Abstract: Aqueous dispersions of particulate polyvinylbutyral are disclosed, said dispersions comprising an amount of hydrosolubles dissolved in the aqueous phase thereof, the content in the dispersions of said dissolved hydrosolubles being less than about 2.5% by weight, based upon the weight of the polyvinylbutyral. Said dispersions are useful in the formulation of certain coating compositions, e.g., paints and varnishes.

Abstract: A storage-stable food composition, expandable with either milk or water, even at acidic pH, into an organoleptic/nutritional edible food substrate, is comprised of (i) a successive anion exchange resin/silica or silica/anion exchange resin extracted lactoserum protein fraction, and (ii) a Xanthomonas hydrophilic colloid.

Abstract: An active or passive electronic component is encapsulated within a bis-imido polymer molding composition, said polymer comprising (i) the thermosetting prepolymeric reaction product between a bis-imide having the structural formula: ##STR1## in which D represents a divalent organic radical containing an olefinic carbon-carbon double bond and A is a divalent organic radical containing from 2 to 30 carbon atoms, and a polyamine having the structural formula:R(NH.sub.2).sub.x (II)in which x is an integer equal to at least 2 and R represents an organic radical of valency x, the amount of bis-imide being 0.55 and 25 mols per mol of NH.sub.2 groups provided by the polyamine; and said molding composition further comprising (ii) a free-radical polymerization initiator, and (iii) filler.

Abstract: A polishing process for mineral and organic ophthalmic lenses involves essentially a first step of mixing cerium oxide powder or zirconium oxide powder with (a) an alkali metal or ammonium salt of the condensation product of naphthalene sulphonic acid with formaldehyde, or of lignin sulphonic acid serving as an anionic deflocculating agent in an amount necessary to cause deflocculation, (b) an electrolyte containing a metal cation having a valency greater than 1, and (c) water, to form a slurry in which the powder is in a state of reversible flocculation. By this method the performance of the polishing powder in terms of numbers of acceptable lenses processed by each kilo of the powder is greatly improved.

Abstract: Interpolymer latex and process for the preparation thereof, in which the latexes are aqueous dispersions of particles having a diameter which is essentially between 0.1 and 1 .mu.m of an interpolymer comprising a copolymer A of butadiene, styrene and at least one ethylenic unsaturated carboxylic acid and a polymer B of bis(2-chloroethyl)vinylphosphonate which is at least partly grafted onto copolymer A. They can be used in particular as binders, more particularly in the paper coating industry and in the textile industry.

Abstract: Shaped titanium oxide catalysts/carriers useful, e.g., for sulfur recovery via Claus catalysis, are prepared by (i) intimately admixing powdered, poorly crystalline and/or amorphous titanium oxide, said titanium oxide powder being characterized by a weight loss on ignition ranging from 1 to 50%, water and from 0 to about 15% by weight of a shaping additive, (ii) next shaping the intimate admixture which results, and (iii) thence, optionally after drying, calcining the product shaped article.

Abstract: Mixed oxide active catalysts having the formula:A.sub.a Mo.sub.c W.sub.d Co.sub.e B.sub.b O.sub.xwherein:A is at least one of the metals nickel, manganese and/or lead;B is at least one of the metals iron, bismuth, chromium and/or thallium;a is the sum of the values indicating the amounts present of each of the metals A, and is a number ranging from greater than or equal to 0 to about 4;c and d are numbers each equal to or greater than 0 and ranging to 12, with the sum c+d being about 12;e is a number ranging from about 8 to about 12;b is the sum of the values indicating the amounts present of each of the metals B, and is a number ranging from greater than 0 to about 1.

Abstract: Provided are heat-stable polyphase polyamido compositions having improved mechanical properties which comprise (i) from 50 to 99% by weight of a nylon polyamide resin matrix and (ii) from 1 to 50% by weight of a particulate disperse phase comprising a polyamide incompatible with the polyamide resin matrix, and methods for the preparation thereof. Shaped articles comprising said compositions exhibit improved physical properties, particularly with regard to impact strength.

Abstract: A process for preparing orthotrifluoromethyl aniline from trifluoromethyl benzene is disclosed.

Abstract: Non-woven fabrics and in particular cloths for hygiene use, comprising a layer of fibers which are fixed by at least one binder. The binder is an interpolymer comprising a copolymer A of butadiene, styrene and at least one ethylenic unsaturated carboxylic acid and a polymer B of bis(2-chloroethyl)vinylphosphonate which is at least partly grafted onto copolymer A, having enhanced suitability for heat sealing and increased hydrophilia.

Abstract: Elastomeric/polymeric matrices, e.g., rigid polyvinyl chloride resins, are reinforced with impact strength enhancing amounts of calcium carbonate filler particulates, said particulates being surface area treated with both an organic sulfonic acid or salt thereof, and a fatty acid or salt thereof. The resultant compositions are well adapted for the fabrication of strong, useful shaped articles therefrom.

