Method of improving the color of tall oil rosin ester

C - Chemistry – Metallurgy – 09 – F

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C09F 7/10 (2006.01) C08L 23/02 (2006.01) C09F 1/04 (2006.01) D06M 15/01 (2006.01) D21H 17/62 (2006.01)

Patent

CA 1274822

METHOD OF IMPROVING THE COLOR OF TALL OIL ROSIN ESTERS Abstract of Disclosure Disclosed is a method of improving the color of tall oil rosin esters comprising the sequential steps of (a) heating and stirring a tall oil rosin in the presence of a Lewis acid catalyst to form a mixture, (b) distilling the mixture to provide a tall oil rosin distillate, and (c) esterifying the tall oil rosin distillate with a polyol in the presence of a phenol sulfide compound. The improved tall oil rosin esters produced thereby are useful in the manufacture of a variety of products, such as paper and textile sizes, plasticizers for polyolefin films, paints, varnishes, hot melt adhesives and pressure sensitive adhesives.

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