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:
Jul. 28, 2026
Filed:
Mar. 09, 2021
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Takahito Oki, Takasaki, JP;
Yoshinori Inokuchi, Takasaki, JP;
Shunji Aoki, Annaka, JP;
Tsuneo Kimura, Annaka, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A polyether-polysiloxane crosslinked rubber spherical particle including an addition-reaction product of a composition containing: (A) a polyether having at least two aliphatic unsaturated groups per molecule; (B) an organohydrogenpolysiloxane shown by the following formula (1), where 0<l≤1000, 2≤m≤1000, 0≤n≤1000, Rrepresents a hydrogen atom, a monovalent hydrocarbon group having 1 to 12 carbon atoms that is unsubstituted or is substituted with a halogen atom, or an alkoxy group, and Rrepresents a monovalent hydrocarbon group having 1 to 20 carbon atoms, the organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule; and (C) a hydrosilylation-reaction catalyst. This can provide rubber spherical particles and composite particles that exhibit excellent dispersibility in an aqueous composition and exhibit degradation characteristics in response to external stimuli; and methods for manufacturing the particles.