ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,594, issued on Dec. 30, was assigned to SHIN-ETSU CHEMICAL Co. LTD. (Tokyo).
"Aqueous coating additive, aqueous coating composition, and coating agent" was invented by Tomoyuki Goto (Annaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous coating additive containing a polyether-modified siloxane represented by an average composition formula (1): (R3SiO1/2)a(R2R'SiO1/2)a'(R2SiO2/2)b(RR'SiO2/2)b'(RSiO3/2)c(SiO4/2)d. "R"'s each represent an organic group selected from groups represented by -CqH2q-O-(C2H4O)e(C3H6O)f-R1. The R' groups satisfy expression (I): 5less than equal to{(molecular weight of the -C2H4O- moiety)/(molecular weight of...