Abstract: The present invention provides a liquid crystal-aligning agent including, as the resin component, a polyimide precursor containing a chemical structure represented by the following formula (1): The present invention further provides a liquid crystal-aligning agent including, the above polyimide precursor and a polyimide precursor represented by the following general formula (2): (wherein Y is a tetravalent aliphatic group, Z is a bivalent aromatic group, and R is H or an alkyl group).

Abstract: Polysiloxane composition is provided having the formula: wherein: R1, which can be the same or different, is selected from R2, an amine containing group of the formula —(CH2)n—Fn1—Bn2F—NH2 or a functional group of the general formula: wherein at least one R1 is a pyrrolidone-containing ester or amide functional group as shown; R5 is hydrogen, alkyl or polyoxyalkylene; D is oxygen or nitrogen, x is 1 or 2, F is linear or branched alkylene; B is —NR9, oxygen or sulfur, wherein R9 is hydrogen or lower alkyl (C1-6); R2 can be the same or different and is selected from alkyl, aryl, alkenyl or alkeynyl; R3 and R4, which may be the same or different are selected from alkyl, aryl, capped or uncapped polyoxyalkylene, alkaryl, aralkylene or alkenyl; a is an integer from 0 to 50,000; and b is an integer from 0 to 100.

Abstract: A terminated silane polymer is produced by reacting an organic derivative of silicon with the terminal groups of polymers that are obtained by a Michael polyaddition reaction of organic compounds that contain at least two active hydrogens to organic components that contain at least two ethylene bonds that are activated by the presence, in the alpha position with regard to each ethylene bond, of an electronegative group.

Abstract: Disclosed is a polyimidesiloxane adhesive made by reacting in a solution of an organic solvent a dianhydride selected from the group consisting of biphenyl dianhydride and oxydiphthalic anhydride with an approximately stoichiometric amount of a diamine. The diamine is a mixture of about 5 to about 30 mole % of a siloxane-containing diamine and about 70 to about 95 mole % of a non-siloxane containing diamine. The non-siloxane containing diamine is a mixture of about 10 to about 90 mole % each of at least two of the diamines 2,2-bis(4[4-aminophenoxy]phenyl) propane, &agr;,&agr;′-bis(4-aminophenyl)-1,4-diisopropylbenzene, 3,3′-diaminophenylsulfone, and 1,3-bis(3-aminophenoxy)benzene. The adhesive can be made into one, two, and three-layer tapes (or dispensed in other ways) which have a high Tg and a relatively low bonding temperature.

Abstract: An enameling lacquer comprises a base first polymer and a copolymer which is compatible with said first polymer and which contains polymeric chains selected from polysiloxanes, fluorated chains and alkane chains. The lacquer is of particular application to an enameled wire comprising at least one layer of an enamel obtained by reticulation of the lacquer.

Abstract: A method of making radiation-curable, fiber optic materials having extended shelf-life and reduced water content which when suitably cured provide reliable and consistent adhesion characteristics to optical glass fibers.

Abstract: The invention relates to organopolysiloxanes comprising (meth)acrylate groups, to a process for their preparation and to their use as radiation-curing coating materials.

Abstract: Emulsions and dispersions of polymers formed from acrylated hydrophilic polysiloxanes and their copolymers with acrylate/methacrylate comonomers are taught herein wherein the polymer is formed in a solvent via radically catalyzed polymerization. Such a polymer has utility in personal care applications, as well as textile finishes and coating formulations.

Abstract: The invention pertains to a coating composition comprising a polyacetoacetate, a crosslinker for said polyacetoacetate and an organosilane. The organosilane preferably comprises at least one amino group, amino containing-group, expoxy group, epoxy-containing group, mercapto group, mercapto-containing group, vinyl group, vinyl-containing group, isocyanate group, isocyanate-containing group, ureido group, ureido-containing group, imidazole group or imidazole-containing group. The coating composition is particularly useful as a primer for an aluminum substrate.

Abstract: Water-soluble, i.e. easily dispersible, amino-functional polyorganosiloxanes obtained by radical polymerization of vinyl compounds containing amino or ammonium groups onto polyorganosiloxanes which contain at least one mercapto group. They are suitable as textile finishing aids, surfactants and emulsifiers.

Abstract: The invention relates to polysiloxanes containing carbonate groups and modified with linear polyesters and to their use as additives for coatings, especially radiation-curing coating materials.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: Chemicaly stable, perflourinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions containing the perfluorinated POS are disclosed.

