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US 4,400,484 AGranted
Esters as processing aids for olefinic nitrile copolymers
AssigneeThe Standard Oil Company
InventorsBrandford E. Giddings, Richard J. Jorkasky, II, Kim L. Thornton
Life of this patent
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Abstract
It has been found that the addition of small amounts of a benzoate or acetate ester of a polyfunctional hydroxy containing compound to an olefinic nitrile copolymer composition greatly increases the flowability and processibility of these thermoplastic copolymers.
Claims7
A composition which comprises an intimate mixture of (1) a copolymer produced by the polymerization of a major proportion of a monounsaturated nitrile and a minor portion of another monovinyl monomer component copolymerizable therewith in the presence of a preformed diene rubber;
- and (2) a lubricant selected from the group consisting of an diacetate ester of hydroquinone or an diacetate ester of resorcinol.
Dependencies are inferred from the claim text.