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1. (WO2018076337) ONE-PART ROOM-TEMPERATURE CURABLE COMPOSITIONS ON BASIS OF ORGANOSILICON COMPOUNDS AND TITANIUM CURING CATALYSTS

Pub. No.:    WO/2018/076337    International Application No.:    PCT/CN2016/104014
Publication Date: Fri May 04 01:59:59 CEST 2018 International Filing Date: Tue Nov 01 00:59:59 CET 2016
IPC: C09J 183/04
C09J 11/06
C09J 11/04
C09K 3/10
Applicants: WACKER CHEMIE AG
SIXT, Torsten
NIE, Jian
Inventors: SIXT, Torsten
NIE, Jian
Title: ONE-PART ROOM-TEMPERATURE CURABLE COMPOSITIONS ON BASIS OF ORGANOSILICON COMPOUNDS AND TITANIUM CURING CATALYSTS
Abstract:
Provided are one-part room-temperature curable compositions (RTV-1 compositions) on the basis of organosilicon compounds which is less toxic compared to conventional compositions that contain organotin compounds and, at the same time, has excellent curing properties, a skin formation time which allows proper handling and tooling, and excellent storage stability. In particular, the present invention is directed to compositions comprising: (A) at least one organosilicon compound containing condensable groups; (B) at least one curing agent comprising a compound having the formula R'Si (OOCR")3, wherein R' is C3-C6 alkyl, and R" is the same or different and independently selected from C1-C6 alkyl; (C) at least one curing catalyst comprising an organotitanium compound; and (D) at least one filler. By using a combination of organotitanium compounds (C) with curing agents (B) the compositions show excellent curing properties, suitable skin formation time and excellent storage stability.