| 摘要 |
A plastics mixt. used for making moulding compsns. with relatively high tracking index (CTI) contains 60-95 wt.% linear high mol. polyester (I) and 5-40 wt.% olefin copolymer (II) comprising 50-84.5 wt.% 2-6C unsatd. cpd. (III), 15-35 wt.% acrylate of formula CH2=C(R<1>)-COOR<2> (IV) and 0.5-15 wt.% unsatd. cpd. (V) with a reactive acid, anhydride and/or epoxide gp. In (IV), R<1> = H or 1-6C alkyl; and R<2> = 1-8C alkyl. Pref. in (IV) R<1> = H; R<2> = Et. (II) is C2H4 or C3H6; and (V) is maleic acid or anhydride or methyl glycidyl-methacrylate. The mixt. contains 79-95 wt.% (I) and 5-21 wt.% (II). (II) comprises 60-75 wt.% (III), 23-30 wt.% (IV) and 2-10 wt.% (V). |
