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US 6,437,032 B1Granted
Compound bearing an urethane linkage, which is an addict of ricinoleic esters and an isocynate, useful as a plasticizer for polyvinyl chloride (PVC) and a process for preparing such compound
AssigneeCsir
InventorsSrinivasan Subbagiri Ramaswamy Iyengar, Raut Kundalik Ganpat, Saxena Prabhat Kumar, Sivaram Swaminathan
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Abstract
A novel compound bearing urethane linkage of formula as shown herebelow, which is an adduct of ricinoleic ester and isocyanate, useful as a plasticizer for polyvinylchloride (PVC) and a process for the preparing the compound bearing urethane linkage by reacting fatty acid esters bearing hydroxyl groups with an organic isocyanate in the presence of a catalyst at a temperature in the range of 30°-100° C.
Claims5
A process for the preparation of a compounded PVC which comprises mixing a compound of the formula 1
- wherein Ar is selected from the group consisting of
- with PVC at a temperature in the range 120 to 150° C. in the presence of a stabilizer.
Dependencies are inferred from the claim text.