Plasticised polyvinyl chloride
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Abstract
Esters of cyclohexane polycarboxylic acids are used as plasticisers for polyvinyl chloride to enable products with comparable mechanical properties to be obtained using less polyvinyl chloride. Use of these esters also produces formulations with increased stability to ultra-violet light, improved low temperature properties, lower viscosity and improved processability as well as reduced smoke on burning. The esters of cyclohexane polycarboxylic acids may be used alone or in admixture with other plasticisers when the esters of cyclohexane polycarboxylic acids may act as viscosity depressants. Fast fusing plasticisers may also be included. The formulations are particularly useful in the production of a range of goods from semi-rigid to highly flexible materials and are particularly useful in the production of medical materials such as blood bags and tubing.
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Citations
55 Claims
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1-29. -29. (Cancelled)
- 30. An article of manufacture selected from medical tubing, blood bags, toys, films, bottle caps, and materials used for food contact comprising a polyvinyl chloride plasticized with a plasticizer comprising one or more esters of cyclohexane polycarboxylic acids.
- 40. A method for depressing the viscosity of a plastisol composition comprising providing a plastisol composition and admixing an ester of a cyclohexane carboxylic acid.
- 45. A plasticized polyvinyl chloride composition comprising polyvinyl chloride and from 20 to 200 phr of a mixture of (i) one or more plasticizers that are not esters of a cyclohexane carboxylic acid and (ii) one or more esters of a cyclohexane carboxylic acid in which the mixture contains greater than 5 wt % based on the total plasticizer of the ester of the cyclohexane carboxylic acid.
- 50. A multilayer article in which at least two adjacent layers comprise plasticised polyvinyl chloride wherein the plasticizer in one of said two adjacent layers contains an ester of a cyclohexane polycarboxylic acid.
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55. A polyvinyl chloride composition comprising 100 parts of polyvinyl chloride and from 20 to 200 parts of a plasticizer comprising an ester of a cyclohexane carboxylic acid and containing in addition from 5 to 30 parts per hundred parts of polyvinyl chloride of a fast-fusing plasticizer.
Specification