Abstract: Novel latex or emulsion compositions containing internally plasticizing and crosslinkable monomers derived from traditional semi-drying or non-drying oils are disclosed and claimed. The monomers are ethylenically unsaturated derivatives of long-chain olefinic compounds. Preferred embodiments include latex formed from acrylate or methacrylate esters of fatty alcohols. A process for the synthesis of the latex composition is also disclosed, which involves (a) polymerization of the ethylenically unsaturated derivatives of a long-chain olefinic compound in an aqueous phase with at least one other copolymerizable monomer; and (b) blending of so formed polymer with at least one drier and a surfactant to form the novel latex or emulsion compositions. These compositions form films at low minimum film forming temperatures (MFT) ranging from −5 to 10° C.

Abstract: This invention relates to novel rosin-fatty acid vinylic polymer compositions and the process for preparing them. In particular, the invention relates to novel rosin-fatty acid vinylic polymer compositions which exhibit properties that make them useful as surface sizing compositions for cellulosic materials.

Abstract: A water-reducible polyester resin for use in producing urethane coatings comprises the reaction product of: a) hexahydrophthalic anhydride, trimellitic anhydride or phthalic anhydride; b) 1,4-cyclohexane dimethanol or trimethylol propane or mixtures thereof; and c) a polyethylene glycol selected from the group consisting of polyethylene glycols, methoxy polyethylene glycols and trifunctional polyethylene glycols having a molecular weight no greater than approximately 1050; the reaction product having a functionality between approximately 2 and 2.6. Another water-reducible polyester resin comprises the same components and a specified nonionic surfactant. Urethane coatings containing such polyester resins and a diisocyanate are also disclosed.

Abstract: Elastomeric silicones, especially elastomeric silicone polyethers, are prepared by combining and reacting (A) an ≡Si—H containing polysiloxane, (B) a mono-alkenyl polyether, (C) an active ingredient such as a vitamin, antimicrobial agent, sunburn prevention agent, astringent, or sex hormone, (D) an &agr;,&ohgr;-unsaturated hydrocarbon, (E) a platinum catalyst, and (F) an oil. The reaction of components (A)-(F) is allowed to continue, forming a crosslinked three-dimensional gelled network of the elastomeric silicone polyether containing the active ingredient and the oil. The compositions are useful in personal and health care applications, personal hygiene, and household cleaning applications.

Abstract: A catalyst composition is disclosed. The composition comprises a titanium compound, a complexing agent, hypophosphorous acid or its metal salt, water and optionally a solvent. The complexing agent can be hydroxycarboxylic acid, alkanolamines, aminocarboxylic acids, or combinations of two or more thereof. The solvent can be water, ethanol, propanol, isopropanol, butanol, ethylene glycol, propylene glycol, isopropylene glycol, butylene glycol, 1-methyl propylene glycol, pentylene glycol, or combinations of two or more thereof. The titanium compound can be combined with a zirconium compound. Also disclosed is a process for using the composition for producing an ester or a polyester. The process comprises contacting a carbonyl compound, in the presence of the composition, with an alcohol under a condition suitable for esterification, transesterification, polymerization, or combinations of two or more thereof.

Abstract: The present invention provides a curable polymethylsilsesquioxane composition that uses polymethylsilsesquioxane obtained from inexpensive precursors and that provides a hard, scratch-resistant, highly corrosion-resistant, water-repellent, and transparent cured film. The curable polymethylsilsesquioxane composition of the invention includes a polymethylsilsesquioxane having the general formula(CH.sub.3 SiO.sub.3/2).sub.n (CH.sub.3 Si(OH)O.sub.2/2).sub.mand a predetermined number-average molecular weight, Mn, from 380 to 2,000, wherein m and n are positive numbers that provide the predetermined Mn, with the proviso that the value of m/(m+n) is less than or equal to 0.152/(Mn.times.10.sup.-3)+0.10 and greater than or equal to 0.034/(Mn.times.10.sup.-3) and 10 to 250 weight parts colloidal silica.

