发明申请
US20110177455A1 POLYMER, RESIST COMPOSITION, AND PATTERNING PROCESS 有权
聚合物,耐腐蚀组合物和方法

POLYMER, RESIST COMPOSITION, AND PATTERNING PROCESS
摘要:
A polymer comprising recurring units of formula (1) and having a solubility in alkaline developer which increases under the action of an alkaline developer is provided. The polymer has transparency to radiation of up to 200 nm and improved water repellency, water slip, acid lability and hydrolysis and is useful as an additive polymer to formulate a resist composition. R1 is H, F, methyl, or trifluoromethyl, R2 is a monovalent fluorinated hydrocarbon group, An is a (n+1)-valent hydrocarbon or fluorinated hydrocarbon group, and n is 1, 2 or 3.
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