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59 results about "Hydroxycitronellal" patented technology

Hydroxycitronellal (7-hydroxy-3,7-dimethyloctanal) is an odorant used in perfumery. Its molecular formula is C₁₀H₂₀O₂.

Fragrance compositions

A method of promoting activated, pleasant moods through the inhalation of energising, non-stressing fragrances (invigorating fragrances) comprising at least 75% by weight, preferably 85% by weight of perfume materials drawn from the following groups:
  • A) At least 10% by weight in total of at least three materials drawn from Group ‘IMP’ comprising: allyl amyl glycolate; benzyl salicylate; bergamot oil; coriander oil; cyclamen aldehyde; 1-(2,6,10-trimethylcyclododeca-2,5,9-trien-1-yl)ethanone; allyl (cyclohexyloxy)acetate; Damascenia 185 SAE; 2,4-dimethylheptan-1-ol; fir balsam; fir needle oil; 3-(4-ethylphenyl)-2,2-dimethylpropanal; ginger oil; guaiacwood; linalyl acetate; litsea cubeba oil; methyl 2,4-dihydroxy-3,6-dimethylbenzoate; nutmeg oil; olibanum oil; orange flower oil; Ozonal AB 7203C; patchouli oil; rose oxide; rosemary oil; sage clary oil; spearmint oil; Tamarine AB 8212E; tarragon oil;
  • B) Optionally up to 90% of materials from the following groups:
    • Group ‘HMR’ comprising:
    • allyl ionone; benzyl acetate; cis-jasmone; citronellol; ethyl linalol; ethylene brassylate; 4-methyl-2-(2-methylpropyl)tetrahydro-2H-pyran-4-ol; geraniol; geranium oil; isoeugenol; lemon oil; 2,4-dimethylcyclohex-3-ene-1-carbaldehyde; 3-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde; 4-(4-hydroxy-4-methylpentyl)cyclohex-3-ene-1-carbaldehyde; alpha-iso-methyl ionone; 3-methylcyclopentadec-2-en-1-one; cyclopentadecanone; cyclohexadecanolide; gamma-undecalactone.
    • Group ‘HMI’ comprising:
    • 1-{[2-(1,1 -dimethylethyl)cyclohexyl]oxy}butan-2-ol; 3a,6,6,9a-tetramethyldodecahydronaphtho[2,1 -{b}]furan; alpha-damascone; dihydromyrcenol; eugenol; 3-(1,3-benzodioxol-5-yl)-2-methylpropanal; 2,4-dimethylcyclohex-3-ene-1-carbaldehyde; mandarin oil; orange oil; 2-(1,1-dimethylethyl)cyclohexyl acetate.
    • Group ‘HMP’ comprising:
    • 1-(2,6,6,8-tetramethyltricyclo[5.3.1.0 {1,5}]undec-8-en-9-yl)ethanone; allyl cyclohexyl propionate; allyl heptanoate; Apple Oliffac S pcmf; 7-methyl-2H-1,5-benzodioxepin-3(4H)-one; cassis base; cis-3-hexenyl salicylate; damascenone; gamma-decalactone; ethyl acetoacetate; ethyl maltol; ethyl methyl phenylglycidate; hexyl acetate; (3E)-4-methyldec-3-en-5-ol; 2,5,5-trimethyl-6,6-bis(methyloxy)hex-2-ene; 4-(4-hydroxyphenyl)butan-2-one; styrallyl acetate; 2,2,5-trimethyl-5-pentylcyclopentanone; ylang oil. Group ‘RMP’ comprising: anisic aldehyde; (2Z)-2-ethyl-4-(2,2,3-trimethylcyclopent-3-en-1-yl)but-2-en-1-ol; benzoin siam resinoid; ethyl vanillin; oxacyclohexadec-12(13)-en-2-one; hexyl salicylate; hydroxycitronellal; jasmin oil; 3-methyl-5-phenylpentan-1-ol; 2-(phenyloxy)ethyl 2-methylpropanoate; alpha-terpineol; vanillin;
    • Group ‘GEN’ comprising:
    • cyclopentadecanolide; oxacyclohexadecan-2-one; hexyl cinnamic aldehyde; ionone beta; isobornyl cyclohexanol; 1-(2,3,8,8-tetramethyl-1,2,3,4,5,6,7(8),8(8a)-octahydronaphthalen-2-yl)ethanone; 4-(1,1-dimethylethyl)phenyl]-2-methylpropanal; linalol; methyl dihydrojasmonate; 2-phenylethanol;
    • provided the following conditions are met:
    • (a) IMPs>=HMPs+HMRs
    • (b) IMPs+HMIs+GENs>=70%
    • (c) (IMP+HMI)/(IMP+HMI+RMP+HMR)>=0.7
    • (d) IMPs/(HMPs+RMPs+IMPs)>=0.5
    • (e) IMPs/[(HMPs+RMPs+IMPs)+(100−TOTAL)]>=0.3
    • wherein ‘IMPs’ indicates the sum of the percentages of materials within Group IMP, and similarly for the remaining groups, the symbol ‘>=’ indicates ‘at least equal to’, and ‘TOTAL’ is the sum of HMPs, HMRs, HMIs, IMPs, RMPs and GENs, provided also that low odour or no odour solvents are excluded from the calculation of these sums is provided which have an invigorating effect when inhaled by a subject.
Owner:GIVAUDAN NEDERLAND SERVICES

