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:
Dec. 30, 2025
Filed:
Sep. 30, 2020
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Tomoyuki Goto, Annaka, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
An aqueous coating additive containing a polyether-modified siloxane represented by an average composition formula (1): (RSiO)(RR'SiO)(RSiO)(RR′SiO)(RSiO)(SiO). 'R''s each represent an organic group selected from groups represented by —CH—O—(CHO)(CHO)—R. The R′ groups satisfy expression (I): 5≤{(molecular weight of the —CHO— moiety)/(molecular weight of an entire polyether-modified siloxane)}×20≤10; and expression (II): {(molecular weight of the —CHO— moiety)/(molecular weight of the —CHO— moiety)}≤1.0. This provides an additive for an aqueous coating and an aqueous coating composition that have little environmental impact and that provide excellent antifouling performance.