Thermoplastic composition containing a poly(methyl ethenyl benzene) resin and a poly(phenylene oxide) resin
AssigneeMobil Oil Corporation
InventorRobert V. Russo
Life of this patent
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Abstract
Thermoplastic blends having superior capability and homogeneity comprising a poly(phenylene oxide) resin and a resin of poly(methyl ethenyl benzene) isomers in which the predominant isomer is 1-methyl-4-ethenyl benzene, are disclosed. The poly(phenylene oxide) resin can contain substituted phenylene units and the poly(methyl ethenyl benzene) resin can be a polymer of solely methyl ethenyl benzene isomers, or a random, block or graft copolymer comprising 50 weight percent or more of methyl ethenyl benzene isomers and up to 50 weight percent of other ethylenically unsaturated monomers.
Claims12
A polymeric composition comprising homogeneous and compatible blend of about
- (a) 20 to 80 weight percent poly(methyl ethenyl benzene) resin comprising at least 50 weight percent of polymerized units derived from a mixture of isomers of methyl ethenyl benzene consisting essentially of 0 to 0.1 percent by weight 1-methyl-2-ethenyl benzene, 0 to 15 weight percent, 1-methyl-3-ethenyl benzene, and at least 85 weight percent 1-methyl-4-ethenyl benzene;
- and
- (b) 80 to 20 weight percent of a poly(phenylene oxide) resin having the formula ##STR2## wherein each Q independently is hydrogen, a hydrocarbon radical, a halohydrocarbon radical having at least two carbon atoms between the halogen atom and phenyl nucleus, or halogen, provided that each is free of a tertiary carbon atoms;
- and n is at least 20.
Dependencies are inferred from the claim text.