Acid-labile ester monomer having spirocyclic structure, polymer, resist composition, and patterning process
申请人:Kinsho Takeshi
公开号:US08791288B2
公开(公告)日:2014-07-29
An acid-labile ester monomer of spirocyclic structure has formula (1) wherein Z is a monovalent group having a polymerizable double bond, X is a divalent group which forms a cyclopentane, cyclohexane or norbornane ring, R2 is H or monovalent hydrocarbon, R3 and R4 are H or monovalent hydrocarbon, or R3 and R4, taken together, stand for a divalent group which forms a cyclopentane or cyclohexane ring, and n is 1 or 2. A polymer obtained from the acid-labile ester monomer has so high reactivity in acid-catalyzed elimination reaction that the polymer may be used to formulate a resist composition having high resolution.
一种酸敏感酯单体,其为螺环结构,化学式为(1),其中Z为具有可聚合双键的一价基团,X为形成环戊烷、环己烷或去甲基环辛烷环的二价基团,R2为H或一价碳氢基团,R3和R4为H或一价碳氢基团,或者R3和R4结合在一起,代表形成环戊烷或环己烷环的二价基团,n为1或2。从酸敏感酯单体获得的聚合物在酸催化消除反应中具有很高的反应性,因此可以用于制备具有高分辨率的光刻胶组合物。