aA process for polymerizing ethylene which comprises contacting ethylene at a temperature of from about ambient to about 70C with a polymerization initiator comprising a complex of an alkyllithium compound with 1,2-dipyrrolidinoethane and recovering the polymerization product. 一个过程为聚合包括与乙烯...
Process for the manufacture of a compound based on a minimum of two layers material. SE discloses a method for manufacturing a composite of at least two layers, wherein at least one layer (1) comprises a ceramic mass, IN WHICH COMMODITIES A... E Goerenz,T Rymon-Lipinski 被引量: 0...
> As for this invention, as for the said compound, a) methyl methacrylate 80 - 99.9 weight %, b) ethylene 0.1 - 20 weight %, c) further comonomer 0 - 19.9 weight % it features that it consists of the monomer unit with thermoplasticity in regard to the processed possible compound. Fu...
primary amine or a secondary amine in the presence of hydrogen and a heterogeneous catalyst, in which a biochemically prepared ethanol (bioethanol) in which the concentration of sulfur and/or sulfur-containing compounds has been reduced beforehand by bringing it into contact with an adsorbent is ...
aThere is a widespread consensus that the hexavalent molybdenum initially available in the zeolite channels likely as MoO3,22 or as (Mo2O5)2+ dimers23-26 is first converted into active Mo2C carbide species,6 which are believed to represent the key compound in methane activation.10 有普遍公众...
Process for the hydroformylation of an optionally substituted ethylenically unsaturated compound by reaction thereof with carbon monoxide and hydrogen in the presence of a specific catalyst system. The specific catalyst system comprises:... DRENT Eit,VAN GINKEL Roelof,JAGER Willem Wabe 被引量: 1发表...
The X-ray diffraction experiments showed that the ethyl group adopts a preferential orientation with respect to the ethylene bridge. Theoretical calculations were performed for this compound in order to estimate the more stable geometries that were possible. The equilibrium geometries of the low-energy...
(b) poly- alkylene glycol, alkyl poly- alkylene glycol amine or these blends or includes at least one side of the chemical compound of the aforementioned 2 types the blend where end of one side is done the ended - cap at leastSo being, it denaturalizes the polymer which includes acid ...
g., sodium monochloroacetate, the monoacetyl ester of glycerine, ethylene monochlorohydrin, formamide, etc. Furthermore, in making up the printing paste, if na insufficient amounts of base are used and some ot of the stabilized diazo compound and the coupling component remains undissolved, the ...
3. A compound according to claim 1 wherein R1 is a chlorine or fluorine atom or an ethoxy group in the 5-position of the indole and R2 is hydrogen. 4. A compound according to claim 1 wherein the substituents R5 and R6 are respectively in the 2- and 4-positions. 5. A compound...