Abstract: The invention provides a method of producing a reactive silicon group-containing polyether oligomer which comprises reacting (a) a polyether oligomer having main chain of a polyether and, in each molecule, at least one unsaturated group represented by the general formula (1): H2C═C(R1)—R2—O—  (1) (in the formula, R1 is a hydrocarbon group containing not more than 10 carbon atoms and R2 is a divalent organic group containing 1 to 20 carbon atoms and one or more species selected from the group consisting of hydrogen, oxygen and nitrogen atoms as a constituent atom) or the general formula (2): HC(R1)═CH—R2—O—  (2) on a side chain or at a terminus with (b) a reactive silicon group-containing compound in the presence of (c) a group VIII transition metal catalyst to introduce the reactive silicon group into said polyether oligomer (a), wherein the reaction is carried out in the presence of (d) a sulfur compound.

Abstract: A highly storage-stable organopolysiloxane composition capable of the long-term retention of its surface-modifying activities, such as antistatic and anticlouding activities is disclosed. The composition comprises a first polyoxyalkylene-functional diorganopolysiloxane that is free of amino, carboxyl, and epoxy groups, a second polyoxyalkylene-functional diorganopolysiloxane that contains an amino-functional organic group, and water.

Abstract: A cathodic electrocoating composition comprises an aqueous carrier, a film forming binder, comprising an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent, dispersed in the carrier, and a novel additive comprising the reaction product of (1) a polyoxy alkylene di or monoamine; (2) a glycidoxy alkyl alkoxy silane; and (3) a glycidyl compound selected from the group consisting of a glycidyl ester of a carboxylic acid and an alkyl glycidyl ether, which reaction product is hydrolyzed in the presence of acid and water to convert alkoxysilane moieties to silanol moieties. The electrocoat composition produces coatings having a smoother appearance with better edge coverage and fewer craters.

Abstract: The present invention relates to linear polyether-polysiloxane copolymers of the general formula A(BC)nBA, in which linear polyether and linear polysiloxane units are linked via Si—C bonds, and to a process for their preparation.

Abstract: wherein A is hydrogen or a residue afforded by the removal of n hydroxyl groups from an m-valent alcohol, each R is independently a monovalent hydrocarbon group free of aliphatic unsaturation, each R1 is independently a divalent hydrocarbon group containing at least 2 carbon atoms, m and n are natural numbers wherein m≧n, p is 0 or 1, and Y is a phenol group having the formula: wherein R3 is alkyl and q is from 0 to 4. Also, a method of preparing a phenol-functional organosilicon compound.

Abstract: The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.

Abstract: A method for the production of organosilanes functionalized in 3-position by reacting suitable allyl compounds with hydrogen silanes in the presence of a multielement catalyst containing platinum and at least one other element.

Abstract: A process for preparing an alkoxysilane with an acidic chloride content of less than 10 ppm by weight, comprising:reacting a chlorosilane with an alcohol in a water-free and solvent-free phase to form a product mixture containing alkoxysilane and residual acidic chloride, with removal of resultant hydrogen chloride from the product mixture,then adding liquid or gaseous ammonia, in an amount corresponding to a stoichiometric excess, based on the content of acidic chloride, to form an ammonia-containing product mixture,treating the ammonia-containing product mixture at a temperature between 10 and 50.degree. C., wherein the ammonia and acidic chloride undergo neutralization, to form a crude product, and optionally, then separating off a salt formed in the course of neutralization, from the crude product, andrecovering the alkoxysilane by distilling the crude product.

Abstract: A composition which is a silicone polyether containing arylalkyl groups, most preferably an arylalkyl group such as the 2-phenylpropyl group, i.e., --CH.sub.2 CH(C.sub.6 H.sub.5)CH.sub.3. The compositions demonstrate improvements in emulsification over silicone polyethers without such arylalkyl groups. The compositions have a formula generally corresponding toR.sub.3 SiO(R.sub.2 SiO).sub.x (RQSiO).sub.y (RQ'SiO).sub.z SiR.sub.3in which R is an alkyl group, Q is a polyoxyalkylene block, Q' is an arylalkyl radical, x is 0-500, y is 1-50, and z is 1-50. The compositions and emulsions containing the compositions have general utility, but are especially useful in the personal care arena.

Abstract: This invention relates to the compounds of 2,6-di-t-butyl-4-[(dimethyl-4-methoxyphenylsilyl)methyloxy]phenol and 2,6-di-t-butyl-4-[(dimethyl-2-methoxyphenylsilyl)methyloxy]phenol, polymorphs thereof and their pharmaceutically acceptable salts, useful as antiatherosclerotic agents.

