Abstract: Binders for ceramic products are provided which are crosslinkable and impart improved tensile strength to ceramic green bodies. The binders are particularly useful in tape-casting processes for the manufacture of thin ceramic sheets which are used as substrates for electronic packaging.

Abstract: The present invention relates to sulfonate containing water-dispersible or water-dissipatible sulfo-polyester compositions. The sulfo-polyesters of the present invention have a glass transition temperature of greater than 89.degree. C. In addition, the sulfo-polyesters have a dicarboxylic acid component of poly(ethylene-2,6-naphthalene dicarboxylate and a sulfo-monomer, and a diol component of at least 35 mole percent of a diol selected from ethylene glycol, 1,4-cyclohexanedimethanol, propane-1,2-diol and 2,2-dimethyl-1,3-propanediol. The sulfo-polyesters of this invention are useful in applications where increased abrasion resistance, inherent higher temperature process conditions, and improved blocking resistance are required such as in adhesives, coating materials, sizes, laminated products, aqueous printing inks, and films.

Abstract: The present invention relates to sulfonate containing water-dispersible or water-dissipatible sulfopolyester compositions. The sulfopolyesters utilize at least two dicarboxylic acids, one of which is a naphthalene dicarboxylic acid. This combination of dicarboxylic acids allows for the sulfopolyesters to maintain glass transition temperatures (Tg) of greater than 89.degree. C. and exhibit lower melt viscosities than sulfopolyesters containing all naphthalenediyl units or all isophthtaloyl units. The sulfopolyesters of this invention are useful in applications where improved heat and blocking resistance is required.

Abstract: A thermosetting printing ink composition comprising a functional copolymer of a thermosettable polyester and a polysiloxane, a pigment, a crosslinking agent and a curing catalyst which may be a strong acid or a metal salt thereof. The composition desirably also includes a reactive diluent such as a glycol, glycol ether or alcohol. The compositions are especially useful for imprinting metal containers such as beer and soda cans.

Abstract: There are disclosed dibenzofuran amorphous polymer comprising a recurring unit represented by following formula (II) and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in N-methyl-pyrrolidone at 25.degree. C., a process for producing said amorphous polymer, a dibenzofuran copolymer comprising, in addition to a recurring unit represented by following formula (II), at least one type of recurring unit represented by following general formula (III) in a specific proportion and having a molecular weight giving a reduced viscosity of at least 0.2 dl/g as measured in the form of a 0.5% (W/V) solution in concentrated sulfuric acid at 25.degree. C., and a process for producing said copolymer. ##STR1## wherein A is --O--, --CO--, --S--, --SO.sub.2 --, a divalent alkylene group or a single bond and n is a number of 0, 1 or 2.

Abstract: A process for (co)polymerizing alpha-olefins in the gas phase in a fluidized bed or mechanically stirred bed reactor using a Ziegler-Natta type catalyst or a heat activated chromium oxide/refractory oxide catalyst wherein the (co)polymerization is carried out in the presence of 0.005 to 0.2 weight %, based on the weight of the (co)polymer bed, of an inert pulverulent inorganic substance (e.g. silica) having a mean particle diameter between 0.5 and 20 microns. The process is capable of being operated at temperatures closer to the softening point of the produced polyolefin than in the absence of the pulverulent solid.

Abstract: Fibrous magnesium oxysulfate particles having a length of 10 to 100 .mu.m and a thickness of less than 1 .mu.m are used as an antiblocking agent for plastic films, especially polyolefin resin films.

Abstract: Aqueous silicone dispersions crosslinkable into elastomeric state upon removal of water therefrom, well adapted for the production of paints and silicone elastomer seals, e.g., for the construction industry, include:(A) 100 parts by weight of an oil-in-water emulsion of an .alpha.,.omega.-(dihydroxy)polydiorganosiloxane, stabilized with an anionic and/or nonionic surfactant;(B) 0.1 to 20 parts by weight of an aminosilane and/or amidosilane;(C) 0 to 3 parts by weight of a metal curing catalyst; and(D) 0 to 250 parts by weight of a non-siliceous inorganic filler, such emulsion having a pH of from 7 to 13 and a dry solids content of at least 40%.

