Methods of Production of Novel Castor Oil Derivatives

This research carried out at the National Center for Scientific Research, France discusses the production methods of the castor oil derivatives.

There exist different approaches for synthesizing polymers based on vegetable oils. The first most widespread one consists of considering triglycerides as base materials, the latter may be epoxidized and for example alcoholized or hydroformylated in order to make them functional and polymerizable.

An oil is a mixture of triglycerides (triesters) formed by condensation of fatty acids and of glycerol. The high number of fatty acid types (up to 24) present in each fat and the multiple possibilities of their combinations with glycerol molecules have the result that the fats are highly complex mixtures of compounds, the properties of which vary from one oil to another. The nature of the triglycerides may therefore vary within a same oil.

The reactive sites present in a triglyceride are mainly double bonds and ester functions. The reactivity of double bonds allows introduction of hydroxyl functions, thereby allowing access to polyhydroxylated monomers. Nevertheless, it is impossible to obtain triglycerides having perfectly defined structures and functionalities.

The present study provides a method for preparing compounds from vegetable oil, with which the aforementioned drawbacks may be overcome. The research work also attempts to provide a method for preparing compounds derived from vegetable oil, comprising the use of catalysts better fitting environmental expectations than most of the homogeneous catalysts used and which limit the secondary reactions.

Production of Polypropylene Glycol Polyricinoleate, Butanediol Polyricinoleate,Butanediol Polyricinoleate, Butanediol Esters, Butanediol Diesters , Propanediol Esters have been discussed.

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