Polymerisation method by dielectric heating of unsaturated...

C - Chemistry – Metallurgy – 08 – F

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C08F 20/62 (2006.01) C08F 36/22 (2006.01) C10M 143/00 (2006.01) C10M 145/10 (2006.01)

Patent

CA 2348722

This invention relates to a process of polymerization of unsaturated fatty acids, esters of unsaturated fatty acids, unsaturated hydrocarbons or unsaturated derivatives of these products by dielectric heating, as well as to the polymers obtained and uses of these polymers. It is claimed for the invention that the polymerization process is characterized by the fact that the reagent or reagent mixture is subjected to dielectric heating, that is, heating below frequencies ranging from around 30 GHz to around 3 MHz (radio or microwave frequencies) to effect polymerization. The process is conducted with or without catalysts; the reagents are fatty acids, fatty acid esters, plant or animal oils, hydrocarbons of the polyterpene or polyisobutene type, or derivatives of these products including at least one unsaturated substance, used either alone or in a mixture.

La présente invention concerne un procédé de polymérisation d'acides gras insaturés, d'esters d'acides gras insaturés, d'hydrocarbures insaturés ou de dérivés insaturés de ces produits par chauffage diélectrique, ainsi que les polymères obtenus et utilisations de ces polymères. Selon l'invention, le procédé de polymérisation est caractérisé par le fait que le réactif ou le mélange réactionnel est soumis à un chauffage diélectrique c'est-à-dire sous fréquences comprises entre environ 30 GHz et environ 3 MHz (fréquences radio ou micro-ondes) pour opérer la polymérisation; il est mis en oeuvre avec ou sans catalyseurs; les réactifs sont des acides gras, des esters d'acides gras, des huiles végétales ou animales, des hydrocarbures du type polyterpènes ou polyisobutène, ou encore les dérivés de ces produits, comprenant au moins une insaturation, utilisés seuls ou en mélange.

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