| 摘要 |
A homopolymer or a copolymer comprises a polymerizable compound represented by formula (I): A-X-COCOOR1(I) wherein R1 represents a hydrogen atom, a C1-C5 alkyl group or an aryl group; X represents an oxygen atom, a sulfur atom, -COO- or -NR5- wherein R5 is a hydrogen atom or a C1-C5 alkyl group; A represents a C3-C18 alkenyl, alkynyl, alkenylaryl or alkenylaralkyl group, or a group represented by: <IMAGE> wherein R2 and R3, which may be the same or different, independently represent a hydrogen atom or a C1-C5 alkyl group; Y represents an oxygen atom or -NR4- wherein R4 represents a hydrogen atom or a C1-C5 alkyl group; n is an integer of 1 to 5; m is an integer of 1 to 10; and l is 0 or an integer of 1 to 20; with the proviso that if Y is present, X is not -NR5-. Additionally, disclosed are processes of preparing the homopolymer or copolymer as well as the polymerizable compound.
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