Antistatic styrene/acrylonitrile-type interpolymer compositions

Claim 2

interpolymers formed by polymerizing a monovinyl aromatic compound, an alkene nitrile compound, and a conjugated alkadiene monomer;

Claim 3

mechanical blends of (1) or (2) or mixtures of (1) and (2) with a preformed diene polymer rubber produced by polymerizing at least one conjugated alkadiene monomer, optionally in the presence of a monovinyl aromatic compound or an alkene nitrile or a mixture of a monovinyl aromatic compound and an alkene nitrile;

Claim 4

A composition according to claim 2 in which said vinyl aromatic compound is styrene.

Claim 5

A composition according to claim 1 in which the conjugated alkadiene is butadiene.

Claim 6

graft blends of (1) or (2) or mixtures of (1) and (2) produced by polymerizing the monomers used to make such interpolymers in the presence of a preformed diene polymer as characterized in (3) above; and

Claim 7

mixtures of at least two of the foregoing; said monovinyl aromatic compound being selected from the group consisting of styrene, alkyl-substituted styrenes, halogen substituted styrenes, mixed halogen plus alkyl-substituted styrenes, vinyl naphthalene, vinyl anthracene and mixtures of the foregoing; said alkene nitrile compound being selected from the group consisting of acrylonitrile, methacrylonitrile, ethacrylonitrile and mixtures thereof; b. at least one amine of the formula R-N((CH2CHR''-O)mH)nH2 -n where, R is a monovalent aliphatic hydrocarbon group containing from about six through 22 carbon atoms, R'' is selected from the group consisting of hydrogen and methyl, m is an integer of from one through eight, n is the integer 1 or 2, and c. polypropylene glycol having a molecular weight of from 100 through 10,000, and d. said composition containing from about 0.001 to 30 parts by weight of said amine, from about 0.001 to 10 parts by weight of said polypropylene glycol with the balance up to 100 weight percent being said interpolymer system in any given composition.

Claim 8

A composition according to claim 1 in which in the formula of the amine antistatic additive the group R contains from eight to 18 carbon atoms.

Claim 9

A composition according to claim 5 in which R is derived from a coconut oil.

Claim 10

A composition according to claim 1 in which R'' is hydrogen, m is 1 and n is 2.

Claim 11

A composition according to claim 1 in which the amount of amine present is between about 0.5 and 4 percent.

Claim 12

A composition according to claim 1 in which the polypropylene glycol has a molecular weight between 100 and 5,000.

Claim 13

A composition according to claim 1 in which the amount of polypropylene glycol present is between about 0.1 and 0.8 percent.

Claim 14

A composition of claim 1 containing in addition up to about 4 weight percent of a pigment or dye.