Synthesis of octyl-ethers of biomass-based glycols through two competitive catalytic routes: Telomerization and etherification
作者:Andrei N. Parvulescu、Peter J.C. Hausoul、Pieter C.A. Bruijnincx、Robertus J.M. Klein Gebbink、Bert M. Weckhuysen
DOI:10.1016/j.cattod.2010.05.021
日期:2010.12
pathway can be followed for the synthesis of the desired end products. One such example is the synthesis of octyl-ethers from biomass-based glycols, which can be made either via the telomerization of 1,3-butadiene or the direct etherification of long linear alkenes. For both processes active and selective catalysts have been developed in our groups and their activity and selectivity have been investigated
Synthesis of long alkyl chain ethers through direct etherification of biomass-based alcohols with 1-octene over heterogeneous acid catalysts
作者:Agnieszka M. Ruppert、Andrei N. Parvulescu、Maria Arias、Peter J.C. Hausoul、Pieter C.A. Bruijnincx、Robertus J.M. Klein Gebbink、Bert M. Weckhuysen
DOI:10.1016/j.jcat.2009.09.023
日期:2009.12.10
Heterogeneous etherification of various biomass-based alcohols with 1-octene was investigated as a direct route for the synthesis of long alkyl chain ethers. Several acid catalyst materials including Amberlyst resins and various zeolites were screened as etherification catalysts in a solventless system. It was found that H-Beta zeolites are the most selective catalysts for the etherification of biomass-based
Synthesis of long alkyl chain ethers through etherification of ethylene glycol with 1-octene using heteropolyacid supported on K-10 clay
作者:Ganapati D. Yadav、Suraj O. Katole、Ajay K. Dalai
DOI:10.1016/j.apcata.2014.02.017
日期:2014.5
of glycerol can produce 1,2-propylene glycol, 1,3-propylene glycol, and ethyleneglycol; all of which can be further converted into valuable chemicals. The objective of the current work was to convert ethyleneglycol to value added etherified products by reaction with 1-octene to 2-(octan-2-yloxy) ethanol (C8 ether) and 1,2-bis(octan-2-yloxy) ethane (C16 ether). Several heterogeneous solid acid catalysts
Liquid crystal composition containing an optically active compound and liquid crystal electro-optical element
申请人:——
公开号:US20040079922A1
公开(公告)日:2004-04-29
It is to provide a liquid crystal composition containing at least one type of optically active compounds of the following formulae (1) to (4), and a liquid crystal electro-optical element excellent in display quality. In each formula, C* is asymmetric carbon, and the respective symbols are as defined in description.
R
1
-A
1
-C*HX—Y-A
2
-(Z
1
-A
3
)
m
-C≡C-A
4
-(Z
2
-A
5
)
n
-R
2
(1)
R
1
-A
1
-C*HX
1
—Y
1
-A
2
-Z
1
-A
3
-Z
2
-A
4
-R
2
(2)
R
5
-Pn-C*HX
2
—CH
2
-A
6
-Y
2
-A
7
-R
6
(3)
1
Composition à base de maléates d'organoétain, son procédé d'obtention et son utilisation pour stabiliser des polymeres thermoplastiques
申请人:Atofina
公开号:EP1201707A1
公开(公告)日:2002-05-02
L'invention concerne une composition de maléates d'organoétain susceptible d'être obtenue en faisant réagir un mélange d'un alcool ou d'un époxyalcane avec l'anhydride et/ou l'acide maléique puis en mettant en contact le milieu ainsi obtenu avec un oxyde de dialkylétain.
L'invention concerne également les formulations à base de résines thermoplastiques notamment de polychlorure de vinyle (PVC) stabilisées à l'aide de ladite composition à base de maléates d'organoétain ainsi que les objets rigides ou souples, expansés ou non et les plastisols formés à partir desdites formulations.