METHOD FOR ISOLATING ABS GRAFT COPOLYMERS
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United States of America Patent
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Jun 17, 2015
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Jun 25, 2014
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Abstract
A process for preparing an ABS graft copolymer, which comprises a step for isolating the graft copolymer B present in an aqueous dispersion by means of a precipitant which is an aqueous solution of a mixture of MgSO4, Al2(SO4) and/or H2SO4, is described. The ABS molding compositions obtained have an improved yellowness index and high surface gloss.
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