Abstract:
The invention relates to the use of transition metal complexes of formula (I) in organic light-emitting diodes, wherein: M represents a metal atom; carbene represents a carbene ligand; L represents a monoanionic or dianionic ligand; K represents a neutral monodentate or bidentate ligand selected from the group consisting of phosphines, CO, pyridines, nitriles and of conjugated dienes that form a pi-complex with M ; n represents a number of carbene ligands, whereby n is at least 1; m represents a number of ligands L, whereby m can be 0 or = 1; o represents a number of ligands K, whereby o can be 0 or = 1, and the sum n + m + o depends on the oxidation stage and coordination number of the metal atom used and on the dentation of the ligands carbene, L and K as well as on the charge of the ligands carbene and L, with the condition that n is at least 1. The invention also relates to an OLED containing these transition metal complexes, a light-emitting layer containing these transition metal complexes, OLED's containing this light-emitting layer, devices that contain an inventive OLED, and to special transition metal complexes containing at least two carbene ligands.
Abstract:
The invention relates to a method for producing alkylaryl sulfonates, the alkylaryl sulfonates obtained according to said method, alcohol mixtures and olefin mixtures obtained as intermediate products, alkylaromatic compounds obtained therefrom, the use of said alkylaryl sulfonates as surfactants, and detergents containing said surfactants.
Abstract:
Disclosed is a method for the oligomerization of olefins, wherein an olefin is brought into contact with a catalyst system that is obtained from a chromium source, a cycloalkylalkyl-substituted triazacyclohexane, especially a 1,3,5-tris-(cycloalkylalkyl)-1,3,5-triazacyclohexane and an activator such as an alkyl aluminum compound or an alkylalumoxane.
Abstract:
Olefins are oligomerized by contacting an olefin with a catalyst system that is comprised of a) at least one transition metal complex that is complexed with a polydentate complexing ligand and b) an alkylaluminoxane, each component being present in such amounts that the molar ratio of aluminum transition metal is greater than 10, wherein at least part of the amount of the transition metal complex is added continuously or in portions during the oligomerization.
Abstract:
Production of surfactant alcohols or their ethers by derivatization of 10-20C olefins or mixtures, comprises: (i) metathesizing a 4C olefin mixture; (ii) removing the 5-8C olefins; (iii) dimerizing the separated olefins to a 10-16C olefin mixture; (iv) derivatizing the mixture to a mixture of surfactant alcohols; and optionally (v) alkoxylating the alcohols. Production of surfactant alcohols or their ethers by derivatization of 10-20C olefins or mixtures, comprises: (i) metathesizing a 4C olefin mixture of 1-butene/2-butene ratio at least 1.2; (ii) removing the 5-8C olefins; (iii) dimerizing the separated olefins (optionally in admixture) to a 10-16C olefin mixture; (iv) derivatizing the mixture to a mixture of surfactant alcohols (optionally after fractionation); and optionally (v) alkoxylating the alcohols. Independent claims are also included for: (1) the novel olefin mixtures obtained by steps (i) - (iii) above; and (2) the novel surfactant alcohols and their alkoxylates obtained by steps (i) - (iv) and optionally also step (v) above.
Abstract:
Production of surfactant alcohols or their ethers by derivatization of 10-20C olefins or mixtures, comprises: (i) metathesizing a 4C olefin mixture; (ii) removing the 5-8C olefins; (iii) dimerizing the separated olefins to a 10-16C olefin mixture; (iv) derivatizing the mixture to a mixture of surfactant alcohols; and optionally (v) alkoxylating the alcohols. Production of surfactant alcohols or their ethers by derivatization of 10-20C olefins or mixtures, comprises: (i) metathesizing a 4C olefin mixture of 1-butene/2-butene ratio at least 1.2; (ii) removing the 5-8C olefins; (iii) dimerizing the separated olefins (optionally in admixture) to a 10-16C olefin mixture; (iv) derivatizing the mixture to a mixture of surfactant alcohols (optionally after fractionation); and optionally (v) alkoxylating the alcohols. Independent claims are also included for: (1) the novel olefin mixtures obtained by steps (i) - (iii) above; and (2) the novel surfactant alcohols and their alkoxylates obtained by steps (i) - (iv) and optionally also step (v) above.
Abstract:
Olefins are oligomerized by contacting an olefin with a catalyst system that is comprised of a) at least one transition metal complex that is complexed with a polydentate complexing ligand and b) an alkylaluminoxane, each component being present in such amounts that the molar ratio of aluminum transition metal is greater than 10, wherein at least part of the amount of the transition metal complex is added continuously or in portions during the oligomerization.