Abstract: Novel organosilicon compounds containing 1-alkenyloxy groups and comprising units of the formula ##STR1## where R are identical or different and are each a monovalent, halogenated or unhalogenated hydrocarbon radical having from 1 to 18 carbon atom(s) per radical,X are identical or different and are each a chlorine atom or a radical of the formula --OR.sup.1,where R.sup.1 is an alkyl radical having from 1 to 8 carbon atom(s) per radical which may be substituted by an ether oxygen atom,a is 0 or 1, b is 0, 1, 2 or 3, c is 0, 1, 2 or 3, and the sum a+b+c.ltoreq.4,A is a radical of the formula ##STR2## where x is 0 or 1 and y is 0 or 1, with the proviso that the sum x+y is 1 or 2,z is 0 or an integer from 1 to 12,R.sup.2 is a hydrogen atom or a methyl radical,R.sup.3 can be identical or different and are each a linear or branched alkylene radical having from 1 to 6 carbon atom(s) per radical,R.sup.

Abstract: The present invention relates to diesel fuel and lubrication oil defoaming agents, and crude oil demulsifiers, as well as methods for using same. In particular, the defoaming agents and demulsifiers are comprised of copolymers which have structures constituting a backbone of polysiloxane onto which is grafted an organic group. These structures comprise a polymer of the formula MD.sub.x D'.sub.y D".sub.z M, where M is O.sub.0.5 Si(CH.sub.3).sub.3, D is a OSi(CH.sub.3).sub.2, D' is OSi(CH.sub.3)R, D" is OSi(CH.sub.3)R', R is a polyhydric C.sub.6 -C.sub.28 organic group, R' is a phenol derivative or a long chain aliphatic group or polyethers, z is between 0 and 80, x+y+z is between 10-200, x/z is .gtoreq.1, and x/(y+z) is between about 1 and about 5, or formula M'D.sub.a M' where M' is O.sub.0.5 Si(CH.sub.3).sub.2 R, a is between 4-10, and R and D are the same as defined above.

Abstract: This Invention discloses the use of ascorbic and citric acid, their salts, ethers, acid esters and mixtures thereof in a method for the prevention of peroxide formation, and/or for decomposing peroxides already formed in polyethers. Hereby, the polyethers are made reactive to hydrosilylation by silanes and hydrosiloxanes. When the polyether treatment is done with mixtures of ascorbic acid and sodium ascorbate and allyl polyethers, the hydrosilylation product contains reduced levels of propanal. The copolymers prepared using the treated polyethers are efficient stabilizers of flexible polyurethane foams and rigid polyurethane and polyisocyanurate foams.

Abstract: The present invention discloses non-hydrolyzable, block, (AB).sub.n A type, copolymers comprising alternating units of polysiloxane and amino-polyalkyleneoxide and provides a method for the preparation of these copolymers. Also provided is the use of these copolymers as softeners, in particular durable, hydrophilic textile softeners, which improve tactile properties of the textiles substrates treated with the commercial soil release finishes, without substantially detracting from their properties. The copolymers of the present invention have alternating units of polysiloxane [X(C.sub.a H.sub.2a O).sub.b R.sup.2 [(SiO(R.sup.1).sub.2 ].sub.c Si(R.sup.1).sub.2 R.sup.2 (C.sub.a H.sub.2a O).sub.b X] and polyalkyleneoxides [YO(C.sub.a H.sub.2a O).sub.d Y] wherein R.sup.1 is a C.sub.1 to C.sub.4 alkyl, preferably methyl, R.sup.

Abstract: The present invention relates to a siloxane-oxyalkylene copolymer surfactant having the formula MD.sub.x D'.sub.y M wherein M represents (CH.sub.3).sub.3 SiO.sub.1/2 or R(CH.sub.3).sub.2 SiO.sub.1/2, D represents (CH.sub.3).sub.2 SiO.sub.2/2, D' represents (CH.sub.3)RSiO.sub.2/2, and the value of x+y is from 48 and 220, and the ratio x/y is from 5 to 15 inclusive. In the above formulae for M and D', R is a polyether-containing substituent selected from the group consisting of (1)--C.sub.n H.sub.2n O(C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b R' moieties having weight average molecular weights of from about 2300-3200 and wherein n is 3-4, the ratio a/b is from 0.5 to 1.3 inclusive, R' represents hydrogen, an alkyl group of 1-4 carbon atoms or --C(O)CH.sub.3 and (2)--C.sub.n' H.sub.2n' O(C.sub.2 H.sub.4 O).sub.a' (C.sub.3 H.sub.6 O).sub.

Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

Abstract: Silicone compositions that are functionalized with 1,2 or 1,3 glycol bearing substituents render antiperspirant salts soluble, partially soluble therein or partially miscible therewith. Such functionalized silicones in conjunction with antiperspirant salts produce clear antiperspirant gel sticks.

Abstract: The invention provides novel cross-linkable, photoactive silane derivatives and mixtures with 3-aryl-acrylic acid esters and amides. The present invention also provides orienting layers for liquid crystals, and non-structured and structured optical elements and multi-layer systems based on the silane mixtures and derivatives.

Abstract: The present invention relates to a highly enantioselective process for the preparation of enantiomerically pure cyclopentane- and -pentene .beta.-amino acids of the general formula (I) ##STR1## in which A and L, A and D or E and L, D and E, R.sup.2, R.sup.3, T and R.sup.1 have the meaning given in the description.

Abstract: Polysiloxane polyols and curable coating compositions containing such polysiloxane polyols are disclosed. When present as a component in both ambient-cure and thermal-cure coating compositions the polysiloxane polyols provide improved adhesion, pot-life, tack-times, mar resistance, excellent appearance, film hardness and corrosion resistance. A method for preparing such polysiloxane polyols is also disclosed.

Abstract: A method for preparing a polyester polyurethane flexible slabstock foam by reacting an organic polyisocyanate with a polyester polyol in the presence of urethane catalyst, water as a blowing agent and a silicone surfactant characterized in that the silicone surfactant comprises the reaction product of 1,1,1,3,5,5,5-hepta(hydrocarbyl)trisiloxane coupled with polyalkyleneoxide mono allyl ether and capped with a succinic anhydride.

Abstract: Polyether modified fluoroalkylsiloxanes having the general structure of Formula (I), Formula (II) or Formula (III): ##STR1## wherein x is about 0 to 500, y is about 1 to 50, z is about 1 to 50, R=C.sub.p H.sub.2p --(OC.sub.2 H.sub.4).sub.n --(OC.sub.3 H.sub.6).sub.n).sub.m --OR' in which p is about 2 to 5, n is about 0 to 50, N is about 0 to 50, and one of n or m must be >0, and R'=H, an alkyl group with 1-4 carbons, or an acetyl group and R.sub.f =C.sub.a H.sub.2a --O.sub.b --C.sub.c H.sub.2c --C.sub.d F.sub.2d+1 in which a is 3 or 4, b is 0 or 1, c is 0 or 2-4 and d is 4-12 with the provisos that if b=0, then c=0, and that if b=1, then c=2-4; z.sub.1 is about 0 to 50 and y.sub.1 is about 0 to 50, are useful to reduce the coefficient of friction and to increase mar resistance of coatings, to increase spreadability and wettability of coating formulations, and as foam control agents.

Abstract: Alkene precursors for preparing dialkyl-substituted dioxetanes. The dioxetanes are useful for the detection of triggering agents including enzymes.

Abstract: Disclosed is an improved process for the manufacture of silicone containing copolymers via a hydrosilation reaction, in which the catalyzed reaction of organohydrosiloxane and olefinic polyether is carried out at between 20.degree.-120.degree. C., preferably 70.degree.-120.degree. C., under a vacuum between 750-1 mmHg. The reaction under these conditions results in a copolymer of a higher quality as compared to copolymers made by the traditional method without the benefit of a vacuum. If desired, the reaction can be taken to its clear point in a volatile compatibilizing solvent (for example toluene, xylene, or isopropyl alcohol), this solvent can then be removed from the reaction system, and another less volatile solvent, such as dipropylene glycol or polypropylene glycol, may then be added.

Abstract: A novel process for preparing organosilicon compounds containing (meth)acxyloxy groups is described, in which alkoxylated alk-2-yne 1,4-di(meth)acrylates (1) of the formula ##STR1## where R.sup.2 is a hydrogen atom or a methyl radical,R.sup.3 is a linear or branched alkylene radical having from 1 to 6 carbon atoms per radical andR.sub.4 is a linear or branched alkylene radical having from 1 to 6 carbon atoms per radical, andz is an integer from 1 to 12,are reacted with organosilicon compounds (2) comprising units of the formula ##STR2## where R is an identical or different monovalent, optionally halogenated hydrocarbon radical having from 1 to 18 carbon atoms per radical, ande is 0 or 1, on average from 0.01 to 1.0,f is 0, 1, 2 or 3, on average from 0.0 to 3.

