- Ionic liquids as modulators of fragrance release in consumer goods
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When organic esters or alcohols were dissolved in each of three novel ionic liquids (which have no effective vapour pressure), the vapour-liquid equilibria (as measured by infrared spectroscopy of the gas phase) revealed significant positive deviation from Raoult's law for a wide range of perfume raw materials. The addition of water amplified the repulsive effect of the ionic liquid matrix, and this was exemplified by a series of ternary phase diagrams.
- Ferrero Vallana, Federico M.,Girling, Ricardo P.,Nimal Gunaratne,Holland, Lynette A. M.,Mcnamee, Pauline M.,Seddon, Kenneth R.,Stonehouse, Jonathan R.,Todini, Oreste
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Read Online
- Novel method for preparing tris (3,6 -dioxo-heptyl) amine
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The invention relates to a new method for preparing tris(3,6-dioxaheptyl)amine. The new method is characterized in that ammonia water, diethylene glycol monomethyl ether and thionyl chloride are takenas raw materials, and the tris(3,6-dioxaheptyl)amine is synthesized through three steps. The new method provided by the invention has the following advantages that reaction conditions are mild, the operation is safe, and the danger of using high-risk chemicals such as hydrogen and Raney nickel is avoided; the reaction conversion rate is high, and the product yield is high; only products, sodium chloride and a very small amount of pre-distillation fractions are produced in the process, excess materials can be recycled after treatment, three wastes are very few, and the production process is green and environmentally friendly.
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Paragraph 0037; 0040-0049
(2021/04/14)
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- Synthesis of novel poly(ethylene glycol)-containing imidazolium-functionalized phosphine ligands and their application in the hydrosilylation of olefins
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A series of polyethylene glycol-containing imidazolium-functionalized phosphine ligands (mPEG-im-PPh2) were successfully synthesized and used in the rhodium-catalyzed hydrosilylation of olefins. The results indicate that the RhCl3/mPEG-im-PPh2 catalytic system exhibits both excellent activity and selectivity for the β-adduct. In addition, the catalytic system may be recycled at least six times.
- Zhang, Guodong,Li, Jiayun,Yang, Chuang,Niu, Congbai,Bai, Ying,Liu, Yu,Peng, Jiajian
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- Preparation method of ethyl methoxyethoxy ethyl sulfone
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The invention discloses a preparation method of ethyl methoxyethoxy ethyl sulfone. The preparation method comprises steps as follows: S1, halogenation: diethylene glycol monomethyl ether is halogenated, and a halogenated product is obtained; S2, vulcanization: the halogenated product is vulcanized, and a vulcanized product is obtained; S3, oxidization: the vulcanized product is oxidized, and ethyl methoxyethoxy ethyl sulfone is obtained. According to the preparation method of ethyl methoxyethoxy ethyl sulfone, preferably, triethylamine is taken as a precipitant, so that toxicity is reduced, the reaction is more sufficient, and production and control are facilitated; meanwhile, a technology utilizing metachloroperbenzoic acid as an oxidizing agent is adopted to oxidize the components into sulfone, a system is relatively simple, operation is easy, furthermore, oxidizing capacity is higher, and yield is higher and can reach 80%-90%; besides, aftertreatment operation of metachloroperbenzoic acid is simple, and metachloroperbenzoic acid is easy to clean.
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Paragraph 0031; 0032; 0033; 0034; 0035; 0036; 0037-0044
(2017/08/28)
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- Fluorescent dye
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PROBLEM TO BE SOLVED: To provide a fluorescent dye that has improved water solubility and thus provides high fluorescence intensity. SOLUTION: A fluorescent dye of the present invention is an azole derivative having a polyoxyalkylene group represented by general formula E-O-(CH2CH2O)p-, where E is a C1-4 alkyl group and p is an integer from 1 to 40. The dye has improved water solubility and provides high fluorescence intensity. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2017,JPOandINPIT
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Paragraph 0059; 0061
(2017/02/28)
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- IONIC LIQUID SYSTEMS
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The present invention relates to an ionic liquid system for enhanced delivery and/or deposition of a perfume raw material onto a substrate, particularly fabric, hard surfaces, soft surfaces, skin, or hair. The invention also relates to consumer products comprising the new ionic liquid systems, and processes for making and methods of using such ionic liquid systems and consumer products.
