公开(公告)号：US07015283B2

公开(公告)日：2006-03-21

申请号：US10962312

申请日：2004-10-08

申请人： Jean-Roch Schauder ,  Guy Joseph Wouters ,  Sudhin Datta

发明人： Jean-Roch Schauder ,  Guy Joseph Wouters ,  Sudhin Datta

IPC分类号： C08L51/04 ,  C08L51/06 ,  C08L77/00

CPC分类号： C08L77/00 ,  C08L23/0815 ,  C08L23/10 ,  C08L23/12 ,  C08L23/16 ,  C08L51/06 ,  C08L77/02 ,  C08L77/06 ,  C08L2205/03 ,  C08L2205/035 ,  C08L2205/08 ,  C08L2666/20 ,  C08L2666/24 ,  C08L2666/02 ,  C08L2666/06

摘要： The invention relates to thermoplastic compositions in which (A) an isotactic polypropylene, optionally containing comonomer, with a melting point of at least 110° C. and (B) a polyamide, (A) and (B) constituting at least 70 wt %, are blended with (C) at least 2 wt % of a grafted functionalized propylene-based elastomer having isotactic crystallinity and containing at least 0.25 wt % of MAH-derived units based on the total weight of (C). Optionally (D) an ungrafted polyolefin may be added with a melting point of less than 100° C., (C) and (D) combined being at least 8 wt % and the wt % of (A), (B), (C) and (D) being calculated on the basis of the total polymer weight of the thermoplastic composition.

公开(公告)号：US5766713A

公开(公告)日：1998-06-16

申请号：US490385

申请日：1995-06-14

申请人： Periagaram S. Ravishankar ,  Jean-Roch Schauder

发明人： Periagaram S. Ravishankar ,  Jean-Roch Schauder

IPC分类号： C08F210/18 ,  C08L23/16 ,  F16L11/04 ,  F16L11/12 ,  C08F255/04

CPC分类号： F16L11/12 ,  C08F210/18 ,  C08L23/16 ,  F16L11/04 ,  Y10T428/1386 ,  Y10T428/139 ,  Y10T428/1397 ,  Y10T428/31855 ,  Y10T428/31931 ,  Y10T428/31938

摘要： Elastomeric vehicle hoses based on ethylene, alpha-olefin, vinyl norbornene elastomeric polymers will exhibit improved cure state and improved long term heat aging. Long term heat aging is an important consideration, as vehicle lives get longer and under the hood temperatures get higher. Also, such elastomeric based hoses will have improved compression set under a wide range of service temperatures. Such excellent compression set values lead to improved sealability over a wide temperature range. Additionally, these elastomeric polymers exhibit lower compound viscosity leading generally to improved processability.

摘要翻译： 基于乙烯，α-烯烃，乙烯基降冰片烯弹性体聚合物的弹性车辆软管将显示出改进的固化状态和改善的长期热老化。 长期的热老化是一个重要的考虑因素，随着车辆寿命的延长，车内的温度越来越高。 此外，这种基于弹性体的软管将在宽范围的使用温度下具有改进的压缩永久变形。 这种优异的压缩永久变形值导致在宽的温度范围内的改善的密封性。 另外，这些弹性体聚合物显示较低的化合物粘度，通常导致改进的加工性能。