Ethylenically unsaturated macromonomers

摘要

An ethylenically unsaturated macromonomer is disclosed, being the reaction product of

i) the adduct formed from the reaction of an unsaturated non-mineral oil reacted with an enophile having an acid, ester or anhydride moiety and

ii) an ethylenically unsaturated chain extender material having at least two moieties reactive with the acid, ester or anhydride moiety of the enophile. The oil may be palm oil or sunflower oil, the enophile may ba maleic anhydride and the chain extender may be glycerol methacrylate. The objective is to produce polymer binders, e.g. for coatings, that are based at least in part on renewable feedstock such as plant or animal material.