Abstract: The present invention relates to a high clarity water sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 30 weight percent to about 60 weight percent 1,3-butadiene, from about 30 weight percent to about 50 weight percent acrylonitrile, and from about 10 weight percent to about 20 weight percent methacrylic acid, and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80.

Abstract: Disclosed is a novel blocked polyisocyanate obtained by blocking the terminal isocyanate groups of a non-blocked polyisocyanate with a thermally dissociative blocking agent, wherein the non-blocked polyisocyanate is obtained by reacting at least one diisocyanate selected from the group consisting of an aliphatic diisocyanate and an alicyclic diisocyanate with a polyhydroxy compound having an average number of hydroxyl groups as many as 4.5 to 10, and removing substantially all unreacted diisocyanate monomers. A coating composition comprising the blocked polyisocyanate of the present invention as a curing agent and a polyol as a main agent not only has excellent curability even under low temperature conditions, but is also capable of forming a coating which has excellent impact resistance.

Abstract: The present invention relates to a high clarity water-sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water-sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 33 weight percent to about 77 weight percent 1,3-butadiene, from about 15 weight percent to about 45 weight percent acrylonitrile and from about 8 weight percent to about 22 weight percent methacrylic acid and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80 and a volume swell of greater than 40 percent.

Abstract: The invention provides a process that can be used for producing a bis-glycolate ester of 5-sulfo isophthalate metal salt. The process comprises contacting a 5-sulfo isophthalate a metal salt or a dialkyl ester of 5-sulfo isophthalate metal salt, in the presence of a catalyst, with a glycol. The catalyst comprises (1) a titanium compound, a solubility promoter, a phosphorus source, and optionally a solvent, (2) a titanium compound, a complexing agent, a phosphorus source, and optionally a solvent, a sulfonic acid, or combinations thereof, or (3) combinations of (1) and (2). The solubility promoter can be selected from the group consisting of ortho silicates, ortho zirconates and combinations thereof. The phosphorus source is selected from the group consisting of a phosphonic acid, a phosphinic acid, a phosphine, and combinations of two or more thereof. The complexing agent can be selected from the group consisting of hydroxycarboxylic acids, aminocarboxylic acids, and combinations thereof.

Abstract: A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.

Abstract: An aqueous microemulsion polymerization procedure is described in which very small colloidal melt-processible fluoropolymer particles are produced from at least one monomer and optionally TFE. The polymerization procedure involves initiating polymerization by adding a free-radical initiator to a microemulsion of at least one liquid organic compound and at least one free-radical polymerizable monomer to the microemulsion.

Abstract: A process for the production of a fabric/elastomer composite is provided. The inventive process involves the impregnation through a printing procedure of an inventive elastomer composition comprising (i) a water-borne polyurethane latex, (ii) an acid-generating chemical, (iii) a cloud point surfactant, (iv) a thickener, and (v) optionally, a cross-linking agent, within a textile fabric. Subsequently, the impregnated fabric is then heated, preferably with steam, in order to generate an acid, which, in turn, permits the surfactant to gel and uniformly coagulate the latex over the fabric surface. The fabric is preferably a circular knit comprised of polyester and/or lycra fibers. The composite may be utilized within any fabric application requiring a support function, particularly as joint braces, sports brassieres, support apparel, and the like. The inventive elastomer composition is also provided.

Abstract: Compositions of precipitated cationic polymers containing mixtures of certain salts as well as processes for making and using the same are disclosed.

Abstract: The instant invention provides a method for improving the miscibility of the lower molecular weight unsaturated siloxane-polyether copolymers with the .alpha., .omega.-divinylpolysiloxanes without loss of storage stability, or delay of cure at the vulcanization temperature, or loss of permanent hydrophilicity or other desirable features of the cured polysiloxane. The compositions of the present invention comprise one or more .alpha., .omega.-divinylpolysiloxanes, unsaturated polysiloxane-polyether copolymers having from 2 to 5 silicon atoms per molecule which are preferably trisiloxanes, and a compatibilizing additive. The permanently hydrophilic, rapidly wettable polysiloxane compositions yield static water contact angles <50.degree. dynamic advancing contact angles of less than about 100.

