公开(公告)号：US20220212372A1

公开(公告)日：2022-07-07

申请号：US17601659

申请日：2020-02-19

申请人： SHIN-ETSU CHEMICAL CO., LTD.

发明人： Yuta HAMAJIMA ,  Shunji AOKI ,  Nobuaki TAKAHASHI

IPC分类号： B29C33/64 ,  B29C37/00 ,  C08L83/04

摘要： A release agent composition for tire-molding contains: (A) 100 parts by mass of an organopolysiloxane containing at least two hydroxy groups bonded to a silicon atom in one molecule and having a viscosity at 25° C. of 10,000 mPa·s or higher; (B) 10 to 100 parts by mass of an organohydrogenpolysiloxane containing at least two hydrogen atoms bonded to a silicon atom in one molecule relative to 100 parts by mass of the component (A); (C) 10 to 10,000 parts by mass of water relative to 100 parts by mass of the component (A); and (D) 2 to 70 parts by mass of a polyvinyl alcohol relative to 100 parts by mass of the component (A). The release agent composition for tire-molding is excellent in release. Molding and vulcanizing tires repeatedly in succession a larger number of times without applying a release agent after once applying a release agent is realized.