Process for producing thermoplastic molding compositions from polycondensation resins and aqueous latexes
AssigneeHuels Aktiengesellschaft
InventorsChristian Gerth, Michael Droscher
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Abstract
The invention relates to a process for the production of molding compositions from a thermoplastic polycondensation resin susceptible to degradation at high temperature in the presence of H.sub.2 O, to which is admixed a second synthetic resin, present as an aqueous latex, at temperatures in the range of 150.degree.-300.degree. C. and under a pressure in the range of 1-100 bar under the effect of high shear forces, for a time sufficient to provide the desired molding composition without substantially degrading the polycondensation resin.
Claims17
A process for the production of a molding composition, comprising contacting (a) an aqueous latex, said aqueous latex being prepared by a process consisting essentially of the step of polymerizing monomers by addition polymerization to form an aqueous latex consisting essentially of water and an elastomeric addition polymer, and (b) a thermoplastic polycondensation polymer susceptible to degradation by water, wherein said polycondensation polymer is a polycarbonate and said contacting is effected at sufficiently high temperatures and under sufficiently strong shear forces, for a time sufficiently brief to prevent serious degradation of the polycondensation polymer and sufficiently long to provide a substantially homogeneous molding composition.
Dependencies are inferred from the claim text.