公开(公告)号：US5929147A

公开(公告)日：1999-07-27

申请号：US665785

申请日：1996-06-18

申请人： David E. Pierick ,  Thomas J. O'Neal

发明人： David E. Pierick ,  Thomas J. O'Neal

IPC分类号： A61L2/08 ,  C08K5/00 ,  C08K5/103 ,  C08K5/3435 ,  C08K5/5419 ,  C08K5/544 ,  C08L23/08 ,  C08L23/10 ,  C08L23/16

CPC分类号： C08K5/0008 ,  C08K5/5442 ,  C08L23/10 ,  C08L23/0815 ,  C08L23/16 ,  Y10T428/139

摘要： An embrittlement-resistant polyolefin composition, including: (a) at least 80% by weight, based on the total weight of the polyolefin composition, of a crystalline polymer comprising either a propylene homopolymer having an isotactic index greater than 90 or a random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, (b) an elastomeric copolymer of ethylene and either propylene or butene-1, where the elastomeric copolymer is present in an amount sufficient to enhance the flexibility of the polyolefin composition, without adversely affecting the clarity of the polyolefin composition, and where the polyolefin composition has a heat distortion temperature of at least 60.degree. C. Optional components include a stabilizing amount of a hindered amine light stabilizer, an acid neutralizing agent, and a sorbitol-based compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.

摘要翻译： 一种耐脆性聚烯烃组合物，包括：（a）基于聚烯烃组合物的总重量，至少80重量％的结晶聚合物包含全同立构指数大于90的丙烯均聚物或无规共聚物 丙烯和乙烯或C 4 -C 10 1-烯烃，（b）乙烯和丙烯或丁烯-1的弹性共聚物，其中弹性共聚物的存在量足以增强聚烯烃组合物的柔韧性，而不会不利地影响 聚烯烃组合物的透明度，以及聚烯烃组合物的热变形温度为至少60℃的任何组分，包括稳定量的受阻胺光稳定剂，酸中和剂和山梨糖醇基化合物。 组合物可用于制造必须通过照射或通过高压灭菌消毒的医疗制品和食品包装材料。