30 results about "Octanol water partition" patented technology

Described are controlled, time-release microparticulate active and bioactive compositions (including perfuming compositions) for targeted delivery to surfaces such as skin, hair and fabric and the environment proximate thereto, where the active and bioactive materials have a calculated log10P values of between 1 and 8 (P being the n-octanol-water partition coefficient). Such compositions include the active or bioactive material in single phase, solid solution in a wax or polymer matrix also having coated thereon and/or containing a compatible surfactant. Also described are processes and apparatus for preparing such compositions and processes for using same. Furthermore, certain component(s) of the aforementioned compositions in combination with one another are novel, and other components have novel uses in increasing fragrance substantivity, particularly in hair care preparations such as hair gels and shampoos.

Described are controlled, time-release microparticulate active and bioactive compositions (including perfuming compositions) for targeted delivery to services such as skin, hair and fabric and the environment proximate thereto, where the active and bioactive materials have a calculated log10P values of between 1 and 8 (P being the n-octanol-water partition coefficient). Such compositions include the active or bioactive material in single phase, solid solution in a wax or polymer matrix also having coated thereon and/or containing a compatible surfactant. Also described are processes and apparatus for preparing such compositions and processes for using same. Furthermore, certain component(s) of the aforementioned compositions in combination with one another are novel, and other components have novel uses in increasing fragrance substantivity.

Described are controlled, time-release microparticulate active and bioactive compositions (including perfuming compositions) for targeted delivery to surfaces such as skin, hair and fabric and the environment proximate thereto, where the active and bioactive materials have a calculated log10P values of between 1 and 8 (P being the n-octanol-water partition coefficient). Such compositions include the active or bioactive material in single phase, solid solution in a wax or polymer matrix also having coated thereon and/or containing a compatible surfactant. Also described are processes and apparatus for preparing such compositions and processes for using same. Furthermore, certain component(s) of the aforementioned compositions in combination with one another are novel, and other components have novel uses in increasing fragrance substantivity, particularly in hair care preparations such as hair gels and shampoos.

A method of creating a cationic molecularly imprinted polymer bead that can bind inorganic target compounds is disclosed and described. The cationic molecularly imprinted polymer bead can be formed by complexing a target compound with a cationic ligand, polymerizing the cationic ligands to form the bead, and then extracting the target compound from the bead. The cationic ligand complex can have an octanol water partition coefficient of about 1 to about 10. The cationic molecularly imprinted polymer bead can have a porous structure containing a plurality of complexing cavities for selectively bind specific target compounds for removal from potable water, mine effluent, industrial effluent, or other fluids.

A dip-formed article that has wearing comfort, excelling in not only tensile strength but also flexing fatigue and that itself does not tend to suffer coloration even when the article is worn and operation is continued; and a dip-forming composition capable of providing such a dip-formed article. There is provided a dip-forming composition comprising a conjugated diene rubber latex and an organic peroxide, wherein providing that X refers to the 10-hr half-life temperature (° C.) of organic peroxide and Y refers to the octanol-water partition coefficient of organic peroxide, the organic peroxide satisfies the formulae: 11≧Y≧2 (1), and 100−2Y≧X≧70−2Y (2). There is further provided a dip-formed article obtained from the composition.

This invention is concerned with perfume compositions comprising: a) nitrile perfumery material of general formula RCN where R is a hydrocarbyl radical of formula CxHy, x is an integer in the range 9 to 12, and y is an integer in the range 15 to 25; and b) hydrocarbon perfumery material having a boiling point of less than about 185° C. and an octanol-water partition coefficient of at least 4.0 (in logarithmic form), wherein a) and b) together comprise at least 20% by weight of the total weight of the composition. Perfume compositions in accordance with the present invention provide a good deodorant effect several hours after application to a surface such as fabric or skin.