Abstract: The specification describes and claims filled compositions, e.g. moisture curable sealant compositions which comprise 100 parts by weight of polymeric material comprising a mixture and/or a reaction product of a polydiorganosiloxane having silicon-bonded hydroxyl groups with a compound containing silicon-bonded alkoxy or alkoxyalkoxy groups, 50 to 200 parts by weight of finely divided filler and an additive which is a reaction product of an organic amine, an oxide, hydroxide, carbonate, bicarbonate or a mixture thereof with a sulphonic acid of the formula RSO.sub.3 H in which R represents a hydrocarbon group which may be halogenated. The additive is preferably a reaction product of the sulphonic acid and an oxide, hydroxide, carbonate or bicarbonate of magnesium, or calcium and the acid is preferably one in which R represents a group R'C.sub.6 H.sub.4 wherein R' represents an alkyl group having 6 to 18 carbon atoms, for example dodecylbenzenesulphonic acid.

Abstract: A silicone sealant prepared by curing and cross-linking methylhydrosiloxanes by contacting and forming a mixture of an allyl amide or an allyl ester with at least one methylhydrosiloxane in the presence of a Group VIII metal catalyst, and heating the mixture of the allyl amide, the methylhydrosiloxane, a filler, and the Group VIII metal catalyst, in the presence of ambient moisture until the methylhydrosiloxane becomes cured and cross-linked.

Abstract: A process for the preparation of an aromatic polyether by condensation of dihydric phenols with activated aromatic dihalo compounds or by self-condensation of polynuclear activated halophenols employs a mixture of sodium carbonate and sodium hydrogen carbonate as a condensation auxiliary.By this means, the relatively low reactivity of the sodium carbonate is enhanced and the reaction rate is significantly increased.

Abstract: The specification discloses a curable composition comprising 100 parts by weight of polysiloxane, 50 to 200 parts by weight of finely divided filler having an average particle size greater than 0.05 micron and not less than 0.5 parts by weight per 100 parts by weight of the filler of an additive which is a reaction product of an organic amine, or an oxide, hydroxide, carbonate, or bicarbonate or a mixture thereof with a sulphonic acid of the formula RSO.sub.3 H in which R represents a hydrocarbon group which may have halogen or amino substituents and which contains not less than six carbon atoms. Preferred additives are reaction products of the sulphonic acid and an oxide, hydroxide, carbonate or bicarbonate of sodium, magnesium, zinc, calcium, barium, aluminium or a mixture thereof. The group R of the sulphonic acid may be R'C.sub.6 H.sub.4 where R' represents an alkyl group having 6 to 18 carbon atoms and a preferred acid is dodecylbenzenesulphonic acid.

Abstract: A room temperature-curable organopolysiloxane composition, which is capable of giving a cured silicone rubber having excellent resistance against oils, e.g., automobile engine oil, and little responsible for foaming of the oil contaminated with the silicone rubber, can be prepared by first blending a silanol-terminated dimethyl polysiloxane, an iminoxy-substituted organosilane compound, e.g., vinyl tributanoxime silane, an organotin compound as a catalyst and an inorganic filler. e.g, zinc oxide, to give a uniform mixture and further admixing the uniform mixture with a trimethylsilyl-terminated dimethyl polysiloxane, an alkenyloxy-substituted organosilane compound, e.g., vinyl triisopropenyloxy silane, and a methyl polysiloxane having a network structure of the molecules as consisting of the monofunctional units of the formula (CH.sub.3).sub.3 SiO.sub.0.5 and tetrafunctional units of the formula SiO.sub.2 each in a specified amount.

Abstract: A thermally conductive silicone composition comprising:(A) 100 parts by weight of a polyorganosiloxane containing at least two silicon-bonded alkenyl groups per molecule and having a viscosity as measured at 25.degree. C. of 10 to 100,000 cP;(B) a polyorganohydrogensiloxane containing at least three silicon-bonded hydrogen atoms per molecule in an amount such that the number of silicon-bonded hydrogen atoms contained therein is 0.5 to 4.0 per alkenyl group contained in component (A);(C) a catalyst selected from the group consisting of platinum and platinum compounds, in an amount of 0.1 to 100 ppm by weight, in terms of the amount of platinum atoms, based on the amount of component (A);(D) 100 to 800 parts by weight of a heat transfer filler having an average particle diameter of 5 to 20 .mu.m and having a particle size distribution such that particles having a particle diameter of 5 .mu.m or less are 20% or more of the whole particles and particles having a particle diameter of 10 .mu.

