Acrylated maleic-modified rosin ester and method of preparation

Details Acrylated maleic-modified rosin ester and method of preparation Acrylated maleic-modified rosin ester and method of preparation

2011-04-12

2011-04-12

Seidleck, James (Department: 1765)

Chemistry: natural resins or derivatives; peptides or proteins;

Natural resins or derivatives

Tall oil or derivative used as starting material in process,...

C530S215000, C530S210000

Reexamination Certificate

active

07923531

ABSTRACT:
A two-step method for introducing acrylic functions into high molecular weight natural resins, under mild conditions, without the risk of gellation, wherein an acrylated natural resin ester is prepared by esterifying one or more of the sterically hindered hydroxy groups of the natural resin ester in an inert solvent with a 3-halopropionic acid, to form a 3-haloproprionate ester of the natural resin ester and dehydrohalogenated the 3-halopropionate ester by reacting it with an organic base.

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patent: WO-87/04448 (1987-07-01), None

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