A water base pigment ink for ink-jet recording contains a pigment, a propylene glycol derivative which has a saturation vapor pressure of 2 to 10 hPa and an octanol-water distribution coefficient log P of 0 to 1.35, and dipropylene glycol-n-propyl ether. The propylene glycol derivative is contained in the ink by 0.25 to 1.5% by weight, and the dipropylene glycol-n-propyl ether is contained in the ink by 0.5 to 1% by weight. The ink is excellent in the paper surface drying performance. Further, it is possible to avoid the occurrence of the feathering and the blank stripes in letters.

The invention discloses microcapsules, a preparation method thereof, cleaning composition containing the microcapsules and a cleaning agent. The cleaning composition is prepared from the following components by mass: 5wt%-90wt% of a surfactant and 0.01wt%-10wt% of the microcapsules wherein the microcapsules contain hollow polymer microspheres with microporous channels in the surface and substanceswith fragrance and/or special smell and/or special functions; the substances with fragrance and/or special smell and/or special functions are not limited by functional groups, ClogP (partition coefficient octanol/water) and water solubility; the surfactant in the cleaning composition is preferably a novel green and environment-friendly nonionic surfactant (alkyl ethoxy polyglycosides), and the cleaning composition and the cleaning agent with excellent performance and environmental friendliness are obtained from the surfactant and the microcapsules through compounding and widely used in the fields of fabric cleaning agents, tableware cleaning agents, floor cleaning agents, carpet cleaning agents, skin cleaning agents, hair cleaning agents, deodorant and the like.

The present invention incorporates weakly basic substituents (pKa about 8 or greater) such as pyrrolidine, piperidine, piperazine and azapane moieties in halogenated 2-nitromidazoles as a major improvement over prior art for the non-invasive detection of cellular hypoxia in normal and malignant tissues. The invention features the use of [18F] positron emission tomography, [19F] magnetic resonance spectroscopy, and [19F] magnetic resonance imaging. Improvements over prior art compounds are six-fold. 1) Salts of weakly basic reagents are highly water-soluble which facilitates administration. 2) Unreacted reagents are rapidly cleared from systemic circulation thereby decreasing background noise. 3) Reagents with weakly basic substituents are concentrated in tissue ˜3 fold above plasma levels thereby increasing binding intensity and enhancing signal detection. 4) Conjugate bases of weakly basic reagents have intermediate octanol-water partition coefficients that facilitate their penetration into all tissues including brain. 5) Cellular adducts of reagents containing weakly basic substituents are more stable than reagents of prior art. 6) Reagents with weakly basic substituents are effective for the detection of transient hypoxia in solid tissue.

Provided is a method for producing a chloroprene graft copolymer latex containing no organic solvent and exhibiting high adhesive strength even for soft polyvinyl chloride. A method for producing a chloroprene graft copolymer latex includes a chloroprene polymerization step of giving a chloroprene polymer latex and a graft copolymerization step of giving a chloroprene graft copolymer latex. The chloroprene polymerization step is a step of subjecting at least chloroprene (A-1) of chloroprene (A-1) and a monomer (A-2) copolymerizable with chloroprene (A-1) to emulsion radical polymerization. The graft copolymerization step is a step of adding, to the chloroprene polymer latex, a (meth)acrylate (B) and an organic peroxide (C) having an octanol/water partition coefficient of −2.0 or more and 3.0 or less to subject the chloroprene polymer to graft copolymerization with the (meth)acrylate (B) at a temperature of 10° C. or more and 40° C. or less.

Photothermographic materials contain one or more blocked aliphatic thiol compounds in an amount of at least 1 mg/m² as stabilizers. These compounds have a calculated octanol-water partition coefficient (c log P value) of 2.0 or greater, and an N value equal to or greater than 6.5.