Abstract: The present invention provides a surface coating composition including: an organometallic comound (I) and/or a hydrolytic condensation product thereof: an organic compound (II) having a primary and/or secondary amino group in its molecule; and a compound (III) having a functional group reactable with the amino group in its molecule. The surface coating composition is capable of forming a coating layer which exhibits excellent gas barrier properties, transparency, and flexibility. A resin molding formed with the coating layer is preferably used as a wrapping material and a substrate for liquid crystal display device.

Abstract: The present invention provides a sheet made of a polyester resin composition, which composition shows no adhesion to calender rolls and can be made into a sheet by calendering. Specifically, the present invention provides a sheet made of a polyester resin composition, wherein the polyester resin composition comprises100 parts by weight of a copolyester resin obtained by replacing, in production of polyethylene terephthalate resin, 10 to 40 mole % of the ethylene glycol component with cyclohexanedimethanol, and0.1 to 2 parts by weight of a fatty acid ester lubricant.

Abstract: The present invention relates to a high clarity water sensitive carboxylated nitrile rubber composition which is particularly useful in making photopolymer formulations for printing plates utilized in flexographic printing applications. The present invention more specifically discloses a high clarity water sensitive carboxylated nitrile rubber composition which is comprised of (a) a carboxylated nitrile rubber which is comprised of repeat units which are derived from about 30 weight percent to about 60 weight percent 1,3-butadiene, from about 30 weight percent to about 50 weight percent acrylonitrile, and from about 10 weight percent to about 20 weight percent methacrylic acid, and (b) from about 1 to about 10 phr of at least one organic acid which contains at least three carboxyl groups. The carboxylated nitrile rubber of this invention will typically have a Mooney ML-4 viscosity of less than about 80.

Abstract: A process comprising (1) polymerizing an organic phase of monomer in the presence of a carboxylic acid, an oil soluble chain transfer agent, and a partially water soluble chain transfer agent; and which polymerizing is accomplished in the presence of (2) an aqueous phase containing a nonionic surfactant, and an anionic surfactant, and wherein there is added to the aqueous phase an aqueous initiator solution of an inorganic persulfate, and wherein the resulting latex contains particles of polymer with carboxylic acid; aggregating said latex particles with colorant; thereafter adding an effective amount of anionic surfactant and heating the mixture resulting about equal to, or about above the polymer Tg resulting from said monomer, or said monomers.

Abstract: Gels, cast films, coatings, extruded rods, extruded fibers, compression molded discs, and machined compression molded discs, are made from organopolysiloxane sheet or tube polymers such as an apophyllite-derived 3-cyanopropyldimethyl siloxy sheet polymer of the formula [((NCC.sub.3 H.sub.6)(CH.sub.3).sub.2 SiO).sub.x (HO).sub.1-x SiO.sub.1.5 ].sub.n. Polymers are prepared by contacting sheet or tube silicates with an organohalosilane containing at least one polar group such as cyanoalkyl, acyloxy, or haloalkyl, in the presence of a polar solvent or a mixture of a polar solvent and a non-polar solvent; and heating the mixture until a polymer is formed.

Abstract: This invention provides an aqueous coating composition, more particularly an aqueous floor finish composition, comprising water, at least one polymeric film forming agent, and a plasticizing agent, wherein the improvement comprises at least a portion of the plasticizing agent being at least one tertiary alkyl monocarboxylic acid having an average of from about 6 to 30 carbon atoms per molecule. Such compositions have one or more improved properties such as increased hardness as compared with the same compositions using only conventional plasticizers such as tributoxyethyl phosphate, improved wetting of the substrate by the composition during application, improved coating film leveling, improved multiple coat gloss development, and improved resistance to wear, black heel marking and scuffing.

Abstract: A process for the production of a fabric/elastomer composite is provided. The inventive process involves the impregnation of an inventive elastomer composition comprising (i) a water-borne polyurethane latex, (ii) an acid-generating chemical, and (iii) a cloud point surfactant, within a textile fabric. Subsequently, the impregnated fabric is then heated, preferably with steam, in order to generate an acid and gel the surfactant which then uniformly coagulates the latex over the fabric surface. The fabric is preferably comprised of polyester fibers. The composite may be utilized as upholstery in furniture or in automobiles, apparel, drapery, and the like. The inventive elastomer composition is also provided.