Abstract: Siloxane organic hybrid polymers and a method of making them by condensation polymerization reaction of organoalkoxysilane in the presence of organic film-forming polymers are disclosed. Alkali metal carboxylic acid catalyst is also disclosed, as well as the incorporation of cerium oxide for attenuation of ultraviolet radiation.

Abstract: Novel organopolysiloxane compositions comprising (A) organopolysiloxanes which contain at least one SiC-bonded organic radical containing basic nitrogen, where the basic nitrogen is optionally present in part as a salt of a water-soluble organic acid, water-soluble inorganic acid, or water-insoluble organic acid, (B) anionic, cationic, nonionic or amphoteric surfactants, which are in soluble or soluble in (A) (C) substituted or unsubstituted diacrylates and/or oligoacrylates, and optionally, (C′) substituted or unsubstituted acrylates, and (D) water are described.

Abstract: A silylated resin suitable for use as an adhesive binder for composites and in sealant and adhesive dental applications is represented by the general formula (I): in which: R1 is an aliphatic, cycloaliphatic, aryl, hydrocarbon, or fluorocarbon group; R2 is the same as R1 or a different aliphatic, cycloaliphatic, aryl, hydrocarbon, or fluorocarbon group; M2 is the same as M1 or a different functional or nonfunctional group selected from the group consisting of: n is 1-3; x is 1-20; and y is 1-20; which comprises the reaction product of the exchange reaction of a hydroxylated, aminated, or carboxylated acrylic resin represented by the general formula (II): in which: R4 is an aliphatic, cycloaliphatic, aryl, hydrocarbon, or fluorocarbon group with one or more protic functional groups selected from the group consisting of: OH, N—H, and CO2H R5 is H or CH3; and R6 is H or CH3; with a trialkoxyorganosilane or triacyloxyorganosi

Abstract: A curable composition having an epoxy component and an organosilane component. The epoxy component includes at least one epoxy compound having two or more epoxide functional groups. The organosilane component includes at least one organosilane compound having two or more silyl ether groups. An exemplary organosilane compound is a siloxane-modified polyol.

Abstract: A radiation curable coating composition for forming a primary polymeric coating on having good adhesion to a glass optical fiber is disclosed. The coating composition is formed by a mixture of a base radiation curable liquid composition capable of forming a polymeric coating; and a hydrolyzed coupling agent mixture comprising N-beta (aminoethyl)-gamma-aminopropylmethyldimethoxysilane, N-beta (aminoethyl)-gamma-aminopropyltrimethoxysilane, isocyanatopropyltriethoxysilane, and gamma-(trimethoxylsilyl)propylacrylate.

Abstract: The invention relates to a gas barrier composition as well as to composite structures having at least one surface of a molded resin coated with the composition, said composition comprising:(A) an alkoxysilyl functional polyamine compound, or a hydrolyzate thereof, said polyamine compound having three or more amine groups, at least one nitrogen atom of said amine groups being bonded to a hydrogen atom and at least one nitrogen of said amine groups being bonded to an alkoxysilyl group expressed by the formula--W--SiR.sup.2.sub.3-f (OR.sup.1).sub.fwherein R.sup.1 is an alkyl group having 1 to 6 carbon atoms, R.sup.

Abstract: The invention provides a fluorine-containing curable composition comprising (A) a linear perfluoro compound having at least two alkenyl groups in its molecule and a divalent perfluoroalkylene or perfluoropolyether structure in its backbone, (B) a fluorinated organohydrogenpolysiloxane having at least four hydrosilyl groups in its molecule and a divalent perfluoro structure in its backbone, and (C) a platinum catalyst.

Abstract: A crosslinkable silicon polymer composition is provided comprising (A) a silicon polymer containing Si--Si bonds and Si--H groups and having a Mn of 500-500,000, (B) a polyfunctional aromatic carboxylic acid allyl ester, and (C) an organic peroxide or azo compound. The composition cures into a crosslinked polysilane film which is solvent insoluble, tough, and abrasion resistant.

