Directly photodefinable polymer compositions and methods...

Details Directly photodefinable polymer compositions and methods... Directly photodefinable polymer compositions and methods...

2007-12-03

2011-11-08

Cain, Edward (Department: 1762)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C526S258000, C526S259000, C526S262000

Reexamination Certificate

active

08053515

ABSTRACT:
A polymer includes a first type of repeat unit represented by Formula I:where X is selected from —CH2—, —CH2—CH2—, or —O—; m is an integer from 0 to about 5; and where for the first type of repeat unit one of R1, R2, R3, and R4is one of a maleimide containing group and for the second type of repeat unit one of R1, R2, R3, and R4is a hindered aromatic group, a C8or greater alkyl group, a C4or greater halohydrocarbyl or perhalocarbyl group, a C7or greater aralkyl group, or a heteroatom hydrocarbyl or halohydrocarbyl group.

REFERENCES:
patent: 2002/0198356 (2002-12-01), Dershem et al.
patent: 2004/0082724 (2004-04-01), Dershem et al.
International Search Report for PCT/US2007/086639 dated May 9, 2008.
Chinese Office Action for Chinese Application No. 200780050794.0 mailed on Mar. 7, 2011.

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