Dispersing agents in composites
AssigneePolymers Australia Pty Limited
InventorsGraeme Moad, Li Guoxin, Jonathan Andrew Campbell, Hendrik Wermter, Rudolf Pfaendner
Life of this patent
Estimating the term…
Abstract
The present invention is directed to compositions comprising (a) a synthetic polymer, (b) a talc as a filler, wherein the talc particles have a mean particle size of from 0.4 to 25 μm, and are present in an amount of from 0.1 to 10% based on the weight of component (a) and (c) a dispersing agent which is based on a non-ionic surfactant or an amphiphilic statistical, block or comb copolymer, provided that when the synthetic polymer (a) is a polyamide, this is present in an amount of less than 55% based on the weight of (a), (b) and (c).
Claims23
A composition comprising
- (a) a synthetic polymer,
- (b) a talc as a filler, wherein the talc particles have a mean particle size of from 0.4 to 25 μm and are present in an amount of from 0.1 to 10% based on the weight of component (a) and
- (c) a dispersing agent which is based on a non-ionic surfactant or an amphiphilic statistical, block or comb copolymer;
- provided that when the synthetic polymer (a) is a polyamide, this is present in an amount of less than 55% based on the weight of (a), (b) and (c).
A process for the preparation of a synthetic polymer material which comprises melt mixing a mixture of
- (a) a synthetic polymer,
- (b) a talc as a filler, wherein the talc particles have a mean particle size of from 0.4 to 25 μm and are present in an amount of from 0.1 to 10% based on the weight of component (a) and
- (c) a dispersing agent which is based on a non-ionic surfactant or an amphiphilic statistical, block or comb copolymer;
- provided that when the synthetic polymer (a) is a polyamide, this is present in an amount of less than 55% based on the weight of (a), (b) and (c).
(canceled)
(canceled)
Dependencies are inferred from the claim text.