Abstract: An improved self-bonding curable organopolysiloxane composition which contains (A) an organopolysiloxane having at least 2 silicon-bonded alkenyl groups in each molecule, (B) an organopolysiloxane having at least 2 silicone-bonded hydrogen atoms in each molecule, (C) a catalytic quantity of a platinum-type catalyst, (D) a carbonyl complex of a Group VIB element, and (E) a compound containing a silicon-bonded alkoxy group which is selected from the group consisting of silanes or siloxane oligomers. Examples of the carbonyl complex are molybdenum hexacarbonyl, tungsten hexacarbonyl, and chromium hexacarbonyl.

Abstract: The pumpability and extrudability of a mixture of linear polymer and filler can be controlled by using a mixture of filler particle sizes. For 100 parts by weight of polymer there is mixed in from 50 to 150 parts by weight of filler mixture, the filler mixture comprising from 0.5 to 50 percent by weight of a large particle size filler having an average particle diameter of from 0.5 to 10 micrometers and from 50 to 99.5 percent by weight of a small particle size filler having an average particle diameter of less than 0.1 micrometers, the large particle size filler having an average particle diameter of at least 10 times the average particle diameter of the small particle size filler. By adjusting the ratio of large particle size filler to small particle size filler, the change in viscosity of the mixture with change in temperature can be controlled.

Abstract: A composite comprising the reaction product of a filler having a reactive hydroxylated surface, a monomer or polymer containing carboxyl groups, and an organoaluminum compound, the organoaluminum compound being reacted with said hydroxylated surface and with said monomer or polymer. A preferred composite is made by reacting aluminum sec-butoxide with fiberglass and acrylic acid and methyl methacrylate under polymerization conditions.

Abstract: This invention relates to a process for preparing polyisocyanate-based polymers which have the ability to dissipate static electrical charge. The polymers are rendered semi-conductive by having incorporated into them an anti-static additive which comprises an ionizable metal salt dispersed in a polyalkylene carbonate polyol.

Abstract: This invention relates to .beta.-amino-.beta.-propiolactam derivativatives, moisture curable polyurethane compositions and their applications.The products of this invention have excellent characteristics such as good storage stability, rapid curing with atmospheric moisture and freedom from foaming.More particularly, condensed compounds are obtained by reacting specific secondary diamines such as piperazine and 1,3-(4,4'-dipiperidyl)propane with monoaldehyde having at least 3 carbon atoms, for example, isobutylaldehyde and .beta.-phenylpropylaldehyde. The .beta.-amino-.beta.-propiolactam derivatives are prepared by reacting the condensed compounds with monoisocyanate such as phenyl isocyanate and equimolar reaction products of diisocyanate with lower monohydric alcohol.In addition, the moisture curable polyurethane compositions contain said derivatives and polyisocyanate and/or polyurethane prepolymer having terminal isocyanato radicals.

Abstract: Polysiloxane compositions which harden in the presence of moisture by elimination of alcohols, which have high stability in storage while unvulcanized in the absence of moisture, which exhibit good adhesion to substrates, and which are improved by the presence of stabilizing silyl derivations of N-methyl benzamide contain:(A) 100 parts by weight of a polydimethyl siloxane which contains terminal diorganyloxyorganosilyl or triorganyloxylsilyl groups and which has a viscosity of 0.1 to 100 Pas,(B) 0 to 100 parts by weight of an .alpha.,.omega.-bis(trimethylsiloxy)-polydimethyl siloxane which has a viscosity of from 0.04 to 10 Pas,(C) 0 to 5 parts by weight of an alkoxysilane having the formulaR.sup.1.sub.a Si(OR.sup.2).sub.4-a,in whichR.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl or C.sub.5 -C.sub.6 aryl;R.sup.2 is C.sub.1 -C.sub.6 alkyl, and a is 0 or 1,(D) 0.

Abstract: Suspension polymerization a vinyl monomer in the presence of from about 0.01 to 2.0%, by weight of the total monomer content, of a carboxymethyl hydrophobically modified water-soluble, nonionic cellulose either polymer alone or in combination with an inert electrolyte or inert polyelectrolyte is disclosed. The presence of the carboxymethyl hydrophobically modified water-soluble, nonionic cellulose ether polymer alone or in combination with an inert electrolyte or inert polyelectrolyte provides suspension polymer beads of narrower polydispersity and clarity, and results in minimal latex polymer (emulsion polymer) by-products.

