- Branched alkyl sulfonate anionic surfactant and preparation process thereof
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The invention discloses a branched alkyl sulfonate anionic surfactant and a preparation process thereof, and belongs to the field of fine chemical surfactants. The method comprises the steps of (1) conducting a esterification carboxyl-terminated reaction, specifically, catalyzing oleic acid or linoleic acid and fatty alcohol to be subjected to esterification reaction by adopting organic acid as acatalyst to prepare an alkyl oleate or alkyl linoleate compound; and (2) conducting a double bond addition sulfonation reaction, specifically, in the presence of the catalyst, carrying out sulfonationreaction with the alkyl oleate compound or the alkyl linoleate compound obtained in the step (1) by taking low-carbon alcohol and deionized water as solvents and sodium hydrogen sulfite as a sulfonation reagent to prepare the branched alkyl sulfonate anionic surfactant. The synthesized branched alkyl sulfonate anionic surfactant product can effectively reduce the surface tension of an aqueous solution, and is good in solubility, large in initial foaming amount, high in defoaming speed and excellent in surfactant performance. The method has the advantages of simple process operation, few sidereactions, energy saving and environmental protection.
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Paragraph 0090-0091
(2021/02/10)
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- Metathesis of renewable polyene feedstocks – Indirect evidences of the formation of catalytically active ruthenium allylidene species
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Cross-metathesis (CM) of conjugated polyenes, such as 1,6-diphenyl-1,3,5-hexatriene (1) and α-eleostearic acid methyl ester (2) with several olefins, including 1-hexene, dimethyl maleate and cis-stilbene as model compounds has been carried out using (1,3-bis-(2,4,6-trimethylphenyl)-2-imidazolidinylidene)-dichloro(o-isopropoxyphenylmethylene)ruthenium (Hoveyda-Grubbs 2nd generation, HG2) catalyst. The feasibility of these reactions is demonstrated by the observed high conversions and reasonable yields. Thus, regardless of the relatively low electron density, =CH–CH= conjugated units of molecules, including compound 2 as a sustainable, non-foodstuff source, can be utilized as building blocks for the synthesis of various value-added chemicals via olefin metathesis. DFT-studies and the product spectrum of the self-metathesis of 1,6-diphenyl-1,3,5-hexatriene suggest that a Ru η1-allylidene complex is the active species in the reaction.
- Kovács, Ervin,Sághy, Péter,Turczel, Gábor,Tóth, Imre,Lendvay, Gy?rgy,Domján, Attila,Anastas, Paul T.,Tuba, Róbert
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supporting information
p. 213 - 217
(2017/09/12)
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- Antiproliferative activity of synthetic fatty acid amides from renewable resources
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In the work, the in vitro antiproliferative activity of a series of synthetic fatty acid amides were investigated in seven cancer cell lines. The study revealed that most of the compounds showed antiproliferative activity against tested tumor cell lines, mainly on human glioma cells (U251) and human ovarian cancer cells with a multiple drug-resistant phenotype (NCI-ADR/RES). In addition, the fatty methyl benzylamide derived from ricinoleic acid (with the fatty acid obtained from castor oil, a renewable resource) showed a high selectivity with potent growth inhibition and cell death for the glioma cell line - the most aggressive CNS cancer.
- Dos Santos, Daiane S.,Piovesan, Luciana A.,D'Oca, Caroline R. Montes,Hack, Carolina R. Lopes,Treptow, Tamara G.M.,Rodrigues, Marieli O.,Vendramini-Costa, Débora B.,Ruiz, Ana Lucia T.G.,De Carvalho, Jo?o Ernesto,D'Oca, Marcelo G. Montes
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p. 340 - 347
(2015/02/02)
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- ADDUCTS OF LEVULINIC DERIVATIVES WITH EPOXIDIZED FATTY ACID ESTERS AND USES THEREOF
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The present disclosure relates to methods of preparation of compounds resulting from the reaction of levulinic esters and epoxidized unsaturated fatty acid esters. The compounds are useful as renewable biomass-based plasticizers for a variety of polymers. Mono-, di- and tri-ketal adducts formed in a reaction between alkyl esters of levulinate and epoxidized unsaturated fatty acid esters derived from vegetable oils are also disclosed.
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Page/Page column 19-20
(2010/11/27)
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