公开(公告)号：US07094817B2

公开(公告)日：2006-08-22

申请号：US10474907

申请日：2002-04-17

申请人： Peter Halley ,  Stewart Mcglashan ,  John Gralton

发明人： Peter Halley ,  Stewart Mcglashan ,  John Gralton

IPC分类号： C08L3/02 ,  C08L3/12

CPC分类号： C08L3/14 ,  C08L3/00 ,  C08L3/02 ,  C08L3/04 ,  C08L3/18 ,  C08L67/06 ,  C08L2666/02 ,  C08L2666/26

摘要： A biodegradable polymer includes a) 20 to 60% of a mixture of starch and/or a modified starch, b) 8 to 22% of starch plasticisers and processing agents c) 30 to 70% of one or more biodegradable aliphatic polyesters d) 1 to 10% of a layered silicate clay mineral. The silicate mineral is an organoclay which has been formed by reacting clay with an intercalating chemical to compatibilise it with the polymers so that the clay is exfoliated and makes the blend amorphous. The polymers may also include the usual additives including e) from 0 to 20% by weight of a polyol plasticiser f) from 0.1 to 1.5% by weight of a C12–22 fatty acid or salt or a destructing agent preferably urea and/or urea derivatives, and g) from 0 to 12% by weight of added water. The polyester may be modified by reaction with maleic anhydride.

摘要翻译： 可生物降解的聚合物包括a）20至60％的淀粉和/或改性淀粉的混合物，b）8至22％的淀粉增塑剂和加工剂c）30至70％的一种或多种可生物降解的脂族聚酯d）1 至10％的层状硅酸盐粘土矿物。 硅酸盐矿物是通过使粘土与嵌入化学物质反应形成的有机粘土，以使其与聚合物相容，使得粘土被剥离并使混合物成为无定形的。 聚合物还可以包括通常的添加剂，包括e）0-20重量％的多元醇增塑剂f）0.1-1.5重量％的C 12-22脂肪酸或盐或 破坏剂优选为脲和/或脲衍生物，和g）0至12重量％的加入的水。 可以通过与马来酸酐反应来改性聚酯。