摘要:
The invention relates to silicon oils, more particularly, to a novel method for the preparation of a silicon oil by polymerization and rearrangement of cyclic siloxanes in the presence of an alkaline catalyst and a co-catalyst which is a cryptand (macroheterobicyclic diamine) acting as a polymerization accelerator.
摘要:
The invention relates to silicon oils, more particularly, to a novel method for the preparation of a silicon oil by polymerization and rearrangement of cyclic siloxanes in the presence of an alkaline catalyst and a co-catalyst which is a cryptand (macroheterobicyclic diamine) acting as a polymerization accelerator.
摘要:
The invention relates to novel hybrid compounds comprising at least one polyon entity (Po)—for example oligomer or polymer—in which at least one of the hydroxyl functions of Po is substituted by at least one entity A that can be of a variable nature, for example polymer (e.g. polyorganosiloxane-POS), hydrocarbonated or mineral. The bond Ro between the entity Po and the entity A is obtained by means of “click chemistry” and corresponds to formula (II.1) or (II.2), Z representing —CH— or —N—. A is an entity selected from the group comprising the various polyols of Po, polyorganosiloxanes (POS), polyalkylene glycols, polyamides, polyesters, polystyrenes, alkyls, alkenyls, alkynyls, aryls, and combinations thereof, in addition to mineral materials such as silica and the combinations thereof. Said hybrid components can be used as emulsifiers, especially for cosmetics.
摘要:
The invention relates to novel hybrid compounds comprising at least one silicone entity (Sil) in which at least one of the silicons of Sil is substituted by at least one unit—Ro-B, B being an entity of a variable nature, for example polymer, hydrocarbonated or mineral, selected from a group comprising polyols (e.g. saccharides), silicones, polyalkylene glycols, polyamides, polyesters, polystyrenes, alkyls, alkenyls, alkynyls or aryls, in addition to mineral materials such as silica and the combinations thereof. The bond Ro between the entity Sil and the entity B is obtained by means of “click chemistry” and corresponds to formula (II.1) or (II.2), Z representing a carbon atom or a nitrogen atom. Said hybrid components can be used as emulsifiers, especially for cosmetics.
摘要:
The invention relates to a particular polymer which is derived from a copolymer polysaccharide formed by a main chain comprising similar or different anhydrohexose units and branches including at least one neutral or anionic anhydropentose and/or anhydrohexose unit. Moreover, the invention relates to the use of said polymer in the treatment of aqueous media, in particular the treatment of aqueous effluents containing heavy metals, the treatment of waste water, drinking water and for sludge conditioning. Said derivative polymer comprises one or more units bearing an oxime function at least at position C2.
摘要:
Detergent formulation for washing laundry characterized in that it comprises: from about 10 to 80% of its weight of at least one hydrated zeolite (z) of formula xNa.sub.2 O.yAl.sub.2 O.sub.3.zSiO.sub.2.wH.sub.2 O in which, if y=1, x is from about 0.7 to 1.1, z is from about 1.3 to 3.3 and w is from about 10 to 264 from about 0.005 to 5%, of its weight of a least one polyalkylene terephthalate-polyoxyalkylenebisurethane (PET-UPOEU) copolymeric nonionic or anionic anti-soiling agent, said copolymer being obtained by reaction of a polyalkylene terephthalate (PET) and a polyoxyalkylnebisurethane (UPOEU), the molar ratio of the NCO functions to all of the OH functions or OH function equivalents being from about 0.5 to 1, from about 3 to 40%, of its weight of a least one saturated C.sub.5 -C.sub.24, aliphatic or hydroxyaliphatic alkyl sulphate anionic surfactant (FAS) optionally condensed with approximately 0.5 to 30 mol of ethylene oxide and/or propylene oxide, optionally, up to 15% of its weight of a nonionic surfactant, it not being possible for more than 5% by weight of the said detergent formulation to consist of an alkylbenzenesulphonate. It has been observed that this PET-UPOEU type of anti-soiling agent, present in low amount in detergent compositions based on zeolite and aliphatic alkyl sulphate, has advantageous anti-soiling properties.
摘要:
Oligomers with polydiene sequences and crosslinkable grafts are useful as coatings for protecting metal surfaces as well as inking buffers. The oligomers contain a polydiene sequence of 1-100 diene links, from 1 to 20 polar functional groups, and from 1-20 acrylic or methacrylic groups. The oligomers have the general formula: ##STR1##
摘要:
The invention relates to novel hybrid compounds containing at least one polysaccharide entity (PS), such as guar, in which at least one hydroxyl function is substituted by at least one A polyoxyalkylene entity (PEG). The swivel Ro between the entity PS and the entity A is obtained by click chemistry and has the following formula (II.1) or (II.2), in which Z is a carbon or nitrogen atom. These hybrid compounds can be used as emulsifiers, particularly in cosmetics.
摘要:
A method for preparing polyorganosiloxanes (POS) by a ring-opening polymerization and/or linear, non-linear or cyclic POS redistribution in the presence of a nucleophilic carbene. The initial efficiency of the POS conversion is substantially increased at low temperature, resulting in less residual content of initial POS.
摘要:
The invention relates to an active substance vector multiparticulate system and to the production and use thereof. The object of the invention is an active-substance vector multiparticulate system comprising one or several active substances included in a hydrophilic organic matrix comprising at least one hydrosoluble and/or hydrodispersable anionic polymer which is insolubilized by a metallic cation. The invention can be specifically used in the food industry, detergents and agrochemistry.