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Paragraph 0209-0210
(2016/07/27)
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- FRAGRANCE COMPOSITIONS COMPRISING IONIC LIQUIDS
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The present invention relates to a fragrance composition comprising ionic liquids for enhanced evaporation of the perfume raw materials. The invention also relates to methods of use of the fragrance compositions for perfuming suitable substrates, particularly skin and hair.
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Paragraph 0227-0228
(2016/05/19)
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- Homogeneous liquid-liquid extraction of metal ions with non-fluorinated bis(2-ethylhexyl)phosphate ionic liquids having a lower critical solution temperature in combination with water
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Ionic liquids with an ether-functionalised cation and the bis(2-ethylhexyl)phosphate anion show thermomorphic behaviour in water, with a lower critical solution temperature. These ionic liquids are useful for homogeneous liquid-liquid extraction of first-row (3d) transition metals.
- Depuydt, Daphne,Liu, Liwang,Glorieux, Christ,Dehaen, Wim,Binnemans, Koen
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supporting information
p. 14183 - 14186
(2015/09/15)
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- SYNTHESIS OF DIFUNCTIONAL OXYETHYLENE-BASED COMPOUNDS
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A method of reacting a toluenesulfonyl-terminated polyoxyethylene compound having the formula CH3—C6H4—SO2—(O—CH2—CH2)n—O—R1 with an ammonium salt having the formula NR24X to form a compound having the formula X—CH2—CH2—(O—CH2—CH2)n-1—R3. The value n is a positive integer. X is a halogen, cyanide, cyanate, thiocyanate, or azide. R1 is a terminating group. Each R2 is hydrogen or an alkyl group. —R3 is —O—R1 or —X.
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Page/Page column 2-3
(2009/07/25)
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- Practical use of NH4X salts for difunctional oxyethylene-based intermediates
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A series of tosyl functionalized oxyethylene-based organic compounds were selected to analyze the scope and efficiency of a general substitution method for conversion to difunctional, soluble oxyethylene based intermediates using readily available ammonium salts, glycols and commercially modified ethoxy-ethanols. Straightforward preparation, product purification and low cost reagents are particularly advantageous for compounds incorporating halides, thiocyanates and methoxy groups.
- Holmes, Brian T.,Snow, Arthur W.
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p. 4813 - 4815
(2008/02/05)
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- Solution-phase parallel synthesis with oligoethylene glycol sorting tags. Preparation of all four stereoisomers of the hydroxybutenolide fragment of murisolin and related acetogenins
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The principles of the oligoethylene glycol (OEG) mixture synthesis are illustrated with the synthesis of all four possible stereoisomers of a hydroxybutenolide fragment common to murisolin and many other acetogenins. Modified dimethoxybenzyl groups with varying numbers of OEG units (-CH 2CH2O-) are used to protect alcohols and serve as codes for configurations at two stereocenters. The encoded isomers are carried through several steps in a sequence of mixing prior to the reaction and then demixing during the separation to give individual pure products. A new tagging scheme is introduced in which a stereocenter bearing a hydroxy group is given two different tags. These initially redundant tags then serve to encode the configuration of another (untagged) stereocenter by appropriate pairwise reactions of the tagged precursors. The experimental features (reaction, analysis, separation, and characterization) of OEG mixture synthesis are detailed and are compared to and contrasted with those of fluorous mixture synthesis.
- Gudipati, Venugopal,Curran, Dennis P.,Wilcox, Craig S.
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p. 3599 - 3607
(2007/10/03)
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- Convergent synthesis of AB2-AB3 hybrid-type of amphiphilic oligoethyleneoxy-modified poly(benzyl ether) dendrons
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A new class of AB2-AB3 hybrid-type of amphiphilic oligoethyleneoxy-modified poly(benzyl ether) dendrons has been synthesised by a convergent route.
- Tang, Dai-Hua,Fan, Qing-Hua
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p. 698 - 699
(2007/10/03)
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- Efficient N-Alkylation of Pyrrole under Solid Triphase Transfer Catalysis Conditions. Application to N-Oxyalkyl Pyrroles
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Synthesis of N-substituted pyrroles was easily performed on a large scale under solid phase transfer catalysis conditions.This method allows to use low reactive alkyl chlorides as the alkylating agents.Small polyethyleneglycol chlorides can also be used as the substituents and yield N-oxyalkyl pyrroles.
- Hamaide, T.
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p. 2913 - 2920
(2007/10/02)
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