Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 30, 2010
Patent Application Number
11822444
Date Filed
July 5, 2007
Patent Primary Examiner
Patent abstract
Novel polymerizable ester compounds having formulae (1) to (4) undergo no acid-induced decomposition by β-elimination wherein A1 is a polymerizable functional group having a carbon-carbon double bond, R1 is H or —C—(R5)3, R2 and R3 are alkyl, R4 is H or alkyl, R5 is a monovalent hydrocarbon group, X is alkylene, Y is methylene, ethylene or isopropylidene, Z is alkylene, and n=1 or 2. Resist compositions comprising polymers derived from the ester compounds have excellent sensitivity and resolution and lend themselves to micropatterning lithography.
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