申请人:Flexman Arthur Edmund
公开号:US20050131120A1
公开(公告)日:2005-06-16
Toughened poly(lactic acid) resin compositions comprising poly(lactic acid) and an impact modifier comprising an ethylene copolymer made from monomers (a) ethylene; (b) one or more olefins of the formula CH
2
═C(R
1
)CO
2
R
2
, where R
1
is hydrogen or an alkyl group with 2-8 carbon atoms and R
2
is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH
2
═C(R
3
)CO
2
R
4
, where R
3
is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R
4
is glycidyl. The ethylene copolymer may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.
增韧聚(乳酸)树脂组合物,包含聚(乳酸)和抗冲改性剂,抗冲改性剂包含乙烯共聚物,乙烯共聚物由单体(a)乙烯;(b)一种或多种烯烃(式 CH
2
═C(R
1
) CO
2
R
2
其中 R
1
是氢或含有 2-8 个碳原子的烷基,R
2
是具有 1-8 个碳原子的烷基,如甲基、乙基或丁基;以及 (c) 一种或多种烯烃,其式为 CH
2
═C(R
3
) CO
2
R
4
其中 R
3
是氢或含有 1-6 个碳原子的烷基,如甲基,以及 R
4
是缩水甘油。乙烯共聚物可进一步由一氧化碳单体制成。组合物还可进一步包含一种或多种乙烯/丙烯酸酯和/或乙烯/乙烯酯聚合物、离子聚合物和阳离子接枝剂。