Abstract: Aqueous compositions comprising water having dispersed therein (A) a cationic compound which is substantive to water rinse on textile fabrics and (B) a mixture of a high viscosity polydiorganosiloxane and one or more methylsiloxanes having from 2 to 8 silicon atoms in the molecule.The compositions are useful as fabric conditioners in domestic and commercial laundry operations.

Abstract: A shampoo composition comprising from 10 to 60% by weight of (a) one or more anionic surfactants, from 1 to 15% by weight of (b) one or more nonionic surfactants, from 0.1 to 25% by weight of (c) a silicone component, selected from polydiorganosiloxanes and cyclodiorganosiloxanes wherein substantially all organic substituents are lower alkyl groups, from 6 to 18% by weight of (d) a salt of saccharin and from 20 to 70% by weight of (e) water. The saccharin salt is preferably a sodium salt, which acts as optical index adjusting agent to provide a clear shampoo and also renders the foam creamier.

Abstract: An optical fibre cable comprises a plurality of optical fibre structures each of which comprises an optical fibre surrounded by at least one sheath layer. The optical fibre structures are separably held together side-by-side. The optical fibre cable is propellable along a tubular pathway by fluid drag of a gaseous medium passing over the cable, and each of the individual optical fibre structures is preferably also so propellable when the said structures are separated from one another.

Abstract: Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2 or 3 and c is 0 to 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.

Abstract: The specification discloses a process for coloring hair in which certain polysiloxanes including siloxane units having a silicon bonded hydroxy group are employed to provide improved depth of color or color retention. Preferably the polysiloxanes are employed as a treatment on hair prior to or after application of colorant.

Abstract: The specification describes and claims a method for the de-emulsification of emulsions of water and crude oil which comprises treating the emulsion with an organosiloxane, a siloxane unit having a quaternary ammonium group R'N.sup.+ (R.sup.2).sub.3 X.sup.- linked to its silicon atom, R' represents a divalent hydrocarbon group linking the silicon and nitrogen atoms, each R.sup.2 represents an alkyl group having up to 20 carbon atoms or a polyoxyalkylene chain having 3 to 50 oxyalkylene groups, and X.sup.- represents a halogen ion. Examples of organosiloxanes given include those composed exclusively of the said units, and copolymers composed of these siloxane units and siloxane units according to the general formula R.sub.b (SiO.sub.4-b)/2 in which each R is a substituted or unsubstituted hydrocarbon group of up to 10 carbon atoms, and b has the value 0. 1, 2 or 3, for example those according to the average general formulaR.sub.3 SiO(R.sub.2 SiO).sub.x (RZSiO).sub.y SiR.sub.

Abstract: The specification describes and claims a method of producing a foamed mass having a density of less than 150 kg/m.sup.3 adherent to surfaces of a cavity which comprises inserting into the cavity a foamable composition formed by mixing impinging jets of two or more parts of a foamable silicone composition capable of curing at 20.degree. C. within 2 minutes to provide a foamed mass having a density of less than 150 kg/m.sup.3. The Compositions comprises (a) one or more polysiloxanes having not less than three alkylhydrogensiloxane units per molecular, (b) one or more polysiloxanes having not less than two silicon-bonded hydroxyl groups per molecule, (c) one or more compounds having carbon-bonded hydroxyl groups present in a proportion to provide from 0 to 2% by weight of the composition, (d) a polyorganosiloxane compriing [F(CF.sub.2).sub.m (CH.sub.2).sub.n O].sub.p SiO.sub.4-p/2, R.sub.3 SiO.sub.1/2 and SiO.sub.

Abstract: Polysilanes of the general formula (RSi).sub.n wherein R is an alkyl, aryl, alkaryl or aralkyl group having 4 to 18 carbon atoms and where n has a value of at least 8, are soluble in a liquid organic medium when R is a stearically hindered or large group. Compositions comprising the organic liquid medium and dissolved therein the polysilane are also described.

Abstract: A coupling between first and second tubular members comprising a flexible retaining ring fitted over the first tubular member below an annular enlargement thereof and entering into screw-threaded engagement with internal screw-threading on the second tubular member or a connector element attached thereto. The retaining ring is a split-ring member whose longitudinally extending slit enables it to be passed lengthwise over the first tubular member and is so dimensioned that on re-assuming its original form, the opposed margins of the slit abut and the retaining ring is held against the first tubular member against removal therefrom by the enlargement, and the second tubular member or connecting member is coupled to the first tubular member. A sealing member is positioned at the coupling to form a fluid-tight seal at the junction of the tubular members.

Abstract: Siloxane-polyester compositions comprising (1) a siloxane-polyester copolymer resin (2) one or more solvents for the siloxane-polyester copolymer, (3) a silane wherein one of the groups attached to silicon is an epoxy-substituted organic group, at least two of the remaining valencies of the silicon atom being satisfied by alkoxy or alkoxyalkoxy groups, and (4) a titanium chelate.The presence of (3) and (4) improves the rate of cure of the siloxane-polyester, and the compositions are useful for providing decorative and/or protective coatings on metals, plastics and other substrates.