Abstract: A polycarbonate containing repeating units (1) represented by the general formula (1), a polycarbonate molding produced by molding the polycarbonate, and an electrophotographic photoreceptor having a photosensitive layer which has a surface layer containing the polycarbonate: ##STR1## wherein R is an aliphatic unsaturation-free monovalent hydrocarbon group, R.sup.1 is a halogen atom, an alkyl group, an alkoxy group or an aryl group, X is an alkylene group or an alkyleneoxyalkylene group, X' is an alkylene group of 2 or more carbon atoms, an alkyleneoxyalkylene group or oxygen atom, a is an integer of 0 to 4, na is 0 or 1, nb is 1 or 2, nc is 1 or 2, provided na+nb+nc=3, n1, n2, n3 and n4 are 0 or an integer of 1 or more, provided n1+n2+n3+n4 is an integer of 0 to 450.

Abstract: An adhesive tape for electronic parts which comprises a metal substrate and an adhesive layer A and an adhesive layer B laminated in order on at least one side of said metal substrate, wherein said adhesive A comprises a polyimide consisting of 100 -20% by mol of the repeating unit represented by the following formula (1a) and 0-80% by mol of the repeating unit represented by the following formula (1b), said adhesive B comprises a polyimide consisting of 100-40% by mol of the repeating unit represented by the following formula (1a) and 0-60% by mol of the repeating unit represented by the following formula (2), and the adhesive layer A and the adhesive layer B have each a different glass transition temperature: ##STR1## wherein Ar represents a divalent group selected from the specified structures containing aromatic rings, R is an alkylene group having 1 to 10 carbon atoms or --CH.sub.2 OC.sub.6 H.sub.4 --, the methylene group of which attaches to Si, and n means an integer of 1 to 20.

Abstract: An emulsion polymer is disclosed by the present invention. In particular, the emulsion polymer comprises a protective colloid and a functionalized silane component which is of the formula: ##STR1## wherein R" is C.sub.1 -C.sub.5 alkyl, R' is C.sub.1 -C.sub.5 alkyl, R is SH, CH.sub.2 .dbd.CH--, CH.sub.2 .dbd.C(CH.sub.3)--C(O)O--, CH.sub.2 .dbd.CH--C(O)O--, and ##STR2## n is 1-10, and m is 2 or 3.

Abstract: The invention includes hydrolyzable and polymerizable silanes, methods of making them and using them to obtain silicic acid(hetero)polycondensates and silicic acid(hetero)polymerizates. The hydrolyzable and polymerizable silanes have the formula I, ##STR1## wherein A=O, S, NH or C(O)O; wherein B=a straight chain or branched organic residue with at least one C.dbd.C double bond and from 4 to 50 carbon atoms;R is an alkyl group, alkenyl group, aryl group, alkylaryl group or an arylalkyl group;R' is a substituted or unsubstituted alkylene group, arylene group, arylenealkylene group or alkylenearylene group each having zero to ten carbon atoms, with the proviso that the substituted groups each have at least one oxygen atom, sulfur atom and/or amine group substituent;R.sup.

Abstract: A method of making .beta.-diketo functional silanes and siloxanes in which the acetoacetic ester moiety, i.e., .beta.-diketo CH.sub.3 COCH.sub.2 CO--, is attached to the oxygen or nitrogen atoms of C--OH or C--NH.sub.2 containing functional silanes or siloxanes, by reacting the organosilicon nucleophile with diketene, as illustrated below for the C--OH containing functional silane. ##STR1## The products can be formed into curable compositions, or used as additives in durable textile treatments, polyurethane foams, and hair care applications.

Abstract: Block copolymers of the general average formula ##STR1## where, A=radical R.sup.1, radical D, or radical E,D=radical of the formula--R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n (CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2-i R.sup.6.sub.i --O--).sub.m R.sup.3,and E isa) a radical of the general formula --R.sup.2.sub.f --O--(C.sub.2 H.sub.4-g R.sup.5.sub.g O--).sub.n R.sup.3 and/orb) an epoxy-functionalized alkyl substituent which may contain heteroatoms and/orc) a monohydroxylalkyl, dihydroxylalkyl, or trihydroxyalkyl substituent which may also be aromatic or branched and partially or fully etherfied or esterfied and/ord) a halogen- or pseudohalogen-substituted alkyl, aryl, or aralkyl radical which may also be branched,provided that there are two or more different polyether copolymer units in the block copolymer, the remaining variables being defined herein, are disclosed, as well as their use as surface-active substances, in particular as additives in the production of polyurethane foams.

Abstract: The composition formed by mixing an organosilane with an ether. Water-stabilized organosilane compounds. A water stable composition made from the ether and organosilane composition and water. A method of treating a substrate by mixing or contacting the substrate with the product, compound, or composition of this invention for a period of time sufficient for treatment of the substrate. A treated substrate having adhered thereto the product, compound, or composition of this invention. A method of dyeing and treating a substrate. A method of antimicrobially treating a food article. A method of antimicrobially coating a fluid container. A method of antimicrobially coating a latex medical article.

