摘要:
Novel organosiloxanes containing units of the formula in which Q represents a divalent group composed of carbon and hydrogen, and optionally oxygen or sulphur, and R represents a monovalent hydrocarbon group, the organosiloxanes also containing at least two silicon-bonded substituents selected from hydrogen atoms, alkoxy groups and alkoxyalkoxy groups. The organosiloxanes can be applied to textile fibres, optionally in conjunction with crosslinking agents and catalysts, to impart thereto resistance to soiling by oily substances.
摘要:
Silanes and organosiloxanes having the group wherein Q represents an olefinically-saturated divalent hydrocarbon group and Y represents -0-or -NH-. They can be prepared by the reaction of sodium sulphite or sodium bisulphite on the ester or amide and are useful as surface active agents.
摘要:
Method for treating hair which comprises applying thereto a composition containing an agent effective in reducing the disulphide linkages therein, e.g. ammonium thioglycollate, and an organosilicon compound having at least one silicon-bonded mercaptoalkyl group. The hair is then arranged in the desired configuration and the disulphide linkages restored by application of an oxidising agent. The method can be employed for the permanent waving or straightening of human or animal hair. Also claimed is a composition comprising an aqueous dispersion of an organosilicon compound having in the molecule at least one silicon-bonded mercaptoalkyl group and a reducing agent effective in reducing the disulphide linkages in hair.
摘要:
Silanes and organosiloxanes having the group wherein Q represents an olefinically-saturated divalent hydrocarbon group and Y represents -0-or -NH-. They can be prepared by the reaction of sodium sulphite or sodium bisulphite on the ester or amide and are useful as surface active agents.
摘要:
A foam control composition, which gives improved performance in high foaming detergent compositions, comprises (A) a liquid siloxane component which has a viscosity at 25°C of at least 7 x 10- 3 m 2 /s and which has been obtained by mixing and heating a triorganosiloxane-endblocked polydiorganosiloxane, a polydiorganosiloxane having at least one terminal silanol group and an organosiloxane resin, comprising monovalent and tetravalent siloxy units and having at least one silanol group per molecule, and (B) a finely divided filler having its surface made hydrophobic. Also described is a method for making such foam control compositions and detergent compositions containing such foam control compositions.
摘要翻译:在高发泡洗涤剂组合物中提供改进性能的泡沫控制组合物包含(A)在25℃下具有至少7×10 -3 m 2 / s的粘度的液体硅氧烷组分,以及 其通过混合和加热三有机硅氧烷封端的聚二有机硅氧烷,具有至少一个末端硅烷醇基团的聚二有机硅氧烷和有机硅氧烷树脂,其包含每分子具有至少一个硅烷醇基的单价和四价甲硅烷氧基单元,和(B)精细 分散填料,其表面疏水。 还描述了制备这种泡沫控制组合物和含有这种泡沫控制组合物的洗涤剂组合物的方法。
摘要:
A composition which is curable in the presence of moisture to an elastomer having improved adhesion to certain substrates, especially concrete. The composition comprises the product obtained by mixing together (A) a polydiorganosiloxane having terminal silanol groups, (B) an alkoxysilane R a Si(OR') 4-a wherein R represents a monovalent hydrocarbon or halogenated hydrocarbon group having 1 - carbon atoms, R' is a C 1 to C 4 alkyl group and a is 0 or 1, (C) organic titanium catalyst, (D) a reinforcing or semi-reinforcing filler and (E) a polydiorganosiloxane gum having a plasticity number (ASTM Test D-926) in the range from 100 to 200. The compositions are particularly suitable for use as sealants for building structures.
摘要:
Process for preparing organosiloxanes having in the mol- cute at least one unit of the general formula which R is C 1-4 alkyl or a phenyl group, R' represents an aliphatic or aromatic group composed of carbon, hydrogen and optionally oxygen and having a valency of n + 1, Y represents )H or alkoxy, is 0, 1 or 2, is 0 or 1 and n is 1, 2 or 3. The process comprises reacting an organosiloxane having silicon- onded hydroxyalkyl or hydroxyaryl substituents with the appropriate acid chloride. The organosiloxanes absorb ultra violet radiation and are seful as sunscreen agents. Also claimed are certain novel siloxanes which can be ob- ained by the said process.
摘要:
Siloxane-polyester compositions comprising (A) a siloxane-polyester copolymer, (B) a solvent for the siloxane-polyester copolymer, (C) a silane wherein one of the groups attached to silicon contains at least one amino group and (D) a silane having 3 or 4 alkoxy or alkoxyalkoxy groups attached to silicon any remaining groups being hydrocarbon or hydrocarbon ether groups. The compositions may also contain a siloxane condensation catalyst and are useful for coating substrates such as metals and plastics.
摘要:
Process for sealing a joint between adjacent members, for example expansion/contraction joints in highways, wherein the sealant composition is injected close to the floor of the joint and is shaped by a following shaping tool integral with the injection nozzle member. The process eliminates the separate tooling step. Also disclosed is a combined application nozzle and shaping tool for carrying out the process comprising a nozzle member (1) having a lower discharge orifice (3), a shaping tool (7) integral with the nozzle member (1 the shaping edge or surface extending downwardly but not coextensively with the discharge orifice (3).
摘要:
A composition characterized in that it contains (A) a polydiorganosiloxane having at least one silicon-bonded OX group, in which X represents hydrogen, alkyl or alkoxyalkyl, and at least one aminoalkyl or polyaminoalkyl acid salt substituent derived from a water-soluble organic or inorganic acid, (B) a silicon compound e.g. methyltrimethoxysilane which is soluble in (C) and which has per molecule more than two silicon-bonded groups reactive with the OX groups in (A), and (C) a water-soluble solvent for (A) selected from aliphatic alcohols, glycols and polyglycols and their ethers and esters. The compositions are useful as coating compositions and in particular can be diluted with water for application as water repellents to masonry and similar substrates.