Treating dispersions of acrylonitrile polymers

C - Chemistry – Metallurgy – 08 – F

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400/5211, 400/64

C08F 2/22 (2006.01) C08F 6/00 (2006.01) C08F 220/44 (2006.01) C08F 265/08 (2006.01) C08L 33/20 (2006.01)

Patent

CA 1160382

ABSTRACT OF THE INVENTION Residual acrylonitrile dissolved in acrylo- nitrile copolymers and/or water in which acrylonitrile polymers are polymerized or processed such as a latex thereof or from acrylonitrile processes can be substan- tially reduced by adding to polymer-water mixtures for example, after at least 90% of the monomers have been polymerized, additional catalyst and an amount of comonomer in excess of the amount of free acrylonitrile present.

362729

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