Abstract: Oil in water emulsion compositions, and methods for preparing such emulsions, where the oil phase component of the emulsion contains at least 50 weight percent of a low molecular weight siloxane are disclosed. The oil in water emulsions are stabilized by a combination of a silicone polyether and anionic surfactant. The oil in water emulsions, and subsequently diluted emulsions therefrom, are stable with time and are useful in a variety of personal, medical, and household care formulations.

Abstract: The present invention relates to compositions comprising silicone-in-water emulsions and fragrance compositions. It also relates to hair care preparations comprising such compositions, which provide improved release of fragrance when applied to the hair and improved deposition of the fragrance on the hair. The invention is further related to methods of cleansing hair, which comprises applying a hair care preparation to the hair.

Abstract: A moisture curable composition capable of cure to an elastomeric body, comprising a polymeric material having not less than two hydroxyl or hydrolyzable groups an alkoxysilane curative and a catalyst comprising: a mixture and/or reaction product of a compound (i) M[OR]4 and compound (ii) M[OR?]x[Z]z, wherein M represents a metal having a valency of 4 selected from Group IVB of the Periodic Table, preferably titanium or zirconium.

Abstract: A continuous static polymerization reactor unit for the production of liquid polymers, in particular high viscosity organopolysiloxanes, in a predetermined viscosity range comprises a reactor (1) a supply means (10,25) for supplying monomers and/or oligomers to an inlet means (2), and an outlet means (5). The inlet means (2) is adapted for the introduction of a reaction mixture into a reaction chamber (3), and a means for introducing at least one viscosity controlling agent into the supply means is provided to form a reaction mixture with monomers and/or oligomers (11,13,15,12,14,16). The unit is adapted to maintain the values of temperature and flow rate of the resulting reaction mixture/polymer in the reaction chamber (3) substantially constant.

Abstract: In a process for the preparation of an emulsion of a silicone organic block copolymer in water, a polydiorganosiloxane having terminal reactive groups (A), an organic material having terminal groups (B) which are reactive with the groups (A) and a catalyst are emulsified in water with a surfactant and the resulting emulsion is subjected to conditions under which the reaction between groups (A) and (B) proceeds in the presence of the catalyst, thereby forming a copolymer chain containing polysiloxane blocks and blocks of organic material. Preferred emulsions comprise a copolymer comprising polydiorganosiloxane blocks and organic blocks, having a viscosity in the range 10 to 1000000 Pa.s and a mean particle size of 0.3 to 1000 micrometers.

Abstract: This invention provides a process for the manufacture of organopolysiloxane compositions, an in particular sealants, comprising mixing a polymer, preferably silicone, a surface active filler, an organosilane such as a cross-linker, a catalyst and an adhesion promoter, in which the organosilane (iii) is mixed with surface active filler (ii) prior to the introduction of the adhesion promoter. The resulting sealant compositions have improved adhesion properties.

Abstract: The present invention relates to use of an inhibitor compound in an organosilicon composition for inhibiting curing of the organosilicon composition by a hydrosilylation reaction at a temperature of 40° C. to 100° C., or 100° C. and above, and a pressure of 1×106 N/m2 to 5×106 N/m2, or 5×106 N/m2 and above. In a preferred application the organosilicon composition cures to form a silicone gel or elastomeric seal or plug within an oil or gas well. Preferred inhibitor compound is 1-ethynyl-1-cyclopentanol or 1-ethynyl-1-cyclohexanol.

Abstract: A silicone composition comprising a polymer having siloxane units and two or more silicon bonded hydroxyl or hydrolyzable groups per molecule; a crosslinker; an extender material which is either an alkyl substituted aryl compound such as a heavy alkylate, or a alkylcycloaliphatic compound; and a u.v. light stabilizer comprising a benzotriazole moiety. These compositions are useful, for example as room temperature vulcanizable sealants. They retain color clarity or transparency, even on ageing.

Abstract: A composition which provides gas, flavor, and aroma barrier to substrates, where the composition is formed by mixing an ethylenically unsaturated acid, a bis-silane and a polyamine.

Abstract: Disclosed is a method of preparing a stable composition of radically copolymerizable monomers, said composition containing firstly at least one monomer which has at least one urea function in its formula and secondly at least one monomer which does not have an isocyanate function in its formula, said method comprising preparing said monomer(s) having urea function(s) by reaction of two types of reagent: at least one radically copolymerizable monomer which has at least one isocyanate function in its formula with at least one amine selected from primary and secondary amines, and incorporating said monomer(s) which does(do) not have an isocyanate function in its(their) formula, prior to said reaction, together with one of said reagents, before adding the other of said reagents, and/or during the addition of said reagents, and/or after said reaction.

