发明授权
US3939138A Radical polymerization initiator andd process for its preparation 失效
自由基聚合引发剂及其制备方法

Radical polymerization initiator andd process for its preparation
摘要:
A radical polymerization initiator comprising as an active ingredient a hydroperoxide of disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt.The initiator is prepared by contacting disproportionated or hydrogenated rosin acid or its alkali metal or ammonium salt with molecular oxygen in water or an organic solvent at a temperature of 0.degree. to 150.degree.C. to form its hydroperoxide.
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