Filled compositions of a polyphenylene ether resin and rubber-modified alkenyl aromatic resins

Claim 2

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin and (b) from about 99 to 1 parts by weight of a rubber-modified alkenyl aromatic resin, wherein the improvement comprises the molding composition containing about 50 or less parts by weight of aluminum silicate, based on (a) plus (b).

Claim 3

The molding composition of claim 1 wherein the alkenyl aromatic resin is a rubber-modified polystyrene.

Claim 4

The molding composition of claim 2 wherein the styrene resin is a polybutadiene modified polystyrene.

Claim 5

The molding composition of claim 1 wherein said rubber is a rubbery interpolymer comprises 10-90 mole percent of ethylene, 10-90 mole percent of an alpha-olefin having 3 to 16 carbon atoms, and 0.1-12 mole percent of a polyene that is a non-conjugated cyclic or open-chain diene having 5 to 20 carbon atoms.

Claim 6

The molding composition of claim 4 wherein the alpha-olefin is propylene.

Claim 7

The molding composition of claim 1 wherein the polyphenylene ether resin is selected from compounds of the formula ##STR7## wherein the oxygen ether atom of one unit is connected to the benzene nucleus of the next adjoining unit, n is a positive integer and is at least 50, and each Q is a monovalent substituent selected from the group consisting of hydrogen, halogen, hydrocarbon radicals free of a tertiary alpha-carbon atom, halohydrocarbon radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus, hydrocarbonoxy radicals, and halohydrocarbonoxy radicals having at least two carbon atoms between the halogen atom and the phenyl nucleus.

Claim 8

The molding composition of claim 1 wherein the alkenyl aromatic resin is prepared from a monomer selected from the group consisting of styrene, α-methylstyrene, bromo-styrene, chloro-styrene, divinylbenzene, vinyl naphthalene, and vinyltoluene.

Claim 9

The molding composition of claim 1 wherein said composition contains a mineral filler comprised of hydrated aluminum silicate.

Claim 10

The molding composition of claim 1 wherein said composition contains from about 5 to 20 parts by weight of aluminum silicate.

Claim 11

The molding composition of claim 1 wherein said composition includes a flame-retardant amount of a flame-retardant additive.

Claim 12

The molding composition of claim 10 wherein said flame-retardant is a halogenated organic compound, a halogenated organic compound in admixture with an antimony compound, elemental phosphorus, a phosphorus compound, compounds containing phosphorus-nitrogen bonds, or a mixture of two or more of the foregoing.

Claim 13

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin and (b) from about 99 to 1 parts by weight of an alkenyl aromatic resin modified with a rubbery interpolymer which comprises 10-90 mole percent of ethylene, 10-90 mole percent of an alpha-olefin having 3 to 10 carbon atoms, and 0.1-12 mole percent of a polyene that is a non-conjugated cyclic or open-chain diene having 5 to 10 carbon atoms, wherein the improvement comprises the molding composition containing about 50 or less parts by weight of aluminum silicate, based on (a) plus (b).

Claim 14

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin and (b) from about 99 to 1 parts by weight of an alkenyl aromatic resin modified with a rubbery interpolymer which comprises 10-90 mole percent of ethylene, 10-90 mole percent of an alpha-olefin having 3 to 10 carbon atoms, and 0.1-12 mole percent of a polyene that is a non-conjugated cyclic or open-chain diene having 5 to 10 carbon atoms, wherein the improvement comprises the molding composition containing about 50 or less parts by weight of aluminum silicate, based on (a) plus (b).

Claim 15

The molding composition of claim 12 wherein said polyphenylene ether resin is poly(2,6-dimethyl-1,4-phenylene) ether.

Claim 16

The molding composition of claim 12 wherein the polyene is propylene.

Claim 17

The molding composition of claim 11 wherein said alkenyl aromatic resin is styrene and said rubbery interpolymer is present at a ratio between 4:1 and 25:1 by weight of styrene to rubbery interpolymer.

Claim 18

The molding composition of claim 12 wherein said rubbery interpolymer comprises 10-90 mole percent of ethylene, 10-90 mole percent of propylene, and 0.1-12 mole percent of 5-ethylidene-2-norbornene.

Claim 19

The molding composition of claim 12 wherein said rubbery interpolymer comprises 10-90 mole percent of ethylene, 10-90 mole percent of propylene, and 0.1-12 mole percent of 1,4-hexadiene.

Claim 20

The molding composition of claim 12 wherein said rubbery interpolymer comprises 10-90 mole percent of ethylene, 10-90 mole percent of propylene, and 0.1-12 mole percent dicylcopentadiene.

Claim 21

The molding composition of claim 12 wherein the composition contains from about 5 to 20 parts by weight of mineral filler.

Claim 22

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin; (b) from about 99 to 1 parts by weight of an alkenyl aromatic resin modified with a rubbery interpolymer which comprises 10-90 percent of ethylene, 10-90 mole percent of an alpha-olefin having 3 to 10 carbon atoms, and 0.1-12 mole percent of a polyene that is a non-conjugated cyclic or open-chain diene having 5 to 10 carbon atoms; and (c) a flame-retardant amount of a flame-retardant additive, wherein the improvement comprises the molding composition comprising about 50 or less parts by weight of aluminum silicate, based on (a) plus (b).

Claim 23

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin; (b) from about 99 to 1 parts by weight of an alkenyl aromatic resin modified with a rubbery interpolymer which comprises 10-90 percent of ethylene, 10-90 mole percent of an alpha-olefin having 3 to 10 carbon atoms, and 0.1-12 mole percent of a polyene that is a non-conjugated cyclic or open-chain diene having 5 to 10 carbon atoms; and (c) a flame-retardant amount of a flame-retardant additive, wherein the improvement comprises the molding composition comprising about 50 or less parts by weight of aluminum silicate, based on (a) plus (b).

Claim 24

The molding composition of claim 18 wherein said flame-retardant additive is a halogenated organic compound, a halogenated organic compound in admixture with an antimony compound, elemental phosphorus, a phosphorus compound or compounds containing phosphorus-nitrogen bonds, or a mixture of two or more of the foregoing.

Claim 25

The molding composition of claim 20 wherein said flame-retardant additive comprises a mixture of an organic bromine-containing compound with antimony oxide.

Claim 26

The molding composition of claim 20 wherein said flame-retardant additive is triphenylphosphate.

Claim 27

The molding composition of claim 20 wherein said flame-retardant additive is comprised of a mixture of triaryl phosphates wherein one or more aryl groups are substituted by one or more isopropyl groups.

Claim 28

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin and (b) from about 99 to 1 parts by weight of a rubber-modified alkenyl aromatic resin, wherein the improvement comprises the molding composition containing about 50 or less parts by weight of hydrated aluminum silicate, based on (a) plus (b).

Claim 29

An improved thermoplastic molding composition which comprises: (a) from about 1 to 99 parts by weight of a polyphenylene ether resin and (b) from about 99 to 1 parts by weight of a rubber-modified alkenyl aromatic resin, wherein the improvement comprises the molding composition containing about 50 or less parts by weight of hydrated aluminum silicate, based on (a) plus (b).

Claim 30

The molding composition of claim 1 wherein the aluminum silicate is fine size, delaminated, hydrated aluminum silicate.

Claim 31

The molding composition of claim 25 wherein said composition includes a flame-retardant amount of a flame-retardant additive.

Claim 34

The method of claim 28 wherein the aluminum silicate is hydrated aluminum silicate.

Claim 35

The method of claim 28 wherein the aluminum silicate is fine size, delaminated, hydrated aluminum silicate.