Abstract: Rubber based adhesives containing liquid stereospecific polybutadiene rubber, one or more hardeners or hardener systems, fillers and optionally primers, which contain one or more chemically irreversibly depolymerized solid rubbers of natural or synthetic origin in quantities of from 1.5 to 5% by weight, based on the sum of the constituents, to a process for the production of these low-viscosity rubber-based adhesives by chemically irreversible depolymerization of one or more solid rubbers of natural or synthetic origin, and to the use of these low-viscosity rubber-based adhesives in the bonding of metal components in automotive manufacturing.

Abstract: An adhesive composition comprising (1) a polymetallocarbosilane or a polycarbosilane and (2) a silicone resin. The adhesive composition further comprises an inorganic filler.

Abstract: A Mannich base of a high molecular weight acrylamide polymer can be made by reacting, in aqueous solution, the polymer with a Mannich base of a low molecular weight compound such as urea. A composition of the polymer and the Mannich base is preferably substantially non-aqueous.

Abstract: A castable mix formulation for casting ceramic articles which comprises ceramic particles and an organic resin binder composed of furfuryl alcohol and a catalyst consisting essentially of zinc chloride and para toluene sulfonic acid.

Abstract: A composition for artificial marble which comprises a polymer composition in which an inorganic substance and an organic polymer are firmly bound in one body and a vinyl compound, said polymer composition being obtained by polymerizing a polymerizable vinyl monomer, in the presence of at least one monomer selected from the group consisting of carboxylic acid monomer, sulfonic acid monomer, and sulfonate monomer, in an aqueous polymerization system containing an inorganic substance dispersed therein; and a processs for producing artificial marble from said composition by cast polymerization with the addition of a polymerization initiator.

Abstract: A silicone composition which is stable in the absence of moisture but which in the presence of water will cure at room temperature to an elastomer, comprising a polyorganosiloxane having reactive end groups, a polyester and a thickening filler.

Abstract: The propylene-ethylene block copolymer composition of the invention is excellent in transparency as well as in stiffness and low temperature impact strength.The copolymer composition of the present invention comprises (a) from 0.01 to 1.0 part by weight of a nucleating agent and (b) from 0.01 to 3.0 parts by weight of talc having an average particle size of not more than 10 microns, admixed in 100 parts by weight of propylene-ethylene block copolymer. Said propylene-ethylene block copolymer was formed in a multi-stage polymerization process wherein the ethylene content of the copolymer formed at the propylene-ethylene copolymerization stage is from 5 to 40% by weight based on the total polymerization amount of the copolymer formed at said propylene-ethylene copolymerization stage.

Abstract: A polymer composition wherein an inorganic substance and an organic polymer are firmly consolidated, which is characterized by being produced by polymerizing a vinyl monomer susceptible to radical polymerization in a polymerization system containing a dispersed inorganic substance in the presence of at least one monomer selected from sulfonic acid monomers, sulfonate monomers, or carboxylic acid monomers represented by the general formula [I] ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl group having 1 to 20 carbon atoms, phenyl group, derivative of phenyl group, or halogen atom, X is CONH, ##STR2## COO(CH.sub.2).sub.m or (CH.sub.2).sub.n (wherein R.sub.2 and R.sub.3 are each a hydrogen atom or alkyl group having 1 to 15 carbon atoms, R.sub.4 is an alkylene group having 1 to 15 carbon atoms, m is an integer of 1 to 20, and n is an integer of 0 to 20), and Y is a hydrogen atom, ammonium radical, or an alkali metal atom, or by the general formula [II] ##STR3## wherein R.sub.

Abstract: Crystalline, synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and a width dimension of less than 1 .mu.m, is outstandingly suitable as a sedimentation inhibitor for finely divided fillers in liquid substances.

Abstract: The invention provides a room temperature-curable organopolysiloxane composition comprising (a) a diorganopolysiloxane terminated at both molecular chain ends with silanolic hydroxy groups, (b) a methylpolysiloxane composed of monofunctional siloxy units Me.sub.3 SiO.sub.1/2 tetrafunctional siloxane units SiO.sub.2 in a specified molar ratio, (c) an organosilane or organopolysiloxane having at least three hydrolyzable groups bonded to the silicon atom(s) per molecule, (d) oxide, carbonate or hydroxycarbonate of zinc, and (e) a thiazole, thiuram or dithiocarbamate compound. The composition is curable by standing in air into a rubbery elastomer which is highly resistant against oils, e.g. engine oils and gear oils in automobiles, even at elevated temperatures.

