Biologically-degradable polyester mixture

摘要

The invention relates to biodegradable polyester mixture, comprising
i) from 5 to 80% by weight, based on the total weight of components i to ii, of at least one polyester based on aliphatic and aromatic dicarboxylic acids and on aliphatic dihydroxy compounds, andii) from 20 to 95% by weight, based on the total weight of components i to ii, of at least one biodegradable homo- or copolyester selected from the group consisting of polylactide, polycaprolactone, polyhydroxyalkanoates, and polyesters composed of aliphatic dicarboxylic acids and of aliphatic diols, andiii) from 0.1 to 15% by weight, based on the total weight of components i to ii, a) of a copolymer containing epoxy groups and based on styrene, acrylate, and/or methacrylate, b) of a bisphenol A epoxide, or c) of a fatty acid amide or fatty acid ester or natural oil containing epoxy groups; andiv) from 0 to 15% by weight of additive; andv) from 0 to 50% by weight of inorganic or organic filler,

and also to processes for their preparation and a method for their use.

主权项

1. A biodegradable polyester mixture, comprising
i) from 5 to 80% by weight, based on the total weight of i) and ii), and component i) comprises
A) an acid component composed of
a1) from 40 to 60 mol % of succinic acid, adipic acid, sebacic acid, their ester-forming derivatives, or mixtures thereof; anda2) from 40 to 60 mol % of terephthalic acid or its ester-forming derivatives;wherein the sum of the molar percentages of a1) and a2), equal 100%; andB) is 1,4-butanediol or 1,3-propanediol and
D) optionally a component selected from the group consisting of
d1) at least one compound having at least three groups capable of ester formation;d2) at least one isocyanate;d3) at least one divinyl ether; andd4) mixtures thereof: and ii) from 20 to 95% by weight, based on the total weight of i) and ii), of polyhydroxybutyrate or polyhydroxybutyrate-co-valerate; and iii) from 0.1 to 15% by weight, based on the total weight of i) and ii), of a copolymer composed of styrene and glycidyl (meth)acrylates; and iv) from 0 to 15% by weight of additive; and v) from 0 to 50% by weight of inorganic or organic filler.