US 9,390,744 B2 · Polycarbonate composition to produce optical quality products with high quality and good processability

Abstract

The present disclosure relates to thermoplastic compositions, methods of making thermoplastic compositions, and articles made from thermoplastic compositions. The disclosed compositions comprise a polycarbonate polymer, a triacylglyceride release agent, and a monoacylglyceride release agent. In an embodiment, the thermoplastic composition comprises: greater than 90 weight percent based on the total weight of the composition of a melt polycarbonate polymer; a triacylglyceride release agent; and a monoacylglyceride release agent. The total amount of triacylglyceride release agent and the monoacylglyceride release agent is 0.01 to 0.5 weight percent based on the total weight of the composition.

Claims13

Dependent claims

An article formed from a composition, wherein the composition comprises:

glycerol tristearate, glycerol monostearate, and greater than 90 weight percent based on the total weight of the composition of a melt polycarbonate polymer, wherein the melt polycarbonate polymer is made by a melt polymerization process;
wherein a total amount of glycerol tristearate and the glycerol monostearate is 0.01 to 0.1 weight percent based on a total weight of the composition;
wherein a ratio of the glycerol monostearate to the glycerol tristearate is 1:1.5 to 1:3.5;
and
wherein the article has an article average static charge of −3 to 0 kV as determined by averaging the static charge of a 1500th to a 2500th article formed.

2 more elements

Dependencies are inferred from the claim text.

Polycarbonate composition to produce optical quality products with high quality and good processability

Life of this patent

Polycarbonate composition to produce optical quality products with high quality and good processability

Life of this patent

Abstract

Claims13