Abstract: The present invention relates to siloxane copolymers containing vinyloxy groups and a method of preparing the siloxane copolymers. The copolymers of the present invention are useful for the production of coatings which can be crosslinked by light and radiation-curable printing inks.

Abstract: Oligomeric fluoroalkylsiloxanes corresponding to the formula: ##STR1## wherein x is 0 to 3, y is 0, 1, or 2; z is 0 or 1; x+y>0, and R has the formula --C.sub.a H.sub.2a --O.sub.b --C.sub.d H.sub.2c --C.sub.d F.sub.2d+1 in which a is 2-4, b is 0 or 1, c is 0-8 and d is 4-12, and compositions thereof with an oil, are useful as spreading agents and in agricultural applications.

Abstract: There is now provided a method for making a polyisocyanate based rigid closed cell foam by reacting an organic isocyanate and a polyol composition containing a polyol having polyester linkages and a number average molecular weight of 400 or more, and at least about 8 php of a silicone-containing surfactant polymer, in the presence of an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon blowing agent. Either mixed into the polyol composition at the time of foaming, mixed into an isocyanate, or both, is an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon.

Abstract: A polysilane is disclosed whose main chain skeleton has a repeating unit represented by the general formula (1): ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkyl cycloalkyl, aryl or aralkyl group; X is a atom having an unpaired electron or a group containing an atom having an unpaired electron and represents an oxygen atom, sulfer atom or a nitrogen atom-containing group represented by the general formula (2): ##STR2## wherein R.sub.2 represents a substituted or unsubstituted alkyl, cycloalkyl, aryl or aralkyl group; Ar.sub.1 represents a substituted or unsubstituted arylene group; and Ar.sub.2 represents a substituted or unsubstituted aryl group, a group having an aromatic amine skeleton or a group ethenylene skeleton; a process for producing the polysilane; and a dihalosilane which is the starting material therefor. The polysilane compound has an excellent moldability as a high polymeric material and a higher hole drift mobility as a hole transporting material.

Abstract: The present invention relates to a siloxane-oxyalkylene copolymer surfactant having the formula MD.sub.x D'.sub.y M wherein M represents (CH.sub.3).sub.3 SiO.sub.1/2, or R(CH.sub.3).sub.2 SiO.sub.1/2, D represents (CH.sub.3).sub.2 SiO.sub.2/2, D' represents (CH.sub.3)RSiO.sub.2/2, and the value of x+y is from 48 and 220, and the ratio x/y is from 5 to 15 inclusive. In the above formulae for M and D', R is a polyether-containing substituent selected from the group consisting of(1) --C.sub.n H.sub.2n O(C.sub.2 H.sub.4 O).sub.a (C.sub.3 H.sub.6 O).sub.b R' moieties having weight average molecular weights in the range 2300-3400 and wherein n is 3-4, the ratio a/b is from 0.5 to 1.3 inclusive, R' represents hydrogen, an alkyl group of 1-4 carbon atoms or --C(O)CH.sub.3 and(2) --C.sub.n' H.sub.2n' O(C.sub.2 H.sub.4 O).sub.a' (C.sub.3 H.sub.6 O).sub.

Abstract: Low viscosity MQ silicone resins as a composition of matter, methods of preparation of same and cosmetic and personal care products comprising said MQ resins.

Abstract: A 2H-5,6-optically active dihydropyran derivative represented by the general formula (I) or (I'): ##STR1## wherein Rf represents a fluoroalkyl group having 1 or 2 carbon atoms; a liquid crystal composition and a liquid crystal device comprising the derivative; and a racemic mixture comprising at least one type of the derivative. The derivative is a novel compound which exhibits the liquid crystal property by itself or can be used as an excellent dopant providing a high speed response to a composition comprising it even when the compound does not exhibit the liquid crystal property by itself. The derivative also exhibits a large spontaneous polarization.

Abstract: A process for purifying a polyether, which comprises adding to a polyether (A) containing a first salt, water (B) and a compound (C) which is capable of reacting with an ion constituting the first salt to form a second salt which is essentially insoluble in the polyether (A), then removing water, followed by removing the second salt from the polyether (A).

