METHOD FOR THE PREPARATION OF A POLY(ARYLENE ETHER)-POLYOLEFIN COMPOSITION, AND COMPOSITION PREPARED THEREBY

WIPO Patent Application WO2002053644

A3

A poly(arylene ether)-polyolefin composition is prepared by melt-blending a poly(arylene ether), a poly(alkenyl aromatic) resin, a hydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene, and an unhydrogenated block copolymer of an alkenyl aromatic compound and a conjugated diene to form a first blend, and melt-blending the first blend and a polyolefin to form a second blend. Reinforcing fillers may, optionally, be added during formation of the second blend or in an additional step. Multiple mixing elements, low throughput, and high extruder rotations per minute may be used to achieve high energy mixing of the first and second blends. Compositions prepared by the method exhibit an improved balance of impact strength, stiffness, and heat resistance, as well as reduced variability of physical properties.

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ADEDEJI ADEYINKA
HAYLOCK JOHN C
HOSSAN ROBERT
PECAK WILLIAM
VENDON MARK VICTOR

PCT/US2001/046389

January 30, 2003

December 03, 2001

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GEN ELECTRIC (US)

B29B7/42; C08K7/14; C08L23/00; C08L23/10; C08L25/00; C08L51/04; C08L53/00; C08L53/02; C08L71/12; C08L23/16; (IPC1-7): C08L71/12; B29C47/10

EP0352057A2	1990-01-24
EP0274029A1	1988-07-13
US6057401A	2000-05-02

DATABASE WPI Section Ch Week 199534, Derwent World Patents Index; Class M24, AN 1995-261599, XP002204324

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