Abstract: Process for silylating an organic or an organosilicon compound having at least one hydroxyl group bonded to carbon or to silicon, wherein the compound is contacted with both (i) a bis-triorganosilyl(alkylenediamine) and (ii) a triorganohalosilane.The process can be employed for the silylation of intermediates in the production of pharmaceuticals.

Abstract: Composition which comprises a mixture of (A) a polydiorganosiloxane having a viscosity of from 200 to 100,000 cP at 25.degree. C. and having at least two silicon-bonded vinyl groups, (B) an organohydrogensiloxane, (C) a platinum catalyst, (D) a substance which inhibits the reaction between (A) and (B) in the presence of (C) e.g. an acetylenic alcohol, and (E) a blowing agent selected from p,p'-oxybis(benzenesulphonylhydrazide) and dinitrosopentamethylene tetramine.The composition can be converted by heat into an elastomeric sponge and is useful for the production of articles such as seat cushions, heat and sound insulation and shock absorbers.

Abstract: Organosiloxane-oxyalkylene copolymers in which at least one silicon atom of an organosiloxane unit has attached thereto a group ##STR1## in which X is a divalent hydrocarbon group, R is an alkylene group, n is an integer of at least 2, Z is an organic substituent containing an epoxy group, R' is lower alkyl, vinyl or phenyl, R" is alkyl or alkoxyalkyl and a is 0 or 1, at least 40 percent of the total substituents in the copolymer being methyl.The copolymers are film forming and may be applied to continuous or porous substrates from aqueous or non-aqueous solutions.

Abstract: Siloxane-polyester compositions comprising (1) a siloxane-polyester copolymer resin (2) a silane wherein one of the groups attached to silicon is an organic group containing at least one amino group, the remaining valencies of the silicon being satisfied by alkoxy, alkoxyalkoxy, methyl or phenyl groups there being present at least two alkoxy or alkoxyalkoxy groups, (3) a solvent for the siloxane-polyester copolymer and (4) a titanium chelate.The presence of (2) and (4) improves the rate of cure of the siloxane-polyester, and the compositions are useful for providing decorative and protective coatings on metals, plastics and other substrates.

Abstract: 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.

Abstract: Process for the treatment of fibres e.g. of nylon or polyester/cotton in which the fibres are contacted with a polydiorganosiloxane having at least one --OM group, in which M represents H, alkyl or alkoxyalkyl, and at least one quaternary ammonium salt substituent --RN.sup.+ (R").sub.2 R'X.sup.- in which R represents a divalent hydrocarbon or hydrocarbonoxy group, R' represents a monovalent hydrocarbon group or an alkyleneoxy or polyalkyleneoxy group, each R" represents methyl or ethyl and X represents a halogen atom.The treatment facilitates the removal of oily stains during laundering and may be applied in conjunction with other silicones.

Abstract: The removal of oily soil from textile fibres which have been treated with organosiloxanes, e.g. for improved handle or crease recovery, is facilitated if the fibres are also treated with an organosilane of the general formulaY.sub.3 SiRN.sup.+ (R").sub.2 R'X.sup.-in which Y is hydrocarbon, alkoxy or alkoxyalkoxy, at least one Y being alkoxy or alkoxyalkoxy, R represents a divalent hydrocarbon or hydrocarbonoxy group, R' represents a monovalent hydrocarbon group or an alkyleneoxy or polyalkyleneoxy group, each R" represents methyl or ethyl and X represents a halogen atom.

Abstract: Process for the preparation of organosiloxane polymers wherein there are reacted together (A) a silanol-terminated polydiorganosiloxane in which at least 50% of the organic substituents are methyl, and (B) a quaternary ammonium silaneRR'.sub.2 Si--Q--N.sup.+ X.sub.2 YZ.sup.31wherein R' represents an alkoxy or alkoxyalkoxy group, R represents alkyl, phenyl, vinyl or a group as defined for R', Q represents a divalent group, X represents alkyl, aryl, aralkyl or alkaryl, Y represents a monovalent hydrocarbon group or the group (--OM).sub.a OD, wherein M represents an alkylene group having 2 or 3 carbon atoms, a has a value of from 1 to 20 and D represents H, alkyl or acyl, and Z is a halogen atom.The organosiloxane polymers can be crosslinked and are useful for the treatment of textiles.

Abstract: A safety locking arrangement is provided on a valve for control of fluid flow comprising a valve body having a seat with a flow passage passing therethrough and a valve closure member located within the body. The valve closure member is adapted to engage the seat to effect closure of the valve. The valve closure member is carried by a cap adapted to enter into screw-threaded engagement with the valve body at the mouth thereof. To ensure retention of the cap on the body, the cap additionally enters into screw-threaded engagement with an annular retaining means disposed around and formed separately from the valve body, with the valve body itself being so formed in the mouth region that the retaining means cannot be withdrawn therefrom merely by rotation and/or displacement lengthwise of the valve body.

Abstract: A pigmented composition which is curable to a silicone rubber having improved color retention under conditions involving exposure to a corona discharge. The composition comprises (A) a curable polydiorganosiloxane, (B) a filler, (C) an organic peroxide curing agent and (D) a pigment which is an inorganic calcined complex containing Co and Al.