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US 10,240,021 B2Granted
Polyester resins with particular carbon black as a reheat additive in the production of stretch blow molded bottles and containers
AssigneeDak Americas LLC
InventorsDavid Eugene Thompson, Helen Jane Codd
Life of this patent
Estimating the term…
Abstract
Provided is a polyester or co-polyester resin used in the manufacture of preforms suitable for making bottles and containers containing a carbon black, particularly lamp black carbon black, with a primary particle size in a range of from 100 to 160 nanometers.
Claims14
A preform or bottle made from a resin composition comprising:
- (I) a co-polyester resin comprising (i) a dicarboxylic acid component comprising terephthalic acid, from 5 to 30 mol % of isophthalic acid, and from 2 to 10 mol % of a naphthalene dicarboxylic acid, based on the total number of moles of dicarboxylic acid units in the co-polyester resin, and (ii) a diol component;
- (II) a carbon black with an average primary particle size in a range of 102 to 160 nanometers, wherein the carbon black is lampblack;
- and
- (III) at least one resin selected from the group consisting of a polyolefin resin and a polycarbonate resin,
- wherein the co-polyester resin does not comprise an antimony catalyst, and
- wherein the carbon black is present in the resin composition at a concentration of from 1 ppm to 20 ppm by weight of the resin composition.
3 more elements
A method of producing a preform,
- combining a co-polyester resin, at least one resin selected from the group consisting of a polyolefin resin and a polycarbonate resin, and a carbon black, to obtain a resin composition;
- and
- molding a resin composition into a preform,
- wherein the carbon black is lampblack and has an average primary particle size in a range of 102 to 160 nanometers,
- wherein the carbon black is present in the resin composition at a concentration of from 1 ppm to 20 ppm by weight of the resin composition,
- wherein co-polyester resin comprises (i) a dicarboxylic acid component comprising terephthalic acid, from 5 to 30 mol % of isophthalic acid, and from 2 to 10 mol % of a naphthalene dicarboxylic acid, based on the total number of moles of dicarboxylic acid units in the co-polyester resin, and (ii) a diol component, and
- wherein the co-polyester resin does not comprise an antimony catalyst.
4 more elements
A method of improving the reheat and color value L* of a preform, the method comprising:
- molding a composition into a preform,
- wherein the composition comprises a co-polyester resin, at least one resin selected from the group consisting of a polyolefin resin and a polycarbonate resin, and a carbon black,
- wherein the carbon black is lampblack and has an average primary particle size in a range of 102 to 160 nanometers,
- wherein the carbon black is present in the resin composition at a concentration of from 1 ppm to 20 ppm by weight of the resin composition,
- wherein co-polyester resin comprises (i) a dicarboxylic acid component comprising terephthalic acid, from 5 to 30 mol % of isophthalic acid, and from 2 to 10 mol % of a naphthalene dicarboxylic acid, based on the total number of moles of dicarboxylic acid units in the co-polyester resin, and (ii) a diol component, and
- wherein the co-polyester resin does not comprise an antimony catalyst.
3 more elements
Dependencies are inferred from the claim text.