Polyarylate blends with ethylene-alkyl acrylate copolymers

Claim 2

A molding composition comprising a blend of: (a) a polyarylate derived from a dihydric phenol and an aromatic dicarbocxylic acid, and (b) an ethylene-ethyl acrylate copolymer.

Claim 3

A composition as defined in claim 1 wherein the dihydric phenol is of the formula: ##STR21## wherein Y is selected from alkyl groups of 1 to 4 carbon atoms, chlorine or bromine, each z, independently, has a value of from 0 to 4, inclusive, and R' is a divalent saturated or unsaturated aliphatic hydrocarbon radical selected from alkylene and alkylidene radicals having from 1 to 3 carbon atoms, and cycloalkylene radicals having up to and including 9 carbon atoms.

Claim 4

A composition as defined in claim 2 wherein each z is 0 and R' is an alkylidene radical of 3 carbon atoms.

Claim 5

A composition as defined in claim 1 wherein the aromatic dicarboxylic acid is a mixture of isophthalic and terephthalic acids.

Claim 6

A composition as defined in claim 1 wherein the ethylene-ethyl acrylate copolymer is an ethylene-ethyl acrylate copolymer.

Claim 7

A composition as defined in claim 1 which contains a thermoplastic polymer selected from the group consisting of a polyester, an aromatic polycarbonate, a styrene polymer, an alkyl acrylate polymer, a polyurethane, a vinyl chloride polymer, a poly(aryl ether), a copolyetherester block copolymer, a polyhydroxyether, and combinations thereof.

Claim 8

A composition as defined in claim 6 wherein the thermoplastic polymer is a polyester.

Claim 9

A composition as defined in claim 7 wherein the polyester has repeating units of the general formula: ##STR22##

Claim 10

A composition as defined in claim 8 wherein the polyester is poly(ethylene terephthalate).

Claim 11

A composition as defined in claim 6 wherein the thermoplastic polymer is an aromatic polycarbonate.

Claim 12

A composition as defined in claim 10 wherein the aromatic polycarbonate is the reaction product of a dihydric phenol and a carbonate precursor.

Claim 13

A composition as defined in claim 11 wherein the dihydric phenol is bisphenol-A and the carbonate precursor is carbonyl chloride.

Claim 14

A composition as defined in claim 6 wherein the thermoplastic polymer is a styrene polymer.

Claim 15

A composition as defined in claim 13 wherein the styrene resin is prepared by polymerizing a conjugated diene monomer or a conjugated diene monomer with a monomer copolymerizable therewith or an acrylic acid ester to provide an elastomeric backbone and thereafter grafting at least one grafting monomer onto said backbone.

Claim 16

A composition as defined in claim 14 wherein the conjugated diene monomer is butadiene and the grafting monomer is selected from styrene, an acrylonitrile, an acrylic acid ester, or mixtures thereof.

Claim 17

A composition as defined in claim 13 wherein the styrene resin is a butadiene/styrene/acrylonitrile resin.

Claim 18

A composition as defined in claim 6 wherein the thermoplastic polymer is an alkyl acrylate polymer.

Claim 19

A composition as defined in claim 17 wherein the alkyl acrylate is poly(methyl methacrylate).

Claim 20

A composition as defined in claim 17 wherein the alkyl acrylate is a copolymer of methyl methacrylate and a vinyl monomer wherein the amount of methyl methacrylate is greater than about 70 percent by weight of the copolymer.

Claim 21

A composition as defined in claim 19 wherein the vinyl monomer is selected from acrylonitrile, N-allylmaleimide, N-vinylmaleimide or an alkyl acrylate or methacrylate, wherein the alkyl group contains from 1 to 8 carbon atoms.

Claim 22

A composition as defined in claim 17 wherein the alkyl acrylate is alkyl acrylate grafted onto an unsaturated elastomeric backbone, wherein the alkyl acrylate comprises greater than about 50 weight percent of the graft copolymer formed.

Claim 23

A composition as defined in claim 6 wherein the thermoplastic polymer is a polyurethane.

Claim 24

A composition as defined in claim 22 wherein the polyurethane is derived from a polyester resin having a molecular weight of at least about 600, an aromatic diisocyanate, and a low molecular weight chain extender having active hydrogen containing groups which are reactive with the diisocyanate.

Claim 25

A composition as defined in claim 22 wherein the polyurethane is derived from a polyether, an organic diisocyanate, and a low molecular weight chain extender having active hydrogen containing groups which are reactive with isocyanate.

Claim 26

A composition as defined in claim 24 wherein the polyether is selected from polytetramethylene glycol having an average molecular weight between about 600 and about 2000, polypropylene glycol, and polyethylene glycol having a molecular weight above about 600.

Claim 27

A composition as defined in claim 6 wherein the thermoplastic polymer is a poly(vinyl chloride) polymer.

Claim 28

A composition as defined in claim 26 wherein the poly(vinyl chloride) polymer is a copolymer of vinyl chloride with an olefinically unsaturated polymerizable compound which contains at least about 80 percent by weight of vinyl chloride incorporated therein.

Claim 29

A composition as defined in claim 6 wherein the thermoplastic polymer is a poly(aryl ether).

Claim 30

A composition as defined in claim 28 wherein the poly(aryl ether) comprises recurring units of the formula: --O--E--O--E'-- wherein E is the residuum of a dihydric phenol and E' is the residuum of a benzenoid compound having an inert electron withdrawing group.

Claim 31

A composition as defined in claim 29 wherein the poly(aryl ether) has recurring units having the formula: ##STR23## A and A 1 can be the same or different inert substituent groups and are selected from alkyl groups having from 1 to 4 carbon atoms, fluorine, chlorine, bromine, iodine, or alkoxy radicals having from 1 to 4 carbon atoms, R 1 represents a bond between aromatic carbon atoms or a divalent connecting radical, R 2 is sulfone, carbonyl or sulfoxide, r and r 1 are integers having a value of from 0 to 4, inclusive.

Claim 32

A composition as defined in claim 30 wherein r and r 1 are O, R 2 is SO 2 , and R 1 is the following ##STR24##

Claim 33

A composition as defined in claim 6 wherein the thermoplastic polymer is a copolyetherester block copolymer.

Claim 34

A composition as defined in claim 32 wherein the copolyetherester block copolymer has a multiplicity of recurring intralinear long chain and short chain ester units connected head-to-tail through ester linkages, said long chain ester units being represented by the following structure: ##STR25## and said short chain ester units being represented by the following structure ##STR26## wherein G is a divalent radical remaining after removal of terminal hydroxy groups from a poly(alkylene oxide) glycol having a molecular weight of from about 400 to about 3500, D is a divalent radical remaining after removal of hydroxyl groups from a low molecular weight diol, and R 3 is a divalent radical remaining after removal of carboxyl groups from a dicarboxylic acid; with the provisos that the short chain ester units constitute from about 25 to 65% by weight of the copolyester, at least about 70% of the R 3 groups are 1,4-phenylene radicals, at least about 70% of the D groups are 1,4-butylene radicals, and the sum of the percentages of the R 3 groups which are not 1,4-phenylene radicals and of the D groups which are not 1,4-butylene radicals do not exceed about 30%.

Claim 35

A composition as defined in claim 6 wherein the thermoplastic polymer is a polyhydroxyether.

Claim 36

A composition as defined in claim 34 wherein the polyhydroxyether has the general formula F--O--E"--O--.sub.n wherein F is the radical residuum of a dihydric phenol, E" is a radical residuum of an epoxide selected from mono-and diepoxides containing from 1 to 2 hydroxyl groups and n is an integer which represents the degree of polymerization and is at least about 30.