Abstract: A hydroxyphenyl-containing silalkarylene compound having the formula: ##STR1## wherein R is a monovalent hydrocarbon group containing no aliphatic unsaturated bonds, R.sup.1 is alkylene having 1 to 10 carbon atoms, Ph is substituted or unsubstituted phenylene, A is substituted or unsubstituted hydroxyphenyl, B is alkylene having at least 2 carbon atoms or alkylenoxyalkylene, x is from 1 to 100, y is from 0 to 60, and a is 0 or 1. A silalkarylene-modified organic resin obtained by copolymerizing a hydroxyphenyl-containing silalkarylene compound with an organic resin monomer and a coating agent comprising a silalkarylene-modified organic resin.

Abstract: The present invention relates to a siloxane random copolymer having a repeating unit represented by the following general formula (I) (II) and (III) at random and a resin composition containing the same. ##STR1## Further, the invention relates to a process of producing a siloxane copolymer comprising the step of reacting at least one polycarbonate and/or dicarbonate of diol and, if needed, at least one diester of dicarboxylic acid with at least one specified silicon compound in the presence of an esterifying or ester exchange catalyst.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: A thermosetting composition comprises (A) a compound having in the molecule two or more carboxyl groups blocked by a vinyl ether compound, a vinyl thioether compound or a hetero compound having a vinyl type double bond and oxygen or sulfur as the hetero atom, (B) a compound having in the molecule two or more reactive functional groups which can form chemical bonds with the blocked carboxyl groups, and (C) a dispersing component of at least one inorganic oxide sol selected from the group consisting of aluminium oxide sol, silica sol, zirconium oxide sol and antimony oxide sol, and optionally (D) a thermal latent acid catalyst which is activated during curing the composition by heating. A method of coating and a coated article comprise applying the composition. The obtained paint film has excellent weathering resistance, stain resistance, stain-removing property, chemical resistance, moisture resistance and excellent appearance.

Abstract: Curable compositions containing novel polysiloxanes having various reactive functional groups are disclosed. The curable compositions are useful as both ambient-cured and thermally-cured coating compositions which provide such properties as excellent appearance, mar resistance, acid etch resistance, adhesion, pot life, improved tack time, mar resistance and corrosion resistance.

Abstract: The present invention provides a novel soluble polyimide resin which is superior in solubility in solvents and transparency, which is useful particularly in electronics and optronics fields, and which has good processability; a process for production of the resin; and a solution composition of the resin. A soluble polyimide resin containing, as part or the whole of the diamine units, a 2,5(or 6)-bis(aminomethyl)bicyclo[2.2.1]heptane and having a light transmittance of 60% or more in a range of wavelength larger than 400 nm in an ultraviolet-visible light spectrum measured for a film of 10-.mu.m thickness; a process for production of the resin; and a solution composition of the resin.

Abstract: A coating composition comprising a mixture of a methyl-rich silicone resin (S-1) and an acrylic resin (A-1) obtained by polymerizing at least one radical polymerizable vinyl monomer (M-1), or a reaction product obtained by reacting the silicone resin (S-1) with the radical polymerizable vinyl monomer (M-1) is suitable for coating carrier particles to form an electrophotographic carrier.

Abstract: A polysiloxane composition including an amphoteric class of organosilicone composition is provided having the formula: ##STR1## wherein: R is selected from R.sub.2 or --OR.sub.9, wherein R.sub.9 is hydrogen or alkyl;R.sub.1, which can be the same or different, is selected from R.sub.2, a diamine containing group of the formula --F.sub.1 --NR.sub.9 --F--NH.sub.2, and at least one pyrrolidone-containing functional carboxyl group of the general formula: ##STR2## wherein R.sub.5 is hydrogen, lower alkyl (C.sub.1-6) or alkali metal; F.sub.1 is linear or branched alkylene; F is linear or branched alkylene; B is --NR.sub.7, wherein R.sub.7 is hydrogen or a dicarboxylic group;R.sub.2 is selected from alkyl, aryl or olefinic;R.sub.3 and R.sub.

