摘要:
The subject of the present invention is a composition comprising:at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micrometers and preferably smaller than 2 and larger than 0.2 micrometers,at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers.This composition is defined in that the quantity of polyol in the mixture is chosen so as to meet one of the following two constraints:the polyol content, expressed in mass per cent, is at least equal to 35-0.75 R, advantageously at least equal to 40-0.75 R, preferably to 45-0.75 R;the polyol content, expressed in mass per cent, does not exceed 45-2 R, advantageously does not exceed 40-2 R, preferably 35-2 Rwith R equal to the ratio of the mean size (d.sub.50) of the emulsion to that of the polyol dispersion.Application to organic synthesis.
摘要:
The present invention relates to a composition comprising at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micometers; and at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers wherein the content of polyhydroxylated polymer, advantageously of polyol, expressed in mass per cent, is at least equal to ⅚R−20, with R equal to the ratio of the mean size (d50) of the emulsion to that of the dispersion of polyhydroxylated polymer, advantageously of polyol.
摘要:
The present invention relates to compositions comprising essentially amorphous cellulose nanofibrils, at least one additive chosen from carboxycellulose with a degree of substitution of more than 0.95, a natural polysaccharide, a polyol, and optionally at least one co-additive, the content of additive and of optional co-additive being less than or equal to 30% by weight relative to the weight of nanofibrils and of additive and of optional co-additive. Similarly, a subject of the invention is a process for preparing such compositions, which consists in adding the additive and the optional co-additive to a suspension of essentially amorphous nanofibrils, and then in drying the suspension thus supplemented. The compositions obtained are readily redispersable and conserve their initial rheological properties.
摘要:
The invention concerns a foaming aqueous medium (FAM) capable of forming a stable foam in the presence of grease (G). The foaming aqueous medium (FAM) of the present invention comprises water, at least one base surface-active agent (BSA) which comprises at least one amphiphilic additive (ADD), which is a fluorinated compound, compatible with said base surface-active agent (BSA). The present invention further concerns a liquid detergent composition for washing dishes by hand or textiles by hand comprising an effective amount of the foaming aqueous medium (FAM) of the present invention. The present invention also concerns a liquid composition for body hygiene, oral hygiene or body treatment comprising an effective amount of the foaming aqueous medium (FAM) of the present invention.
摘要:
Water-redispersible granules including at least one active material in the form of a hydrophobic liquid, at least one non-ionic surfactant selected from polyoxyalkylene derivatives, and at least one water-soluble compound selected from polyelectrolytes belonging to the weak polyacid family are disclosed. A method for preparing such granules by preparing an aqueous emulsion of at least one active material, at least one non-ionic surfactant and at least one water-soluble compound, and drying the resulting emulsion, is also disclosed.
摘要:
The subject of the present invention is a composition comprising:at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micrometers and preferably smaller than 2 and larger than 0.2 micrometers,at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers.This composition is defined in that the quantity of polyol in the mixture is chosen so as to meet one of the following two constraints:the polyol content, expressed in mass per cent, is at least equal to 35-0.75R, advantageously at least equal to 40-0.75R, preferably to 45-0.75R;the polyol content, expressed in mass per cent, does not exceed 45-2R, advantageously does not exceed 40-2R, preferably 35-2Rwith R equal to the ratio of the mean size (d.sub.50) of the emulsion to that of the polyol dispersion.
摘要:
Stable pyrethroid microemulsion compositions having from 0.1% to 95% by weight/weight of at least one pyrethroid in liquid form; from 2% to 90% by weight/weight of a three-component surfactant system having at least one anionic surfactant, at least one nonionic surfactant and at least one co-surfactant chosen from aliphatic alcohols, cycloaliphatic alcohols, arylaliphatic alcohols, ether-alcohols and aliphatic carboxylic acids; and water.The ratio by weight of anionic surfactant/nonionic surfactant is from 10/90 to 90/10, and the ratio by weight of co-surfactant/anionic and nonionic surfactants is from 0.1 to 1.5.The microemulsion compositions are applied directly or after dilution with water to plants (crops) or wood for controlling insects.
摘要:
The present invention relates to a composition comprising at least one masked or unmasked polyisocyanate in the form of an aqueous emulsion whose mean size is between 0.1 and 10 micometers; and at least one polyhydroxylated polymer, advantageously a polyol, in the form of a second aqueous dispersion whose mean size is between 10 and 200 nanometers wherein the content of polyhydroxylated polymer, advantageously of polyol, expressed in mass per cent, is at least equal to 5/6R-20, with R equal to the ratio of the mean size (d50) of the emulsion to that of the dispersion of polyhydroxylated polymer, advantageously of polyol.
摘要:
The present invention relates to a water-redispersible pulverulent composition obtained by a mixing and then drying an emulsion of at least one water-insoluble film-forming polymer, at least one main surfactant and at least one water-soluble compound, comprising a) an emulsion of at least one water-insoluble film-forming polymer prepared from ethylenically unsaturated monomers, b)at least one main surfactant whose water/surfactant binary phase diagram contains an isotropic phase which is fluid at 25° C. up to a concentration of at least 50% by weight of surfactant, followed by a hexagonal or cubic type rigid liquid crystal phase at higher concentrations which is stable at least up to the drying temperature, and c) at least one water-soluble compound. The invention relates, in addition, to a process for preparing such a composition and to its use.
摘要:
Detergency builder/cobuilder preformulations, for improvedly stable/biodegradable detergent compositions, comprise intimate admixture of at least one polyimide polymer and at least one silicate, advantageously in the form of cogranulates thereof, said at least one polyimide polymer generating at least one biodegradable water-soluble polypeptide species when contacted with an aqueous medium having a non-alkaline pH.