Abstract: A process for preparing biaxially oriented hollow shaped articles, in particular bottles of thermoplastic material, by biaxial draw- and blow-molding comprises blow-molding a preform and subsequently maintaining the thermoplastic material in close contact with the hot walls of the mold at a temperature which is in the range from about the minimum effective temperature for biaxial orientation of the thermoplastic material to about 40.degree. C. above this temperature for a period of time which is sufficient to partially reduce internal residual stresses in the hollow shaped articles. Following this partial thermo-stabilization, the hollow shaped article preferably is subjected to cooling, whereby the pressure within the article is at least partially maintained or the shaped article is cooled or allowed to shrink and subsequently subjected to a second blow-molding procedure.

Abstract: Novel thermosetting compositions, including a polyimide/N-vinylpyrrolidone prepolymer, optionally comprising an unsaturated polyester, and an epoxy resin, are well adapted for the molding of a variety of useful shaped articles.

Abstract: New thioloesters of the formula: ##STR1## wherein R.degree. represents hydrogen, alkyl, vinyl, cyanomethyl or a protecting radical, R' represents hydrogen or a protecting radical, R represents alkyl, L-2-amino-2-carboxyethyl, phenyl or various heterocyclic radicals, and their syn and anti isomers and mixtures thereof, and metal salts thereof and addition salts thereof with tertiary nitrogen-containing bases, are intermediates useful in the preparation of cephalosporins having anti-bacterial properties.

Abstract: Pasty organopolysiloxane compositions having a penetration of from 80 to 400 and which can be thermoset into elastomers having good mechanical properties, are comprised of an intimate admixture of (i) 100 parts by weight of a diorganopolysiloxane oil having a viscosity of from 500 to 300,000 mPa.multidot.s at 25.degree. C., (ii) 7 to 85 parts by weight of reinforcing silicas having a specific surface area of at least 50 m.sup.2 /g, said reinforcing silicas comprising from 55 to 95% precipitated silica and 5 to 45% pyrogenic silica, (iii) 1 to 20 parts by weight of a structuring inhibitor, and (iv) 0.1 to 4 parts by weight of an organic peroxide cross-linking agent.

Abstract: Flexible, homogeneous and transparent copolyamides comprise the polycondensation products of adipic acid, fatty acid dimer and hexamethylenediamine, the molar ratio of weight adipic acid to weight of total acid in each ranging from about 0.5 to 0.99, and that point obtained by plotting, along the abscissa, such molar fraction of adipic acid versus, along the ordinate, any individual copolyamide melting point, falling within that area A B C D outlined on the attached FIGURE of Drawing. The subject copolyamides are prepared either by polycondensing a homogenized prepolymer thereof, or by directly copolycondensing a homogeneous, inert solvent solution of monomers. The homogeneous and transparent copolyamides exhibit improved flexibility and high tenacity coupled with good resistance to hydrolysis and good heat resistance, with the copolyamides being useful for providing shaped articles such as moldings, films or filaments of marked uniformity via injection molding, extrusion or spinning.

Abstract: An active oxidation catalyst having the formula:A.sub.a Mo.sub.c W.sub.d B.sub.b O.sub.xwherein A is at least one of the metals cobalt, nickel, manganese and/or lead; B is at least one of the metals iron, bismuth, chromium and/or thallium; a is the sum of each of the metals A and ranges from greater than zero to about 12; c and d each ranges from zero to 12, with their sum being about 12; b is the sum of each of the metals B and ranges from greater than zero to about 1.

Abstract: Glycidyl polyethers of polyphenols are prepared by reacting at least one alkali metal salt of a polyphenol with at least one 1-halogeno-2,3-epoxyalkane, in an anhydrous and essentially aprotic reaction medium, and in the presence of a catalytically effective amount of a catalyst which comprises a cross-linked organic polymeric support, said support having a plurality of catalytically active functional groups covalently coupled thereto, the free valence of said functional groups having the structural formula: ##STR1## The subject process is admirably suited, for example, for the preparation of epoxy resins from the disodium salt of bisphenol A and epichlorohydrin.

Abstract: A novel powder preparation, comprising a base of a sucroglyceride on a support of an edible salt of casein and a maltodextrin.The powder preparation is easy to handle and to incorporate into a dough, and it improves certain rheological properties of the dough. The powder preparation provides particular advantages in dough for baking crackers, industrial bakery products, leavened and unleavened flake pastry, lining pastry, and the like.

Abstract: A device for putting into contact substances existing in at least two different phases, one of which is a gaseous phase introduced into a cylindrical section for helicoidal flow, a divider extending axially through the cylindrical section having openings for passage of the helicoidal streams therethrough to a bicone, an axial passage for introduction of the other phase into the path for engagement by the helicoidal streams for copulverization.