Abstract: The present invention discloses non-hydrolyzable, block, (AB).sub.n A type, copolymers comprising alternating units of polysiloxane and amino-polyalkyleneoxide and provides a method for the preparation of these copolymers. Also provided is the use of these copolymers as softeners, in particular durable, hydrophilic textile softeners, which improve tactile properties of the textiles substrates treated with the commercial soil release finishes, without substantially detracting from their properties.The copolymers of the present invention have alternating units of polysiloxane ?X(C.sub.a H.sub.2a O).sub.b R.sup.2 ?(SiO(R.sup.1).sub.2 !.sub.c Si(R.sup.1).sub.2 R.sup.2 (C.sub.a H.sub.2a O).sub.b X!and polyalkyleneoxides ?YO(C.sub.a H.sub.2a O).sub.d Y!wherein R.sup.1 is a C.sub.1 to C.sub.4 alkyl, preferably methyl, R.sup.

Abstract: The use of enol ether capped polyether-polysiloxane copolymers as surfactants in polyurethane foam applications is taught herein. These enol ether capped surfactants exhibit a high capping efficiency and yield good performance. Moreover, they are stable in water/amine premixes.

Abstract: Proposed is a novel polysiloxane-polyether block copolymer having excellent heat resistance, which is characterized by the molecular structure consisting of repetition of diorganopolysiloxane units and polyoxyalkylene units having a bisphenol linkage of the formula --O--Pn--CMe.sub.2 --Pn--O-- in the unit, Pn being a 1,4-phenylene group and Me is a methyl group. This polysiloxane-polyether block copolymer can be prepared by conducting a hydrosilation reaction between a diorganopolysiloxane terminated at each molecular chain end with a silicon-bonded hydrogen atom and a polyoxyalkylene compound having the bisphenol linkage in the molecule and terminated at each molecular chain end with an alkenyl group or, preferably, allyl group in the presence of a platinum catalyst.

Abstract: The invention relates to novel compounds of the organosiloxane and organosilane type, bearing at least one function derived from salicylic acid. These novel products have, in particular, desquamating and/or anti-aging properties and may be used in topical application.

Abstract: A fluorine-containing aromatic compound represented by the formula (1) is effectively usable to obtain a magnetic fluid or the like having a wide heat-resistant temperature range and high water resistance ##STR1## wherein X is H, F, Cl, C.sub.1.about.20 alkyl or C.sub.1.about.20 alkoxyl, p is an integer of 1 to 4, Y is --COCH.sub.3, --COOC.sub.2 H.sub.5, --CH(OH)CH.sub.3, --C(CH.sub.3).sub.2 OH, --CH.dbd.CH.sub.2, --C(CH.sub.3).dbd.CH.sub.2, --CAB(CH.sub.2).sub.m Si(CH.sub.3).sub.n Z.sub.3-n, A and B are each H or CH.sub.3, Z is Cl, OCH.sub.3 or OC.sub.2 H.sub.5, and m and n are each 0 or 1, and Rf is C.sub.1.about.20 fluoroalkyl or C.sub.1.about.100 fluoropolyether group.

Abstract: Aqueous and radiation-curable printing varnishes and printing inks, are disclosed which contain special polyoxyalkylene polysiloxane copolymers. These printing varnishes and printing inks have improved scratch resistance, a higher gliding ability and an extremely low tendency to foam, so that the production of printing inks proceeds without problems and, at the same time, an optically attractive typography can be obtained.

Abstract: The invention relates to organopolysiloxane copolymers having at least one Si-bonded vinyloxy-functional group and their preparation. The compositions of the present compound crosslink particularly rapidly under light.

Abstract: There is now provided a polyol composition containing a polyol having polyester linkages and a number average molecular weight of 400 or more, and at least about 8 php of a silicone-containing surfactant polymer. Either mixed into the polyol composition at the time of foaming, mixed into an isocyanate, or both, is an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon. The polyol composition is used to make a polyisocyanate based closed cell rigid foam by reacting an organic isocyanate and the polyol composition in the presence of an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon blowing agent.

Abstract: An alignment film for liquid crystals comprising a quasi-monomolecular layer of compounds of the formula IIC.sub.y --S.sub.p --A.sub.n (II)in whichC .sub.y is a mediocyclic or macrocyclic carbon ring having 8 or more ring members, it also being possible for this ring to contain fused benzene rings and --O--, --N--, --S--, --Si-- and --B-- as heteroatoms;S.sub.p is an alkyl group having from 1 to 20 carbon atoms, in which one or more non-adjacent --CH.sub.2 --groups may be replaced by --O--, --S--, --CO--, --O--CO--, --NH--CO--, --O--COO--, --NH--CO--NH--, --NH--CO--O--, --SO.sub.2 --, --Si(CH.sub.3).sub.2 --, --CH.dbd.CH-- or --C.tbd.C--;A.sub.n is SiX.sup.1 X.sup.2 X.sup.3, where X.sup.1 is a single bond, and X.sup.2 and X.sup.3, independently of one another, are a single bond or an alkyl or alkoxy group,where the compound of the formula (II) is bonded to an oxidic layer via the single bond(s) of the group A.sub.n.

