Method of making silicone polyether copolymers having reduced od

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...

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528 14, 528 15, 528 31, 528 33, 556445, 525338, 525339, 525474, 525479, C08G 7704, C08F 708

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061628883

ABSTRACT:
The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.

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Derwent Abstract of JP 1135463 Dec. 1999 to Nippon Unicar.

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