发明授权
US5616667A Copolymers 失效
共聚物

Copolymers
摘要:
New mixed polymers which can serve as base polymers for high-resolution resists are structured from 40 to 99 mole % of a tert. butyl ester of an unsaturated carboxylic acid and 1 to 60 mole % of an anhydride of an unsaturated carboxylic acid.
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