Abstract: The liquid crystalline organosiloxanes contain per molecule at least one doristeryl group bonded at the 3.beta. position and can be used as right-handed filter materials and optical media.

Abstract: There is now provided a closed cell rigid polyurethane foam made from a polyol composition containing a polyol having polyester linkages and a number average molecular weight of 400 or more, and at least about 8 php of a silicone-containing surfactant polymer. Either mixed into the polyol composition at the time of foaming, mixed into an isocyanate, or both, is an aliphatic or cycloaliphatic C.sub.4 -C.sub.7 hydrocarbon.

Abstract: Low viscosity MQ silicone resins as a composition of matter, methods of preparation of same and cosmetic and personal care products comprising said MQ resins.

Abstract: The invention relates to self-curing systems based on polymerizable and hydrolytically condensable or condensed silicon compounds. The systems according to the invention comprise one or more components which contain starter and/or activator systems, at least one component of the system containing a silicon compound of the formula I or Ia, or a precondensed form thereof,{X.sub.a R.sub.b Si?R'(A).sub.c !.sub.(4-a-b) }.sub.x B (I){X.sub.a R.sub.b Si?(R'A).sub.c !.sub.(4-a-b) }.sub.x B (Ia)The invention furthermore relates to activators in the form of silane-bonded tertiary amines of the general formula IX or X.

Abstract: New alkyl substituted siloxanes and alkyl substituted polyether fluids are prepared by reacting an unsaturated alkyl, a aralkyl or ether with alkylhydrido siloxanes such as (i) comonomers RSi(OSiMe.sub.2 H).sub.3, (ii) oligomers (HMe.sub.2 SiO).sub.2 --Si(R)--O--Si(R)--(OSiMe.sub.2 H).sub.2, and (iii) higher molecular weight siloxane species RSi?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.3 and ?HMe.sub.2 SiO(Me.sub.2 SiO).sub.x !.sub.2 Si(R)O(R)Si?(OSiMe.sub.2).sub.x OSiMe.sub.2 H!.sub.2. R is a C.sub.2 to C.sub.18 straight-chain or branched-chain alkyl substituent.

Abstract: Compositions and methods are provided for cleaning and wetting of contact lenses, especially rigid, gas-permeable contact lenses. The compositions comprise low molecular weight polyalkylene oxide modified siloxanes, which are particularly effective in removing lipids from the surface of contact lenses.

Abstract: This invention may be described as follows. (1) A defoaming agent for the production of highly elastic soft and semi-rigid polyurethane foam, having as a main component thereof an organio silicone compound represented by the following formula (I) ##STR1## wherein each R.sup.1 is a monovalent hydrocarbon group of one to eighteen (18) carbon atoms, R.sup.2 is a monovalent hydrocarbon group of one to eighteen (18) carbon atoms or an organic substituent, and x and y are each not less than 1, providing x+y equals a number between 3 to 8. A method for the production of a highly elastic soft and semirigid polyurethane foam with said defoaming agent per formula (1) and a highly elastic soft polyurethane foam and a semirigid polyurethane foam produced by this method are also taught.

Abstract: The invention is directed to water soluble silane compositions that are essentially alcohol free comprising compounds of the structure:(RO).sub.3-x (HO).sub.x Si(CH.sub.2).sub.3 (OCH.sub.2 CH.sub.2).sub.b OH(Ia ){(RO).sub.2-y (HO).sub.y Si(CH.sub.2).sub.3 (OCH.sub.2 CH.sub.2).sub.b O}.sub.z (IIa)wherein x ranges from 1 to 3, b ranges from 1 to 30, y is 0 or 1, and z ranges from 1 to 3, and R is an aryl or alkyl having from 1 to 10 carbon atoms. The invention further comprises methods for forming such compounds and for their use in preparing water soluble silane compositions by reaction with relative insoluble silane compounds terminated in functional groups selected from the group comprising epoxies, vinyls, mercaptos and acrylates.