| 摘要 |
PCT No. PCT/JP90/00748 Sec. 371 Date Feb. 7, 1991 Sec. 102(e) Date Feb. 7, 1991 PCT Filed Jun. 8, 1990 PCT Pub. No. WO90/15088 PCT Pub. Date Dec. 13, 1990.The present invention relates to a polyacetal copolymer comprising a polyoxymethylene group (A) and a vinyl polymer group (B), the copolymer having a structure of the formula (I): An-X-B (I) wherein X is a terminal group of B and represents a binding group derived from a compound having at least two carbon atoms and 1 to 4 groups selected from hydroxyl, carboxyl, ester, amino and alkoxy groups, and An means that A is present in the quantity of n times in number, and bonds to X, in which n=1 to 4, and the copolymers has a number average molecular weight of 10,000 to 500,000; a process for the production of said copolymer; and a composition comprising said copolymer and a polyvinyl polymer and/or polyoxymethylene.
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