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:
Aug. 14, 1984
Filed:
Aug. 17, 1983
Nobuyuki Terae, Gunma, JP;
Akira Abe, Gunma, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A very simple and versatile method is proposed for the preparation of an aqueous emulsion of silicone in which an organochlorosilane or a mixture of organochlorosilanes is added dropwise into an aqueous medium in the presence of a surface active agent or, preferably, into an aqueous medium containing a surface active agent in advance followed by or with concurrent removal of the hydrogen chloride from the mixture by adding an alkaline neutralizing agent or by use of the techniques of ion exchange so that a stable aqueous emulsion can be produced in the aqueous medium at the same time as the organochlorosilane or silanes are hydrolyzed followed by the dehydration condensation of the resultant silanol compounds to form an organopolysiloxane in situ by the catalytic activity of the hydrogen chloride formed by the hydrolysis.