公开(公告)号：US20160251462A1

公开(公告)日：2016-09-01

申请号：US15030786

申请日：2014-10-28

Applicant: W. R. Grace & Co.-Conn.

Inventor： Chai-Jing Chou ,  Daniel W. Baugh, III ,  John Kaarto ,  Jan W. Van Egmond ,  Jeffrey D. Goad ,  William G. Sheard

IPC: C08F210/06 ,  F16L11/06 ,  F16L11/12

CPC classification number: C08F210/06 ,  F16L9/127 ,  F16L11/06 ,  F16L11/125 ,  C08F210/16 ,  C08F2500/12 ,  C08F2500/15

Abstract: A composition is provided which comprises a propylene ethylene random copolymer having a melt flow rate (MFR) (as determined according to ASTM D1238, 230° C., 2.16 Kg) of less than 1 g/10 min, a xylene solubles content of less than 7% by weight, an ethylene content of from 3 to 5 percent by weight of the copolymer, and a value equal to or greater than 92 for the product of the Koenig B value times the % mm triads measured on the xylene insoluble fraction of the random copolymer obtained by the wet method. Pipes made from the composition demonstrate improved pressure endurance.

Abstract translation: 提供了一种组合物，其包含丙烯乙烯无规共聚物，其熔体流动速率（MFR）（根据ASTM D1238测定，230℃，2.16Kg）小于1g / 10分钟，二甲苯可溶物含量少 超过7重量％，乙烯含量为共聚物重量的3至5重量％，并且对于Koenig B值乘以在二甲苯不溶部分测量的％mm三单元组的乘积，等于或大于92的值 通过湿法获得的无规共聚物。 由该组合物制成的管道显示出改善的耐压性能。

公开(公告)号：US10336840B2

公开(公告)日：2019-07-02

申请号：US15030786

申请日：2014-10-28

Applicant: W. R. Grace & Co.-Conn.

Inventor： Chai-Jing Chou ,  Daniel W. Baugh, III ,  John Kaarto ,  Jan W. Van Egmond ,  Jeffrey D. Goad ,  William G. Sheard

IPC: C08F210/06 ,  F16L11/06 ,  F16L11/12 ,  F16L9/127

Abstract: A composition is provided which comprises a propylene ethylene random copolymer having a melt flow rate (MFR) (as determined according to ASTM D1238, 230° C., 2.16 Kg) of less than 1 g/10 min, a xylene solubles content of less than 7% by weight, an ethylene content of from 3 to 5 percent by weight of the copolymer, and a value equal to or greater than 92 for the product of the Koenig B value times the % mm triads measured on the xylene insoluble fraction of the random copolymer obtained by the wet method. Pipes made from the composition demonstrate improved pressure endurance.