Process for the preparation of a polythiol polymer, sealant composition and sealant
申请人:PHILLIPS PETROLEUM COMPANY
公开号:EP0056066A1
公开(公告)日:1982-07-21
A sealant composition based on a mercaptan-terminated liquid polymer, fillers, plasticizer, and curing agent wherein the liquid mercaptan-terminated polymer employed is prepared from a mercapto acid or mercapto acid ester and a polyoxypropylene glycol, the polyoxypropylene glycol having been end-capped with ethylene oxide prior to esterification to give primary alcohol terminal groups. The cured sealant based on the ethylene oxide-end capped polymer exhibits a non-tacky surface, whereas a cured sealant based on a propylene oxide end-capped glycol exhibits a tacky surface.
The invention relates to a stabilizer for organic materials, which are liable to oxidative and/or thermal decomposition under influence of actinic irradiation of formula 1, wherein R is hydrogen or a methyl group R₁ and R₂, which may be the same, or different represent a tertiary alkyl group having 4-8 C-atoms, R₃ is hydrogen or a methyl group, n = 2 and A a polyol having 3 to 6 C-atoms or a di-polyol containing 6-12 C-atoms.
本发明涉及一种用于有机材料的稳定剂,这些材料在光照影响下容易氧化和/或热 分解,其式 1 中 R 是氢或甲基,R₁ 和 R₂(可以相同,也可以不同)代表具有 4-8 个 C 原子的叔烷基,R₃ 是氢或甲基,n = 2 和 A 是具有 3-6 个 C 原子的多元醇或含有 6-12 个 C 原子的二元醇。
OZONIDE REDUCING AGENT
申请人:OTSUKA KAGAKU KABUSHIKI KAISHA
公开号:EP0686613A1
公开(公告)日:1995-12-13
An ozonide reducing agent to be used in the ozonolysis of organic compounds, which has a wide application area and is industrially safe, inexpensive, and easy to aftertreat. The agent is a compound bearing a sulfur atom and, bonded thereto, two hydrocarbon radicals substituted by polar functional groups.