The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Apr. 20, 2015
Dow Corning Toray Co., Ltd., Tokyo, JP;
Hideko Maeshima, Chiba, JP;
Seiki Tamura, Chiba, JP;
Dow Corning Toray Co., Ltd., Tokyo, JP;
Abstract
A production method of a liquid high-purity polyhydric alcohol derivative-modified silicone or a composition thereof is disclosed. The method comprises: a capturing step 1) of bringing into an impurity-containing composition containing a liquid polyhydric alcohol derivative-modified silicone and hydrophilic impurities originating from a polyhydric alcohol derivative, the polyhydric alcohol derivative being a hydrophilic modifier of the polyhydric alcohol derivative-modified silicone, into contact with solid particles capable of capturing the hydrophilic impurities, and then capturing the hydrophilic impurities with the solid particles; and a separating step 2) of separating the polyhydric alcohol derivative-modified silicone and the solid particles. The method is useful for production of the liquid high-purity polyhydric alcohol derivative-modified silicone and the composition thereof on a commercial scale.