| 摘要 |
K-17675/+/CGM 354 Linear polymers Substantially linear polymers that are characterised by the presence of a radical of formula wherein X1 is selected from the group consisting of -O-,-O-SO2-,-O-CO-,-O-CO-O-and -O-CO-NH-, Y1 is selected from the group consisting of -O-,-SO2-O-,-CO-O-,-O-CO-O-and -NH-CO-O-, R1 is a divalent aliphatic, cycloaliphatic, aromatic or araliphatic radical after the removal of the functional groups, or wherein, if Y1 is -O- or -O-CO-O-, the group X1-R1 may alternatively be a direct C-C bond, R2 is alkyl, alkenyl, cycloalkyl, aryl or halogen, R3 is alkyl, cycloalkyl, aryl or halogen, and each of m and n, independently of the other, is an integer from 0 to 4, are described.
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