C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 77/00 (2006.01) C08L 23/02 (2006.01) C08L 23/08 (2006.01) C08L 51/04 (2006.01) C08L 51/06 (2006.01) C08L 23/10 (2006.01) C08L 23/16 (2006.01)
Patent
CA 2123080
2123080 9309183 PCTABS00022 A process for melt-blending a polyamide with a crystalline polyolefin incompatible therewith in the presence of a rubbery compatibilizing polymer capable of chemically or physically associating with both the polyamide and the polyolefin, at a process temperature higher than the highest melting temperature of any crystalline polymer present and higher than the highest glass transition temperature of any amorphous polymer present but such that significant degradation of any polymer present does not occur, all blend components being present within stated ranges, and the melt viscosity ratio of the polyamide to that of the polyolefin at the process temperature and a shear rate of about 100-200 sec-1 being about 0.1-1.2, especially 0.4-0.8. High stiffness, supertough polymer blends, where notched Izod impact strength exceeds 535 J/m, are obtained.
E. I. Du Pont de Nemours And Company
Sim & Mcburney
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