Abstract: Surfactant compositions including end-capped hydrocarbyl polyalkoxylate and/or fatty acid polyalkoxylate and organopolysiloxane having one or more polyoxyalkylene side chains are good immediate and long term spreaders particularly on fibrous hydrophobic synthetic polymeric substrates such as spun-bonded, non-woven materials made e.g. form polyolefins, especially polypropylene, or PET. Particularly useful alkoxylates are of one of the formulae (Ia to Id): R.sup.1 O.(AO.sup.1).sub.n.R.sup.2 (Ia); R.sup.3.CO.sub.2.(AO.sup.1).sub.n.R.sup.2 (Ib); R.sup.14 O.?EO.sub.i.PO.sub.j !.R.sup.15 (Ic); or R.sup.14 O.(AO.sup.2).sub.k.(AO.sup.3).sub.l.(AO.sup.2).sub.m.R.sup.15 (Id), where the various substituents and indices have defined meanings and useful silicones include those of the formula (II): R.sup.4.sub.3 SiO.?R.sup.4.sub.2 SiO!.sub.x.{(R.sup.4 Si?(O.R.sup.5.(AO.sup.2).sub.m.R.sup.6 !O}.sub.y.SiR.sup.4.sub.3, where the various substituents and indices have defined meanings.

Abstract: The present invention relates to an aqueous-based coating composition for forming strippable, protective coating for protecting surfaces, such as glass, metal, ceramic, plastic or other materials of construction. More specifically, the compositions and coatings formed therefrom of this invention are particularly useful in connection with protecting precision surfaces, such as optical lenses, including but not limited to ophthalmic lenses, telescopic lenses, microscopic lenses, and the like, which protection is desirably only of a temporary nature.

Abstract: The viscosity of a solvent is modified by thickening the solvent with a silicone latex. A silicone latex having a plurality of crosslinked polysiloxane particles is first prepared by mixing the siloxane polymer, a surfactant, and water; emulsifying the mixture to a gel phase; diluting the emulsion with water; adding a cure package (i.e., a catalyst, a crosslinker, or both, or a self catalytic crosslinker); and then without removing the water from the latex and after the particles of siloxane polymer in the latex have been cured, mixing the latex and solvent to thicken the solvent, forming viscous liquids, gels, and pastes. Water in the latex thickened solvent composition can be stabilized by adding a silicone polyether during mixing of the latex and the solvent.

Abstract: This invention relates to 1,2-diol functional polysiloxane emulsions obtained by a variety of polymerization methods. This invention further relates to an organopolysiloxane emulsion comprising an organopolysiloxane polymer having pendant organic diol groups, at least one nonionic surfactant, at least one anionic surfactant, and water. The emulsions of this invention are useful as fiber treatment agents and provide softness and hydrophilicity to fibers treated with the emulsion.

Abstract: Aqueous dispersion of a vinylidene fluoride (VdF) polymer which comprises a VdF polymer having a particle size of not more than 200 nm and contains 30 to 50% by weight of solids and not more than 1% by weight of a fluorine-containing surfactant on the basis of water. This aqueous dispersion is prepared by emulsion-polymerizing VdF monomer or a monomer mixture containing VdF under coexistence of not more than 1% by weight of the fluorine-containing surfactant and 0.001 to 0.1% by weight of a nonionic non-fluorine-containing surfactant on the basis of water, and is suitably used for paints.

Abstract: Disclosed are novel crosslinked polymers derived from methylol phenols and maleic acid species, and methods of synthesizing these macromolecules. Polyesters and chromandicarboxylic groups are the dominant linkages in the structure of general formula: ##STR1## R is H or a spacing group between aromatics, R.sub.1 is an aldehyde substituent, R.sub.2 a spacing group belonging to multihidric alcohols, a maleyl grouping, and n a whole number either 0 or 1.