The invention belongs to the field of cosmetics, and discloses a stable oil-soluble polypeptide composition, which comprises the following components: polypeptide, a solubilizing agent, and an oily solvent; the solubilizing agent has an octanol water partition coefficient of 1.70 to 1.90 or an HLB value of 8.0 to 10.0; the polypeptide is selected from at least one of palmitoyl tripeptide-7, palmitoyl tripeptide-1, palmitoyl tripeptide-5, palmitoyl tripeptide-8, palmitoyl tetrapeptide-5, palmitoyl tetrapeptide-7, palmitoyl tetrapeptide-10, and palmitoyl pentapeptide-4; and the solubilizing agent is at least one selected from the group consisting of ethylhexylglycerin, glycerol caprylate, polyoxyethylene fatty acid, sorbitan laurate, and polyoxyethylene oxypropylene oleate. The oil-soluble polypeptide composition of the present invention is easy to be added to a cosmetic of a full oil formula, and has good compatibility, the stability of the oil-soluble polypeptide composition is good, the product is not easy to grow bacteria, compared with traditional water-soluble peptide products, the product does not need to add preservatives, and the formula is safer.

The present invention addresses the problem of providing: a polyacrylamide-based papermaking additive having an excellent paper strength-enhancing effect; paper in which the papermaking additive is used; and a paper manufacturing method in which the papermaking additive is used. A papermaking additive containing an amphoteric polyacrylamide containing, as copolymerization components, (A) (meth)acrylamide, (B) a (meth)allyl sulfonic acid, (C) an anionic vinyl monomer having a carboxyl group, and (D) a cationic vinyl monomer having a quaternary ammonium, wherein the papermaking additive is characterized in that the ratio of the anion equivalent and cation equivalent of the amphoteric polyacrylamide is 0.05 to 1.7, the octanol/water partition coefficient of the amphoteric polyacrylamide is -1.44 to -0.60, and the surface tension of the amphoteric polyacrylamide is 66 mN/m to less than 74 mN/m.

The invention discloses care composition, a care agent as well as preparation methods and applications thereof. The care composition is prepared from components in percentage by mass as follows: 1wt%-50wt% of a surfactant and 0.01wt%-10wt% of microcapsules. The microcapsules for the preparation method of the care composition are added to a care agent system and can be deposited on the surfaces ofto-be-cared substances such as fabric, skin and hair or reserved in the to-be-cared substances such as gaps of fabric fibers in a physical absorption or chemical absorption manner. A selected core substance is not limited by functional groups, octanol-water distribution coefficient, polarity and water solubility; preferably, the surfactant is selected from biodegradable alkyl ester based quaternary ammonium salt and a novel green and environment-friendly nonionic surfactant (alkylethoxyglucoside), and the care composition prepared from the surfactant and the microcapsules through compounding is better in stability, can keep aroma for a long time and is greener and more environmentally friendly.

The invention discloses a polymer adsorbent / cellulose acetate composite membrane material and a preparation method and application thereof. The preparation method of the composite membrane material comprises the following steps: dissolving a polymer adsorbent and a cellulose acetate polymer into a solvent to obtain a film casting solution; and forming a film from the film casting solution to obtain the composite membrane material. The composite membrane material can be used for enrichment and passive collection of hydrophobic organic pollutants and hydrophilic organic pollutants from water bodies; the logKow of the hydrophobic organic pollutants or the hydrophilic organic pollutants is 1.49-9.47, Kow is octanol-water partition coefficient, and the organic pollutants comprises organic phosphate flame retardants, phenols, estrogen, organophosphorus pesticides and triazine pesticides and other organic compounds. The polymer adsorbent in the composite membrane material is particularly important for the passive collection of trace pollutants (usually nanogram per liter level) in the water environment, can be used for enrichment of pollution with the concentration time reaching 10<3>-10<6>, and greatly reduces the detection limit of the pollutants.

The method for producing a polyimide fiber includes a coagulation step of forming a polyimide precursor fiber by extruding a polyimide precursor solution containing a polyimide precursor and a compound having an acid dissociation constant (pKa) of a conjugate acid in water at 25° C. of 6.0 to 10 inclusive and an octanol-water partition coefficient (Log P) at 25° C. of −0.75 to 0.75 inclusive into a poor solvent or nonsolvent for the polyimide precursor; and a heat drawing step of forming the polyimide fiber by drawing the polyimide precursor fiber while heating same. The polyimide fiber of the present disclosure has a physical property such that the coefficient of thermal expansion thereof is in the range of −15 ppm/K to 0 ppm/K inclusive.