Abstract: A foam control agent comprises (A) an organopolysiloxane material having at least one silicon-bonded substituent of the formula X—Ph, wherein X denotes a divalent aliphatic hydrocarbon group and Ph denotes an optionally substituted aromatic group, (B) an organosilicon resin and (C) a hydrophobic filler. The organosilicon resin (B) preferably consists of siloxane units of the formula R′aSiO4−a/2 wherein R′ denotes a hydroxyl, hydrocarbon or hydrocarbonoxy group, particularly trialkylsiloxy units and SiO4/2 units, wherein a has a value of from 0.5 to 2.4. The foam control agent may be provided as an emulsion or as a particulate material. It is especially useful as a detergent foam control agent.

Abstract: A foam control agent, comprising (A) an organopolysiloxane material having at least one silicon-bonded substituent of the formula X-Ph, wherein X denotes a divalent aliphatic organic group bonded to silicon through a carbon atom and Ph denotes an optionally substituted aromatic group, (B) a water-insoluble organic fluid, (C) an organosilicon resin and (D) a hydrophobic filler. The foam control agent may be provided as an emulsion or as a particulate material. It is especially useful as a detergent foam control agent.

Abstract: The present invention relates to novel compounds of the naphthopyran type which have an annelated carbocycle in position 5,6. These compounds are of formula (I) given below: in which A is an alicyclic ring which is optionally annelated with an aromatic ring and in which two adjacent R3 can together form at least one ring, for example a benzo group. These compounds (I) possess interesting photochromic properties. The invention also relates to the method of preparing these compounds (I), as well as their applications as photochromes and compositions and (co)polymer matrices comprising them.

Abstract: A microemulsion is formed by combining (a) water, (b) a nonionic surfactant, a cationic surfactant, an anionic surfactant, or a mixture of such surfactants, (c) a linear non-volatile polysiloxane, (d) an amine functional polysiloxane, and (e) a carboxylic acid. The mixture is mechanically agitated until a microemulsion is obtained containing polysiloxane particles having an average diameter of less than 50 nanometer (0.05 micron/500 angstrom Å). These microemulsions are useful in paper coating, textile coating, and home care applications. They can also be used to deliver silicone polymers of tailored rheological properties to the human body.

Abstract: A process for treating a surface of a substrate to improve the oxygen, carbon dioxide, flavor and odor gas barrier properties of the substrate with an organic acid having at least two acid substituents selected from the group consisting of a polybasic carboxylic acid, a polymer of an unsaturated carboxylic acid and a co-polymer of an unsaturated carboxylic acid, by applying the acid on to the substrate to form a layer, and exposing the layer to moisture. A variety of other types of additives may be included in the coating applied to the substrate with the acid including compounds of the formula RaX3−aSi(CH2)nY, a condensation catalyst, a solvent, and/or a filler.

Abstract: The invention relates to novel naphthopyran- and phenanthropyran-type compounds having a carbobicycle annelated in 5,6- position. These compounds have formula (I) given below: These compounds (I) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.

Abstract: The principal object of the present invention is organic lens molds, constituted wholly or in part of at least one specific inorganic glass, advantageously strengthened by a chemical tempering or a thermal tempering. Said glass has the following composition, expressed in percentages by weight: SiO2 56-66, Al2O3 2.5-10, B2O3 0.5-7, Li2O 0-3, Na2O 8-15, K2O 3-12, with Li2O+Na2O+K2O 12-20, ZnO 2-12, MgO 0-3, TiO2 0-0.5, ZrO2 1-9, CaO 0-1, BaO 0-2, SrO 0-2, with MgO+CaO+SrO+BaO 0-5, Cl 0-0.5, As2O3+sb2O3 0-1. The invention also deals with novel inorganic glasses which have the above composition with a single exception relative to the Al2O3 content: Al2O3 2.5-4.

Abstract: The invention relates to novel benzopyran-type compounds having an aromatic heterocycle annelated in position 7,8 and a carbocycle annelated in position 5,6. These compounds have the formula (I) given below: These compounds (I) have interesting photochromic properties. The invention also relates to their preparation, to their applications as photochromes, as well as to the compositions and (co)polymer matrices containing them.

Abstract: The object of the present invention is colorless inorganic glasses, as well as products manufactured from said glasses. Said glasses are of the type containing copper halides or copper cadmium halides and having a sharp optical absorption cutoff between 370 nm and 425 nm essentially having the composition below, expressed in cationic percentages: 23-73% SiO2 15-45% B2O3  0-24% Al2O3  0-12% Li2O  0-20% Na2O  0-12% K2O 0-5% CaO + BaO + SrO 0.125-1%    Cu2O 0-1% CdO 0-5% ZrO2 with   0-1.75% Cl 0.

Abstract: For subject, the present invention has novel naphthopyran derivatives of formula: optionally substituted in position(s) 2, 3, 4, 6, 7, 8, 9 or/and 10; the substituent Z in position 5 being of formula —C(R1)(R2)(OR3). The invention also relates to compositions and (co)polymer matrices containing such derivatives. Said derivatives have interesting photochromic properties.