Abstract: Aqueous polymer emulsions are obtained by polymerizing a mixture of hydrophobic and hydrophilic ethylenically unsaturated monomers by the free radical aqueous emulsion polymerization method and using, as the dispersing medium, a mixture of water and an organic solvent which is not completely soluble in water, the amount of solvent accounting for more than 20% by weight of the total amount of monomers to be polymerized.

Abstract: Disclosed is an aromatic diisocyanate prepolymer combined with a dibasic ester, preferably a mixed dialkyl ester of adipic, glutaric and succinic acids, which when used with amine or polyol curatives to make solid, non-foamed elastomeric polyurethane and/or polyurethane/urea products reduces viscosity and improves wettability of the castable polyurethane prepolymer without loss of cured physical properties. This improved wettability of the liquid prepolymer is useful for impregnation of fabrics, preferably polyesters, during the manufacture of a polyurethane coated fabric type belting.

Abstract: A process for the preparation of a copolymer of carbon monoxide with an olefinically unsaturated compound in which a powder of a copolymer of carbon monoxide with an olefinically unsaturated compound is suspended in a liquid diluent. The suspension is contacted with a catalyst composition which is soluble in the diluent and which is based on a Group VIII metal and a bidentate ligand. The catalyst composition is used in such a quantity that in the polymerization mixture more than 0.1 mmoles of the Group VIII metal is present per liter of liquid phase.

Abstract: A secondary stabilizer for emulsion polymers is disclosed. The secondary stabilizer is a polyester containing diol residues, residues of olefinically unsaturated dicarboxylic acids which carry sulfonate groups and residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The residues of the olefinically unsaturated dicarboxylic acids comprise from 70 mole-% to 99 mole-% of dicarboxylic acid residues in the polyester and from 1 mole-% to 30 mole-% of residues of dicarboxylic acids which do not contain olefinic unsaturation or sulfonate groups. The polyester secondary stabilizer is not a surfactant (does not significantly lower the surface tension of water) and in addition is biodegradable.

Abstract: Low molecular weight siloxane fluids are thickened by silicone elastomers. The silicone elastomers are made by combining in one pot an .tbd.Si--H containing siloxane, a mono-alkenyl polyether, an alpha, omega-diene, and a low molecular weight siloxane fluid. An elastomer, i.e. gel, with polyether groups is produced. The elastomer can be swollen with the low molecular weight siloxane fluid under shear force, to provide a uniform silicone paste. The silicone paste has excellent spreadability upon rubbing, and possesses unique rheological properties in being thixotropic and shear thinning. The silicone paste can be easily emulsified with water to form a stable uniform emulsion, without using a surfactant to allow normally immiscible materials to become intimately mixed.

Abstract: To economically produce a polyacetal copolymer excellent in properties including thermal stability by copolymerizing trioxane as the main monomer through simple steps, a polyacetal copolymer is produced by copolymerizing trioxane as the main monomer using a nonvolatile protonic acid catalyst as a polymerization catalyst until the conversion reaches at least 60% (based on all monomers), and then vaporizing unreacted monomers to separate, remove, and recover the same from the polymerization system to thereby reduce the residual monomer content of the polymerization system to 5% by weight or lower.

Abstract: In an RTV organopolysiloxane composition comprising a hydroxy-terminated diorganopolysiloxane and an organic silicon compound having at least three hydrolyzable groups, there is blended calcium carbonate which has been treated with 1-2.5% by weight of an agent having a melting or softening point of at least 100.degree. C. or a saturated fatty acid having at least 21 carbon atoms. The composition is adhesive to even surface treated aluminum plates and maintain a firm bond under water immersion and at elevated temperatures.

Abstract: A 100% solids polyurethane adhesive composition for bonding polymeric roofing materials to roof-deck substrates is provided which includes two components. The first component comprises a monomeric or polymeric diisocyanate, or a polyurethane prepolymer formed by the reaction of the monomeric or polymeric diisocyanate with a polyol. The second component comprises a polyol selected from the group consisting of a polyether or polyester polyol, an alkanolamine diol, a hydroxyl-terminated homopolymer of polybutadiene, and mixtures thereof. The first and second components are combined such that the ratio of isocyanate groups in the first component to the ratio of hydroxyl groups in the second component is from about 0.5:1 to 1.5:1.

