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US 4,069,517 AGranted
Migration-resistant plasticizer for vinyl halide polymers
AssigneeMonsanto Company
InventorPaul R. Graham
Life of this patent
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Abstract
Vinyl halide polymers containing migration-resistant polyester plasticizers are used in food and drink wrapping and containers and medical tubing and in medical devices for collecting, storing and administering body fluids.
Claims3
In a process of supplementing or replacing mammalian body organs using means comprising a vinyl chloride polymer, said polymer being in contact with said body, the improvement wherein said polymer contains a phthalate-free polyester plasticizer of the formula
- T -- G --A -- G).sub.x T
- wherein
- T represents a 2-18 carbon atom aliphatic, saturated monocarboxylic acid;
- G represents a glycol of 2 to 6 carbon atoms;
- A represents an aliphatic dicarboxylic acid of 4-10 carbon atoms;
- and
- x is an integer of from 5 to about 15.
4 more elements
Dependencies are inferred from the claim text.