A copolymer of lactic acid and glycolic acid which has a weight-average molecular weight of not less than about 5000 and a dispersity of about 1.5 to 2 is advantageously used as a biodegradable polymer for medical preparation.
申请公布号
US4677191(A)
申请公布日期
1987.06.30
申请号
US19850751672
申请日期
1985.07.03
申请人
WADA PURE CHEMICAL IND., LTD.;TAKEDA CHEMICAL INDUSTRIES, LTD.