公开(公告)号：US20010053821A1

公开(公告)日：2001-12-20

申请号：US09816662

申请日：2001-03-26

Applicant: ATOFINA

Inventor： Patrice Robert ,  Christophe Le Roy ,  Jerome Pascal

IPC: C08L023/04 ,  C08F008/00

CPC classification number: C09D123/0815 ,  C08L23/06 ,  C08L23/0815 ,  C08L51/06 ,  C08L2205/02 ,  C08L2314/06 ,  C08L2666/06 ,  C09J123/02

Abstract: The present invention relates to a coextrusion binder comprising: 5 to 35 parts of a polymer (A) which itself consists of a blend of 80 to 20 parts of a metallocene polyethylene (A1) of relative density between 0.865 and 0.915 and of 20 to 80 parts of a non-metallocene LLDPE polyethylene (A2), the blend of (A1) and (A2) being cografted by an unsaturated carboxylic acid; 95 to 65 parts of a polyethylene (B) chosen from ethylene homopolymers or copolymers and elastomers; the blend of (A) and (B) being such that: the content of grafted unsaturated carboxylic acid is between 30 and 100 000 ppm, the MFI or melt flow index (ASTM D 1238 standard: 190null C./2.16 kg) is between 0.1 and 10 g/10 min. The present invention also relates to a multilayer structure.

Abstract translation: 共挤出粘合剂本发明涉及一种共挤出粘合剂，其包含：5-35份聚合物（A），其本身由80至20份相对密度为0.865至0.915和20至80的茂金属聚乙烯（A1）的共混物 部分非茂金属LLDPE聚乙烯（A2），（A1）和（A2）的共混物由不饱和羧酸共同接枝; 95至65份选自乙烯均聚物或共聚物和弹性体的聚乙烯（B）; （A）和（B）的共混物使得：接枝不饱和羧酸的含量为30-10000ppm，MFI或熔体流动指数（ASTM D 1238标准：190℃/ 2.16kg）为 介于0.1和10g / 10分钟之间。 本发明还涉及一种多层结构。