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Primary Examiner: Levin, Stanford M.
Assistant Examiner:
Attorney: Murphy; Michael J.

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Title: Chemically reducing residual acrylonitrile monomer in nitrile polymers and shaped packaging materials formed therefrom

Abstract: A process for reducing free acrylonitrile monomer in nitrile polymers during melting which involves having an effective amount of an unsaturated fatty acid or a glyceride of oleic, linoleic and linolenic acid or compounds such as safflower and linseed oils as an acrylonitrile scavenger in admixture with the polymer during melting. Shaped products such as preforms, containers, film, sheet, etc., formed from such melt are well suited for packaging food, beverages, pharmaceuticals, cosmetics, etc., in that residual acrylonitrile monomer in the walls of such products is minimal.

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Inventors: Gomez, I. Luis (Longmeadow, MA, US)
Tokas, Edward F. (West Hatfield, MA, US)

Application Number: 957295
Filing Date: 1978-11-02
Publication_date: 1980-10-14
Assignee: Monsanto Company (St. Louis, MO)
Primary Class(es): 264/211 215/400, 264/328.14, 264/500, 426/106, 524/313, 524/322, 528/486
Other Classes:
US Patent Ref:

3438971	Apr, 1969	Walker	260/23.
3863014	Jan, 1975	Mottus	526/332.
3900120	Aug, 1975	Sincock	215/1.
3931074	Jan, 1976	Gomez	426/106.
3974297	Aug, 1976	Ott	264/211.

Other Refs: Other References: "The Chemistry of Acrylonitrile," American Cyanamid Co., Second Ed., (1959), pp. 13, 14, 77.