초록

Described herein are molding compositions of blends of a poly(aryl ether) resin and a polyetherimide resin. These compositions have improved environmental stress crack resistance.

대표청구항 ▼

A molding composition comprising a blend of from about 95 to about 5 weight percent of a poly(aryl ether) and from about 5 to about 95 weight percent of a polyetherimide of the following formulae: [Figure] (I) wherein a is an integer greater than 1, to about 10,000 or more, －O－R4－O－is attached to th

A molding composition comprising a blend of from about 95 to about 5 weight percent of a poly(aryl ether) and from about 5 to about 95 weight percent of a polyetherimide of the following formulae: [Figure] (I) wherein a is an integer greater than 1, to about 10,000 or more, －O－R4－O－is attached to the 3 or 4 and 3′and 4′positions and R4 is selected from (a) a substituted or unsubstituted aromatic radical such as [Figure] [Figure] (b) a divalent radical of the formula: [Figure] wherein R6 is independently C1 to C6 alkyl, or halogen and R7 is selected from －O－, [Figure] alkylene of 1 to 6 carbon atoms, cycloalkylene of 4 to 8 carbon atoms, alkylidene of 1 to 6 carbon atoms or cycloalkylidene of 4 to 8 carbon atoms, R5 is selected from an aromatic hydrocarbon radical having from 6-20 carbon atoms and halogenated derivatives thereof, or alkyl substituted derivatives thereof, wherein the alkyl group contains 1 to 6 carbon atoms, alkylene and cycloalkylene radicals having from 2 to 20 carbon atoms, C2-C8 alkylene terminated polydiorganosiloxane and a divalent radical of the formula [Figure] wherein R6 and R7 are as previously defined and R7 may be a direct bond; [Figure] (II) wherein －O－Z8 is independently hydrogen, lower alkyl or lower alkoxy [Figure] (b) [Figure] (c) wherein the oxygen may be attached to either ring and located ortho or para to one of the bonds to the anhydride carbonyl group wherein a, R4 and R5 are as previously defined.