have been produced in 10 .mu.m thick films with features as small as 12 .mu.m.
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Kwock Elizabeth W.
Miller Timothy M.
AT&T Corp.
Botos Richard J.
Zitomer Fred
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