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:
Feb. 24, 1998
Filed:
Oct. 22, 1996
Takaki Aoyama, Chiba Prefecture, JP;
Toyohiko Yamadera, Chiba Prefecture, JP;
Dow Corning Toray Silicone Co., Ltd., Tokyo, JP;
Abstract
A method for the preparation of a silicone rubber composition, a liquid polydiorganosiloxane (A), finely powdered silica (B), liquid polyorganosiloxane (C) and water (D) are introduced continuously into the raw material inlet of a biaxial continuous extruding and mixing machine. In the present method the liquid polydiorganosiloxane is introduced into the raw material inlet through the outer lumen of a double lumen tube and the finely powdered silica is introduced into the raw material inlet through the inner lumen of the double lumen tube. As a result, the finely powdered silica can be introduced rapidly without being scattered to the surrounding area and superior mixing of the two substances is achieved.