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US 4,906,527 AGranted
Blends of polyetherimide and ethylene vinyl acetate copolymers
AssigneeGeneral Electric Company
InventorDeborah L. Allen
Life of this patent
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Abstract
Homogenous blends of polyetherimide polymers and ethylene vinyl acetate copolymers prepared by solution blending techniques or melt blending are characterized by high impact strengths. Further disclosed are laminates of polyetherimide and ethylene vinyl acetate copolymers that are characterized by strong bonding strengths between the layers of the laminates.
Claims11
A polyetherimide-ethylene vinyl acetate copolymer blend comprising:
- (A) from about 85 wt. & to about 97 wt % of a polyetherimide of the formula:
- where a represents a whole number in excess of 1, --O--Z--O-- is in the 3,3'-, 3,4'-, 4,3'- or 4,4'- positions and Z is a member of the class consisting of (1) ##STR9## and (2) divalent organic radicals of the general formula ##STR10## where X is a member selected from the class consisting of divalent radicals of the formula:
- ##STR11## where q is 0 or 1, y is a whole number from 1 to 5, R is a divalent organic radical selected from the class consisting of (a) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (b) alkylene radicals and cycloalkylene radicals having from 2 to about 20 carbon atoms, C.sub.(2-8) alkylene terminated polydiorganosiloxane, and (c) divalent radicals included by the formula:
- ##STR12## where Q is a member selected from the class consisting of ##STR13## and x is a whole number from 1 to 5 inclusive, and (B) about 3 wt. % to about 15 wt. % of an ethylene vinyl acetate copolymer.
1 more element
Dependencies are inferred from the claim text.