摘要:
Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a bismuth thiophosphoric acid diester salt.
摘要:
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Addtionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
摘要:
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Addtionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
摘要:
The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Addtionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.
摘要:
The present invention provides mononuclear aromatic diglycidyl ether epoxy resins, such as alkyl resorcinols and alkyl hydroquinones, having one or two alkyl containing, cycloalkyi containing, alkoxy containing, alkylsulfide containing, alkylsilyl containing or alkylether containing groups, two alkylamino containing groups, one N- heterocycloalkyl group, and mixtures thereof, as well as two component liquid coating compositions comprising as an epoxy component the epoxy resins, and, as a second component, a hardener. Coating compositions of the present invention provide low viscosity coating compositions even at 100% solids and enable the use of epoxy coating compositions in remote field applications.
摘要:
A process for the telomerization of butadiene comprises reacting 1,3-butadiene and an alkanol, in the presence of a catalyst promoter and an alkoxydimerization catalyst comprising a Group VIII transition metal and a triarylphosphine ligand, which includes one phenyl that is mono-ortho-alkoxy substituted and at least one other phenyl including at least one substituent that withdraws electrons from the phosphorus atom. The product includes an alkoxy-substituted octadiene, which may then be used to produce 1-octene. The catalyst shows improved stability, activity and selectivity toward the alkoxy-substituted octadiene.