Abstract: A polyisocyanate prepolymer composition which comprises the reaction product of a) diphenylmethane diisocyanate composition and b) an active hydrogen containing compound having a number average molecular weight of at least about 2000 wherein the reaction is carried out in the presence of a diluent capable of maintaining the average viscosity of the resulting prepolymer below about 500 cps at 25.degree. C. The prepolymer may be reacted with a resin composition to prepare soft elastomers.

Abstract: A composition including polyalphaolefins that function as drag reducing agents and a process for the preparation of polyalphaolefins that function as drag reducing agents are disclosed. The process includes contacting alphaolefin monomers with catalyst particles in a polymerization mixture that includes a hydrocarbon solvent. The polymerization of the alphaolefin monomers produces polyalphaolefin drag reducing agents having an inherent viscosity of at least 10 dL/g. During polymerization of the polyalphaolcfin monomers, localized micelles compromising high molecular weight polyalphaolefin polymer are formed in micellar zones around the catalyst particles. The polymerization is conducted in the presence of a viscosity reducing agent that includes a substantially hydrophobic dispersant. The viscosity reducing agent is present in an amount sufficient to reduce the viscosity of the reaction mixture and disperse the localized micelles.

Abstract: An internal mold release system is provided which comprises (a) a polysiloxane compound; and (b) an amine salt of a carboxylic acid.

Abstract: Process for preparing a flexible foam by reacting a prepolymer having an NCO value of 3-15% by weight, which is the reaction product obtained by reacting an excessive amount of a polyisocyanate with a polyether polyol or a mixture of such polyols, said polyol or mixture having an average nominal hydroxyl functionality of from 2 to 6, an average hydroxyl equivalent weight of from 500 to 5000 and an oxyethylene content of at least 50% by weight, with water, the amount of water being 15-500 parts by weight per 100 parts by weight of prepolymer, at the start of the reaction the temperature of the prepolymer being 10.degree.-50.degree. C. and the temperature of the water being 10.degree.-50.degree. C. higher than the temperature of the prepolymer and a process for preparing a flexible foam by reacting the above prepolymer with water in the presence of a superabsorbent polymer.

Abstract: The present invention provides a (meth)acrylic molding material comprising (A) a (meth)acrylic polymer obtained by polymerization of monomer components essentially containing a monomer having (a) carboxyl group(s) and an alkyl (meth)acrylate monomer, and (B) one or more kinds of monomers containing a vinyl group, wherein 30-600 parts by weight of aluminum hydroxide and 0.01-10 parts by weight of a succinic acid derivative are added for 100 parts by weight of the total of said polymer (A) and monomer (B). The (meth)acrylic molding material is thickened by aluminum hydroxide and the thickening behavior is controlled by the succinic acid derivative to prevent the viscosity from increasing with time, accordingly, the (meth)acrylic molding material shows good workability.

Abstract: Poly(hydroxyaminoether) ammonium salts are prepared by contacting a poly(hydroxy amino ether) with a protonic acid or an alkyl halide in an amount and under reaction conditions sufficient to form a poly(hydroxy amino ether) ammonium salt having an oxygen transmission rate of less than about 0.5 cm.sup.3 -mil/100 in.sup.2 -atm(O.sub.2)-day.

Abstract: A molding compound composition of the present invention comprises a resin composition, for example, unsaturated polyester, a succinic acid derivative, and a thickening agent such as magnesium oxide, and the moisture content thereof is adjusted in a range of from 0.1 to 0.45 percent by weight. A molding compound comprises the molding compound composition and reinforced fibers such as glass fibers, and the moisture content thereof is adjusted to be in a range of from 0.1 percent to 0.4 percent by weight. As shown in FIG. 1, the molding compound composition has excellent viscosity characteristics since the initial thickening action due to the thickering agent is restrained. Although the viscosity after thickened is lower than that of a conventional composition, the stickiness of the surface of the molding compound composition is reduced.