Abstract: Water-in-oil emulsions of water-soluble cationic polymers, e.g., a copolymer of acrylamide and acryloylethyl trimethyl ammonium chloride, exhibiting improved emulsion stability are prepared by incorporating a water-soluble salt of a monovalent anion, e.g., ammonium chloride, into the aqueous phase at some point prior to polymerization.

Abstract: The adhesion of self-bonding, low modulus, one package, room temperature vulcanizable silicone compositions to a variety of substrates is effectively promoted by incorporation in the silicone composition, before curing, a small effective amount of an adhesion promoting composition comprising predominantly at least one diorganocyclopolysiloxane compound of the formula: ##STR1## wherein R.sup.1 may be C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 gamma-trihaloalkyl or phenyl; R.sup.2 is alkylene of from 2 to 6 carbon atoms; R.sup.3, R.sup.4 and R.sup.5 are, independently, C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkanoyl; and n is either 3 or 4.

Abstract: Polymerizable liquid synthetic resins, liquid reactive constituents of synthetic resins or liquid additives for plastics, in each case containing mineral fillers, are converted to dry, pourable mixtures by mixing with 0.25-5% by weight of a crystalline synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and width dimensions of less than 1 .mu.m, it being possible, by this means, to employ the resins not only as casting resins but also as compression moulding resins and adhesives. In addition, handling and processability are improved.

Abstract: Synthetic rubber dispersions containing carboxyl groups, free from specks and with little tendency to foaming, with advantages for their technical application contain a copolymer of 0.3 to 1.0 parts by weight of itaconic acid and 99.0 to 99.7 parts by weight of a mixture of 10 to 90 parts by weight of one or more acyclic conjugated dienes having 4 to 9 carbon atoms and 10 to 90 parts by weight of one or more aryl vinyl monomers having 8 to 12 carbon atoms and/or (meth)acrylonitrile, in which the quantity of (meth)acrylonitrile is at most 50 parts by weight and wherein up to 25 parts by weight of the non-dissociating monomers may optionally be replaced by one or more other non-dissociating copolymerizable monomers, which dispersions are stabilized with 0.05 to 0.5% by weight, based on the copolymer, of an anionic emulsifier.

Abstract: A polymer composition wherein an inorganic substance and an organic polymer are firmly consolidated, which is characterized by being produced by polymerizing a vinyl monomer susceptible to radical polymerization in a polymerization system containing a dispersed inorganic substance in the presence of at least one monomer selected from sulfonic acid monomers, sulfonate monomers, or carboxylic acid monomers represented by the general formula [I] ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl group having 1 to 20 carbon atoms, phenyl group, derivative of phenyl group, or halogen atom, X is CONH, ##STR2## COO(CH.sub.2).sub.m or (CH.sub.2).sub.n (wherein R.sub.2 and R.sub.3 are each a hydrogen atom or alkyl group having 1 to 15 carbon atoms, R.sub.4 is an alkylene group having 1 to 15 carbon atoms, m is an integer of 1 to 20, and n is an integer of 0 to 20), and Y is a hydrogen atom, ammonium radical, or an alkali metal atom, or by the general formula [II] ##STR3## wherein R.sub.

Abstract: Polymerizable liquid synthetic resins, liquid reactive constituents of synthetic resins or liquid additives for plastics, in each case containing mineral fillers, are converted to dry, pourable mixtures by mixing with 0.25-5% by weight of a crystalline synthetic calcium silicate, which can be in diverse stages of hydration and has a high length/width ratio and width dimensions of less than 1 .mu.m, it being possible, by this means, to employ the resins not only as casting resins but also as compression moulding resins and adhesives. In addition, handling and processability are improved.

Abstract: Water and a hydrated salt are both present to reduce the flammability of a flammable resin system, e.g. a capsule having two compartments each containing an interactive component and for use in e.g. a mine.

Abstract: Undesirable color formation during the preparation of a cured intumescent flame retardant is minimized by including a color stabilizing amount of at least one of certain metal phosphites, hypophosphites, sulfites and bisulfites.