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:
Sep. 15, 2026
Filed:
Jul. 13, 2021
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Shoji Okabe, Annaka, JP;
Takahito Oki, Annaka, JP;
Yoshinori Inokuchi, Annaka, JP;
Shunji Aoki, Annaka, JP;
Tsuneo Kimura, Annaka, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
Provided are polysiloxane structure-containing rubber particles and composite particles having a high dispersibility and degradability; and production methods thereof. The rubber particles are comprised of a copolymer having a polyester structure and an organopolysiloxane structure, wherein the copolymer is a hydrosilylation crosslinked product of (A) a polyester having at least two aliphatic unsaturated groups per molecule; and (B) an organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms per molecule. The composite particles are those with the surfaces of these rubber particles being coated with polyorganosilsesquioxane or silica.