Abstract: Polyimide is produced by reacting two kinds of diamine compounds consisting of diaminopolysiloxane and a hydroxyl group-containing diamine or three kinds of diamine compounds consisting of diaminopolysiloxane, a hydroxyl group-containing diamine and an aromatic or alicyclic diamine with a 4,4'-(hexafluoroisopropylidene)diphthalic acid dianhydride, thereby once forming a polyamic acid, and subjecting the polyamic acid to polyimidization reaction. The resulting polyimide itself is soluble in low boiling organic solvents for general purpose use, typically methyl ethyl ketone. A photosensitive composition comprising the polyimide, a photo crosslinking agent and a photo acid-generating agent forms a negative type polyimide pattern upon development with an aqueous alkali solution.

Abstract: A photosensitive polyimidosiloxane composition comprising a polyimidosiloxane comprising 15-80 mole percent of the units, ##STR1## wherein X represents CO, O or a direct bond and R.sub.3 represents an aromatic residue containing a photosensitive group with an unsaturated hydrocarbon group, and 85-20 mole percent of the units, ##STR2## wherein X is as defined above, each R.sub.4 independently represents a divalent hydrocarbon residue, each R.sub.5 independently represents an alkyl group of 1-3 carbon atoms and 1 represents an integer of 3-30, a finely divided inorganic filler, and an organic solvent. The composition provides films having excellent light transmittance.

Abstract: A surface modifier composition that exercises an excellent antistatic performance, offers an excellent storage stability, and provides an excellent surface feel, surface protection, and surface lubricity; that does not suffer from deterioration over long periods of time; that exhibits an excellent blending stability with respect to cosmetics, lubricants, lustrants, antifoams, fiber-treatment agents, and paints; and that has an excellent capacity to improve a variety of surface properties. The surface modifier composition comprises an (A) amidepolyether-modified organopolysiloxane and an (B) alcoholic functional group-containing compound.

Abstract: A coating comprising the silated reaction product of R.sup.1 (OH).sub.m and OCN(CH.sub.2).sub.t SiR.sup.4 (OR.sup.5).sub.2 and/or R.sup.2 --(SiYX.sub.2).sub.n ; a graft copolymer having an acrylic polymer based backbone and stabilizing arms comprising ethylenically unsaturated monomer, the backbone being insoluble and the arms being soluble in the composition; a melamine crosslinker; and an acrylic polyol; m, n, t, R.sup.1, R.sup.2 R.sup.4, R.sup.5, X and Y being defined in the text.

Abstract: Polyimide is produced by reacting two kinds of diamine compounds consisting of diaminopolysiloxane and a hydroxyl group-containing diamine or three kinds of diamine compounds consisting of diaminopolysiloxane, a hydroxyl group-containing diamine and an aromatic or alicyclic diamine with a dicarboxylic acid anhydride having a 2,5-dioxotetrahydrofuryl group as one acid anhydride group, thereby once forming a polyamic acid, and subjecting the polyamic acid to polyimidization reaction. The resulting polyimide itself is soluble in low boiling organic solvents for general purpose use, typically methyl ethyl ketone. A photosensitive composition comprising the polyimide, a photo crosslinking agent and a photo acid-generating agent forms a negative type polyimide pattern upon development with an aqueous alkali solution.

Abstract: A fragrance releasing siloxane comprising a substituent having the formula (R.sup.1 O).sub.a (R.sup.2 O).sub.b (R.sup.3 O).sub.c (R.sup.4).sub.d (R.sup.5).sub.e SiR.sup.U with R.sup.U a two to forty atom divalent hydrocarbon radical where R.sup.1, R.sup.2 and R.sup.3 are derived from the group of fragrant esters, ketones, or aldehydes, each independently having the structure: R.sup.7 --CH.dbd.C(O--)--R.sup.8, with R.sup.4 and R.sup.5 selected from the group consisting of monovalent hydrocarbon radical having from one to forty carbon atoms and monovalent alkoxy radicals having from one to forty carbon atoms, where the subscript a has a value ranging from 1 to 3 and the subscripts b, c, d, and e have values ranging from 0 to 2 subject to the limitation that a+b+c+d+e=3; R.sup.7 is selected from the group consisting of hydrogen and monovalent hydrocarbon radicals having from one to one hundred carbon atoms and R.sup.

