Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-01-03
1985-07-09
Henderson, Christopher A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
20415914, 525386, 430966, C08F 808
Patent
active
045283320
ABSTRACT:
Novel copolymers having a weight average molecular weight of 500 to 5,000,000 and comprising 1 to 99% by weight of a recurring unit represented by the formula (I), 1 to 99% by weight of a recurring unit represented by the formula (II) and 0 to 98% by weight of a recurring unit represented by the formula (III): ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group; X is a hydrogen atom, a methyl group or a phenyl group; Y is a hydrogen atom, a halogen atom, a methyl group, a phenyl group or a cyano group; and Z is a phenyl group, a phenyl group substituted by at least one alkyl group having 1 to 8 carbon atoms, a polycyclic aromatic hydrocarbon group having 10 to 20 carbon atoms, a cyano group, --COOR.sup.2 (in which R.sup.2 is an alkyl group having 1 to 20 carbon atoms or an aromatic hydrocarbon group having 6 to 14 carbon atoms), --COR.sup.3 (in which R.sup.3 is an alkyl group having 1 to 12 carbon atoms or an aromatic hydrocarbon group having 6 to 14 carbon atoms), a nitro group, a pyridyl group, ##STR2## (in which R.sup.3 has the same meaning as defined above), or a halogen atom. The above-mentioned copolymers are useful as resist materials which are sensitive to high-energy radiations.
Ai Hideo
Ikeda Akihiko
Matsuoka Yoshio
Asahi Kasei Kogyo Kabushiki Kaisha
Henderson Christopher A.
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