Abstract: A process for producing a polyethylene terephthalate in which the amount of the oligomers, such as cyclic trimer etc., is lower and which causes metal mold staining to occur difficultly. The process comprises an esterification stage in which dicarboxylicacids including mainly terephthalic acid or ester-forming derivatives of such acids are esterified with glycols including mainly ethylene glycol or with ester-forming derivatives of such glycols; a liquid phase polycondensation stage in which the esterified product obtained in the esterification stage is subjected to a polycondensation in a liquid phase containing a polycondensation catalyst and having a content of an alkaline solubilizing agent of 0.

Abstract: Condensation curable silicone mold making compositions containing an olefin or acetylene polymerization inhibitor have a longer useful life for making casts from curable resins comprising a polymerizable olefin relative to compositions where such a polymerization inhibitor is absent. Particularly preferred polymerization inhibitors are the esters of thiodipropionic acid and silicon polysulfides.

Abstract: A TDI residue generated from the phosgenation of toluene diamine having an ortho-isomer content of less than 0.5% is used to produce a urethane-filled hydroxyl compound. The TDI residues useful in this invention must contain at least 10% monomeric TDI and have a total NCO content of at least 20%. These TDI residues are reacted with a monofunctional alcohol in an amount such that the equivalent ratio of isocyanate groups to hydroxyl groups is from about 0.9:1 to about 1:0.9. The resultant composition may then be dissolved in a polyhydroxyl compound to produce a urethane-filled polyhydroxyl compound. This urethane-filled polyhydroxyl compound may then be reacted with a polyisocyanate to produce a polyurethane.

Abstract: Distortion control additives are disclosed which comprise a polyisocyanate, a polyol or polyol blend having a hydroxyl functionality of 2 to 3 hydroxyl groups per molecule and an average molecular weight of at least about 500 grams per gram mole, a diol chain extender having from about 2 to 35 carbon atoms per molecule and an acrylate or methacrylate having an acrylate functionality of from 1 to 5 acrylate groups per molecule. Ultraviolet-curable liquid compositions comprising an unsaturated polymeric resin, a monomer and the distortion control additives of the present invention are also disclosed. The distortion control additives can provide substantial reductions in distortion, e.g., shrinkage, of objects produced by ultraviolet curing, eg., stereolithography.

Abstract: The present invention relates to a curable silicone composition comprising (A) an alkenyl-functional organopolysiloxane, (B) a siloxane-modified acrylic polymer, (C) an organohydrogenpolysiloxane, and (D) a hydrosilylation reaction catalyst. The curable silicone compositions of this invention cure into a highly oil-resistant and highly wear-resistant coating and are useful as base compositions for inks for silicone moldings, and are also useful for imparting release against pressure sensitive adhesives while maintaining a degree of printability.

Abstract: Processes for making storage-stable epoxy-capped polyetherester resins are disclosed. In one process, a polyetherester resin is first made by inserting a carboxylic acid derivative into a polyether. Reacting the resin with a capping agent gives an intermediate resin with a reduced content of free carboxylic acid groups. Finally, the intermediate resin reacts with an epoxy compound in the presence of a finishing catalyst under conditions effective to give an epoxy-capped resin. The resins have low weight average molecular weights (less than about 8000), narrow molecular weight distributions (less than 6), and low viscosities, making them an excellent choice for low-VOC formulations. The finishing catalyst helps to minimize resin viscosity drift and improves shelf stability. Curing the resins with a vinyl monomer gives thermosets with an excellent balance of physical properties, including excellent water resistance.

Abstract: Finishing agents comprise the combination of an alkoxysilane surface active agent, a silanol condensing catalyst, and a nonaqueous liquid or solid medium, or the combination of an alkoxysilane surface active agent, an acid catalyst and a liquid or solid medium. In the latter embodiment, it is preferred that at least one of the alkoxysilane surface active agent and the acid catalyst be microencapsuled. The finishing agent permits formation of chemically adsorbed protecting films. Such protecting films are used for substrates of such equipments as electronics products, electric domestic products, automobiles, industrial equipment, mirrors, lenses for glasses and the like. The protecting films have a durability and heat, weather and abrasion resistance, and also water and oil repellent properties.