Polymeric materials
AssigneeColormatrix Holdings, Inc.
InventorsJohn Goulbourn, Andrew Stuart Overend, Christine Leeming
Life of this patent
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Abstract
A method of introducing an additive into a polymeric material comprises using a liquid formulation comprising an additive, for example a colourant, and a vehicle comprising an aliphatic or aromatic tri- or di-carboxylic acid covalently linked by ester bonds to two or more chains. The method involves contacting the liquid formulation with the polymeric material in a melt processing apparatus. The cavity transfer mixer may be used in the process. A fibre is suitably subsequently produced.
Claims21
A method of introducing an additive into a polymeric material comprising:
- a) selecting a liquid formulation comprising an additive and a vehicle comprising an aliphatic or aromatic tri- or di-carboxylic acid covalently linked by ester bonds to two or more chains;
- b) contacting the liquid formulation with said polymeric material in a melt processing apparatus.
A liquid formulation for addition to a polymeric material, said liquid formulation comprising a vehicle and an additive, said vehicle comprising an aliphatic or aromatic tri or di-carboxylic acid covalently linked by ester bonds to two or more chains.
(canceled)
A method of introducing an additive into a polymeric material comprising:
- A) selecting a liquid formulation comprising an additive and a vehicle comprising an aliphatic or aromatic tri- or di-carboxylic acid covalently linked by ester bonds to two or more chains;
- B) contacting the liquid formulation with said polymeric material in a melt processing apparatus;
- wherein said chains comprise linear or branched alkyl groups with between 5 and 15 carbon atoms which are unsubstituted;
- or said chains comprise polyalkoxylated fatty alcohol chains;
- or said chains comprise citric acid esters;
- wherein said carboxylic acid is of general formula:
- where R9, R10 and R11 independently represent a hydrogen atom, an ester group or an optionally-substituted alkyl group;
- wherein downstream of the point of contact of liquid formulation and polymeric material there is provided a spinning means for spinning the polymeric material to define fibres;
- and
- wherein said polymeric material comprises a polyester.
Dependencies are inferred from the claim text.