Molding compositions based on linear, high-molecular weight polyesters
AssigneeHuels Aktiengesellschaft
InventorsMichael Droscher, Christian Gerth, Harald Sturm
Life of this patent
Estimating the term…
Abstract
Polyesters are modified by adding an aqueous latex having a solids content of <50% by weight. The synthetic resin contained in the latex has a glass transition temperature of .ltoreq.0.degree. C. and contains 0.1-20 mol-% of functional groups.
Claims21
A method of increasing the impact strength of a molding composition comprising admixing an aqueous latex of a synthetic resin having a solids content of 35% by weight or less with a linear high-molecular weight polyester in melt form under strong shear forces effective to form the mixture, wherein said synthetic resin is a copolymer having 0.1-20 mol-% of functional groups that are able to form ester or amide linkages, said copolymer being obtained by addition polymerization of unsaturated monomers, and said composition having a latex proportion, calculated as solid matter, of 1-400 parts by weight, based on 100 parts by weight of polyester.
Dependencies are inferred from the claim text.