Solvent-free domino acylation/cyclization reactions between fatty acid esters and o-phenylenediamine mediated by immobilized lipase from Mucor miehei (MML) were found to be an efficient way in the synthesis of 2-alkylbenzimidazole. Compared with other substrates, methyl fatty acid esters with moderated chain length exhibited best activity with yield up to 95%. The mechanism of the domino process was
[EN] HETEREOCYCLIC AGENT AS CATALYTIC STABILIZING AGENT IN A HYDROFORMYLATION PROCESS<br/>[FR] AGENT HÉTÉROCYCLIQUE COMME AGENT DE STABILISATION CATALYTIQUE DANS UN PROCÉDÉ D'HYDROFORMYLATION
申请人:DOW TECHNOLOGY INVESTMENTS LLC
公开号:WO2014149915A1
公开(公告)日:2014-09-25
A heterocyclic nitrogen stabilizing agent is employed to reduce the rate of catalyst deactivation in a hydroformylation process.
在氢甲酰化过程中,使用杂环氮稳定剂来降低催化剂失活的速率。
Surface treatment liquid, surface treatment method, and method for suppressing pattern collapse
申请人:TOKYO OHKA KOGYO CO., LTD.
公开号:US10961422B2
公开(公告)日:2021-03-30
A surface treatment liquid capable of hydrophobizing a surface of a treatment target without including a silylation agent, a surface treatment method using the liquid, and a method for suppressing pattern collapse, including surface treatment by the surface treatment method. The liquid contains a nitrogen-containing heterocyclic compound as a water-repelling agent. A compound including one or more hydrocarbon groups which may be substituted with a halogen atom in which a total number of carbon atoms of the one or more hydrocarbon group is three or more, is used as the nitrogen-containing heterocyclic compound. The liquid may include only a nitrogen-containing heterocyclic compound having the above-described predetermined structure, as a water-repelling agent.
Water-soluble preflux, printed circuit board, and process for treating the surface of a metal in a printed circuit board
申请人:——
公开号:US20030141351A1
公开(公告)日:2003-07-31
The invention provides a water-soluble prefluxe that can solve problems with a soldering land array having a narrow spacing in that fused solder is likely to cause soldering bridges with defective soldering, a printed circuit board with its film formed thereon, and a surface treatment process for a metal in that circuit. The water-soluble preflus comprises given two different benzimidazoles compound and an iodine-based compound optionally with an amino acid, etc. The invention provides a printed circuit board with a film of that preflux formed thereon, and a surface treatment process for the metal in that circuit.