Abstract: A fragrance releasing siloxane comprising a substituent having the formula (R.sup.1).sub.a (R.sup.2).sub.b (R.sup.3).sub.c (R.sup.4).sub.d (R.sup.5).sub.e SiR.sup.U with R.sup.U a two to forty atom divalent hydrocarbon radical where R.sup.1, R.sup.2 and R.sup.3 are derived from the group of fragrant esters, ketones, or aldehydes, each independently having the structure:R.sup.7 --CH.dbd.C(O--)--R.sup.8, with R.sup.4 and R.sup.5 selected from the group consisting of monovalent hydrocarbon radical having from one to forty carbon atoms and monovalent alkoxy radicals having from one to forty carbon atoms, where the subscript a has a value ranging from 1 to 3 and the subscripts b, c, d, and e have values ranging from 0 to 2 subject to the limitation that a+b+c+d+e=3; R.sup.7 is selected from the group consisting of hydrogen and monovalent hydrocarbon radicals having from one to one hundred carbon atoms and R.sup.

Abstract: A fiber treated with a treating agent which is the reaction product of a polysiloxane having at least one aminofunctional group substituted on a silicon atom and having at least one hydrogen--nitrogen bond with a monoacrylate polyether. The present treated fiber has good hand, little yellowing, and improved hydrophilicity when compared to fibers treated with convention aminofunctional polyorganosiloxanes.

Abstract: Block copolymers suitable as molding resins are provided having polycarbonate blocks and polysiloxane blocks of the structure ##STR1## where R.sup.1, R.sup.2, Y and m are as defined herein, and where the weight percentage of blocks of polycarbonate blocks is from 92 to 96% and the weight percentage of siloxane from blocks of polysiloxane blocks is from 4 to 8%.

Abstract: Disclosed are improved curable powder coating compositions comprised of a particulate, film-forming mixture of a polymer having reactive functional groups, and a curing agent therefor having functional groups reactive with the functional groups of the polymer and present in an amount sufficient to cure the coating composition, wherein the inclusion of a particular polyester which has carboxylic acid functional groups improves adhesion to metal, particularly aluminum, and filiform corrosion resistance.

Abstract: Disclosed is a method of making an imide-containing polymer by bulk or melt polymerizing monomers. A mixture is formed of (1) a cyclic compound that contains an anhydride group and a second group which is an anhydride, a carboxylic acid, or an ester and (2) a diamine in an amount stoichiometric .+-.5 mole % of stoichiometric with the amount of cyclic compound. An end capper may also be included in the mixture to control the molecular weight but no solvent is used. A polyimidesiloxane can be made by using a siloxane-containing diamine. The mixture is heated to a temperature above the T.sub.g or T.sub.m of the polymer but below its degradation temperature.

Abstract: A process for the production of polysiloxane/polycarbonate block cocondensation products is disclosed. The process comprises reacting in the melt at temperatures of 250 to 320.degree. C. and pressures of 0.01 to 100 mbar (a) a hydroxyaryloxy-terminated dimethylsiloxane with (b) an oligocarbonate. The oligocarbonate is characterized in that its weight average molecular weight is 3000 to 24000 and the molar ratio of its OH end groups to aryl end groups is 10:90 to 70:30. The weight ratio of said (a) to said (b) in the inventive process is between 1:99 and 40:60. Also disclosed are the products prepared by the process.

Abstract: Functional polysiloxanes and curable coating compositions containing such polysiloxanes are disclosed. The curable compositions are useful in coatings where they provide excellent appearance, pot-life, humidity resistance and improved adhesion to galvanized steel substrates. A method for preparing the functional polysiloxanes is also disclosed.

Abstract: A material of general formula I: ##STR1## where E=0 indicates a non-cyclic system, and E=1 indicates a cyclic system;G is R.sub.3 SiR.sub.1 R.sub.2 (O).sub.kR.sub.1, R.sub.2, R.sub.3 are independently selected from C.sub.1-16 alkyl which may be partly or fully halogenated, H and formula IA: ##STR2## wherein Y is a propylene group which may be partially halogenated with fluorine or chlorine and Y.sub.1 is independently selected from COO, OCO, O, S, CHOH, CHF, CO or CH.sub.2 ;Q and Q.sub.1 are independently selected from (CH.sub.2).sub.n wherein one or more non-adjacent methylenes may be replaced by O andn=0-20;Z and Z.sub.1 are independently selected from O, S, single covalent bond, COO or OCO; ##STR3## represents a mesogenic group and is given by the general structure II ##STR4## A, B, D are selected from the following rings: ##STR5## the above rings may be substituted with one or more of the following substituents in at least one of the available substitution positions: F, Cl, Br, CH.sub.