The present invention is directed to a process, having a reduced environmental impact, for preparing phenylamino substituted quaternary salt compounds that are CCR2 antagonists.
An integrated process for the preparation of aromatic mono- and polyisocyanates from aromatic amines
申请人:ARCO CHEMICAL TECHNOLOGY INC.
公开号:EP0391716A1
公开(公告)日:1990-10-10
A multi-step process for the preparation of aromatic mono- and polyisocyanates in which an aromatic mono- or polyamine and isocyanic acid are reacted to form an aromatic urea which is then reacted with a dialkyl amine to give an aromatic dialkyl urea product. The aromatic dialkyl urea is thermally treated in an inert organic solvent in the presence of a reaction promoter to produce the isocyanate.
Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins
申请人:——
公开号:US20030013913A1
公开(公告)日:2003-01-16
The invention relates to a chemical compound of formula (I), wherein M
1
represents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; R
1
is the same or different and represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon; R
2
is the same or different and represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon; R
3
represents a branched or unbranched linear or cyclic C
1
-C
40
group that contains carbon, and; R
4
represents a hydrogen atom; whereby R
2
and R
3
are always different from one another.
Manufacture of N-vinyl-N-alkyl-carbamic acid chlorides
申请人:BASF Aktiengesellschaft
公开号:US04137261A1
公开(公告)日:1979-01-30
N-Vinyl-N-alkyl-carbamic acid chlorides are manufactured by reacting crude Schiff bases, which have advantageously been manufactured in the presence of pentane, with phosgene and tertiary amines, treating the reaction mixture with water and then isolating the end product, after having separated off the aqueous phase containing the amine salt. The products are starting materials for the manufacture of surface-coating intermediates, plastics, paints and crop protection agents.
[EN] BUFFERED IONIC LIQUIDS FOR OLEFIN DIMERIZATION<br/>[FR] LIQUIDES IONIQUES TAMPONNÉS POUR LA DIMÉRISATION DES OLÉFINES
申请人:CONOCOPHILLIPS CO
公开号:WO2011112514A1
公开(公告)日:2011-09-15
The present invention relates generally to buffered ionic liquids that are very useful for dimerization of olefins, such as isopropene, wherein the buffer is a phosphine or a bismuthine or an arsine or an amine in the presence of a nickel organometailic catalyst. The buffer can be selected from the group consisting of aryl and phenyl compounds of Bi, P, N, As, and Sb, wherein the buffer can contribute to dimer selectivity.