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US 4,396,740 AGranted
Scavenging of residual acrylonitrile monomer in ABS latex
AssigneeBorg-Warner Chemicals, Inc.
InventorMary E. Wozny
Life of this patent
Estimating the term…
Abstract
The addition of aryl methanamines such as m-xylylenediamine to polymer latices which contain residual acrylonitrile monomer is markedly effective in reducing the measurable free acrylonitrile contents of latices.
Claims7
A process for reducing the residual acrylonitrile monomer in an aqueous medium containing said monomer comprising adding to said medium an aryl methanamine.
A process for reducing the residual acrylonitrile monomer in an aqueous dispersion of an acrylonitrile polymer comprising adding to said medium at least 0.2 mole of an aryl methanamine per m of residual acrylonitrile monomer.
Dependencies are inferred from the claim text.