High-efficiency mosquito-repelling skin care lotion and preparation method thereof

The invention discloses a high-efficiency mosquito-repelling skin care lotion and a preparation method thereof. The high-efficiency mosquito-repelling skin care lotion is characterized by consisting of the following raw materials: 3-5 percent of 10-20 percent of hydroxycitronellal 1,2-propanediol acetal, 2-5 percent of geranium extract, 5-10 percent of honey, 5-10 percent of egg white, 0.5-2 percent of Chinese angelica, 0.5-2 percent of peach kernel, 0.5-2 percent of salvia miltiorrhiza, 0.5-2 percent of radix angelicae, 0.5-2 percent of rhizoma typhonii, 0.5-2 percent of rhizoma bletillae and the balance of water. The preparation method comprises the following steps: adding water into the traditional Chinese medicine components for decocting, concentrating and cooling; and adding water into the egg white for diluting, mixing with the traditional Chinese medicine component concentrated solution, adding the 3-5 percent of 10-20 percent of hydroxycitronellal 1,2-propanediol acetal for emulsifying and forming. Compared with a conventional mosquito-repelling product, the mosquito-repelling emulsion has the high-efficiency and long-lasting beneficial effects, has the skin care and beauty effect and integrates the effects of repelling mosquitoes, relieving itching, protecting the skin and beautifying. Moreover, by adoption of the nontoxic raw materials which pass through GRAS (Generally Recognized as Safe) authentication, the product is safe and reliable.
Owner:刘桐言

Method for co-producing hydroxycitronellal and hydroxycitronellol

The invention discloses a method for co-producing hydroxycitronellal and hydroxycitronellol. The method comprises the following steps of: arranging a reactive rectification zone I, a common rectification zone and a reactive rectification zone II which are connected from top to bottom as a reactive rectification system, carrying out hydration reaction on citronellal and water in the reactive rectification zone II to prepare hydroxycitronellal, and carrying out hydrogenation reaction on citronellal and hydrogen in the reactive rectification zone I to generate citronellol, and bringing the citronellol into the reactive rectification zone II to be subjected to a hydration reaction to obtain hydroxycitronellol. Citronellal is fed from a tower kettle of the reactive rectification zone II; wateris fed from a tower kettle of the reactive rectification zone II; and hydrogen is fed from the common rectification zone. According to the method, citronellal is used as the raw material, and hydrogenation reaction, hydration reaction and rectification separation are combined to co-produce hydroxycitronellal and hydroxycitronellol. The technological process is greatly simplified, and the method has the advantages of high yield, few three wastes, high selectivity and the like.
Owner:WANHUA CHEM GRP CO LTD

Efficient green synthesis method of hydroxycitronellal

The invention discloses an efficient green synthesis method of hydroxycitronellal. The method comprises the following steps: adding POL-PPh3, PdCl2 and anhydrous THF into a sealed container according to a mass ratio of (100: 5)-(10: 1), reacting at 25-35 DEG C overnight, filtering, removing filtrate, washing filter residues twice with ethyl acetate and ethanol respectively, and collecting solids to obtain a POL-PPh3-coated PdCl2 solid catalyst; taking 1 part by mass of a POL-PPh3-coated PdCl2 catalyst, 10-35 parts by mass of citronellal, 7-20 parts by mass of water and 500-800 parts by mass of toluene, uniformly stirring, and reacting at 180-200 DEG C for 10-24 hours to obtain a reaction solution; after the reaction liquid is cooled, filtering and separating the solid catalyst, fractionating the reaction liquid, and collecting a distillate at 257 DEG C, thereby obtaining the hydroxycitronellal. According to the method, citronellal and water are directly synthesized into hydroxycitronellal in one step under the catalysis of POL-PPh3-coated PdCl2, the method has the advantages of being environmentally friendly, low in price, high in catalytic efficiency, high in yield, mild in reaction condition, high in production efficiency, simple in process, non-toxic, harmless, free of emission of three wastes and the like, and a good foundation is laid for large-scale production of hydroxycitronellal.
Owner:GUANGXI FORESTRY RES INST +1
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