Abstract: Living random (meth)acrylic copolymers, facilely converted into random co(meth)acrylates and block copolymers thereof, comprise the anionic copolymerizates of at least one comonomer A with at least one comonomer B selected from among the (meth)acrylates and maleimides, at least one of the comonomers A and B comprising a (meth)acrylate, in the presence of (i) at least one alkali or alkaline earth metal, mono- or difunctional initiator and (ii) at least one ligand, for example a nonnitrogenous macrocyclic complexant, e.g., a crown ether, or an alkali metal alcoholate.

Abstract: Radiation resistant, gadolinium oxide modified, thermoplastic polymers which may be used for containing nuclear waste.

Abstract: Monomers of the formulae: ##STR1## and ##STR2## as well as polymers and copolymers thereof wherein n=2-20; R=H, CH.sub.3 or CHOHR' where R'=straight-chain or branched alkyl, optionally substituted by hydroxyl, alkoxy or ester substituents, straight-chain, branched or cyclic alkenyl, aryl, optionally substituted by halogenated, nitro or alkoxy substituents, unsaturated heterocycle, alkylaryl and arylalkyl, R=CH.sub.3 in formula (I) in the case of monomers and homopolymers wherein n=2 and in the case of monomers wherein n=4.

Abstract: Nonazeotropic solvent blends useful for cold cleaning applications in an open environment containing an HCFC, HFC or PFC component having no flash point (such as 141b), a higher boiling nonflammable chlorinated solvent (such as perchloroethylene), and a moderately flammable, intermediate boiling, oxygenated organic solvent (such as n-butanol).

Abstract: Polyblend molding compositions, well adopted for the production of flame-resistant and adhesively integral composite shaped articles, are formulated from particulates of (a) at least one vinyl chloride polymer, (b) at least one polyolefin, and (c) at least one .alpha.-monoolefin terpolymer having a vinyl chloride polymer grafted to the backbone thereof.

Abstract: Thermally stabilized initiator compositions comprising:(a) at least one dialkyl peroxydicarbonate, and(b) a stabilizing effective amount of a compound of Structure I: ##STR1## wherein R.sub.1, R.sub.2 and Z are as defined in the summary of the invention section, processes for their preparation and use are disclosed.

Abstract: 35% to 45% by weight concentrated aqueous solutions of ferric chloride, directly useful as flocculating agents in a variety of water treatments, are prepared by (a) digesting iron with a dilute aqueous solution of hydrochloric acid until such acid has essentially been consumed and thereby producing an aqueous solution of ferrous chloride; (b) reacting chlorine with such aqueous solution of ferrous chloride, in the presence of a recycled aqueous solution of ferric chloride; (c) decompressing the step (b) reaction product solution to vaporize water therefrom, thereby concentrating same; and (d) recycling a fraction of the decompressed liquid phase to step (b) and recovering remaining fraction as final product aqueous solution of ferric chloride.

Abstract: The invention relates to the preparation of n-perfluorooctyl bromide. The continuous process according to the invention consists in reacting bromine with 1-hydroheptadecafluoro-n-octane in the gaseous phase, at a temperature between 450.degree. and 520.degree. C. in a Br.sub.2 /C.sub.8 F.sub.17 H mole ratio which can be from 0.2 to 5 and with a contact time between 2 and 240 seconds.The C.sub.8 F.sub.17 Br selectivity is almost complete and information of toxic sub-products like perfluoroisobutene is avoided.

Abstract: In an improved process and plant for carrying out liquid phase fluorination in the presence of a catalyst, consisting in reacting hydrofluoric acid and an organic starting material in a reaction zone, and in separating, in a separating zone, reactional mixture and at least one light fraction containing the desired fluorinated organic products and at least a first part of the sub-fluorinated organic products formed, and a heavy fraction that includes the remainder of the sub-fluorinated organic products formed, and further comprising partial condensation of the said light fraction in order to obtain a gaseous phase containing the desired fluorinated organic products and a liquid phase containing said first part of the said sub-fluorinated organic products, said heavy fraction being returned to said reaction zone and said liquid phase being returned as a reflux to the top of the separation zone, intermediate recovery is carried out at, or in the proximity of, the lower portion of said separation zone.

Abstract: Novel dielectric liquids for such electrical components as transformers, capacitors and cables, especially adopted for low temperature applications, comprise a mixture of benzyltoluene and (methylbenzyl)xylene isomers, notably a mixture of benzyltoluene/dibenzyltoluene isomers with (methylbenzyl)xylene/di(methylbenzyl)xylene isomers.

Abstract: Novel functionalized peroxides which may be used as crosslinking, grafting and curing agents, initiators for polymerization reactions and as monomers for condensation polymerizations to form peroxy-containing polymers, which in turn can be used to prepare block and graft copolymers, have the following Formula I: ##STR1## R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, X, Y.sup.1, Y.sup.2, Y.sup.3, Z.sup.1, Z.sup.2, x, y and z are as defined in the Summary of the Invention.

Abstract: Aqueous paint stripper formulations containing a solvent system comprised of an ester such as benzyl formate and methods for using the same to strip paint.

Abstract: Thermally stabilized initiator compositions comprising:(a) at least one dialkyl peroxydicarbonate, and(b) a stabilizing effective amount of a compound of Structure I: ##STR1## wherein R.sub.1, R.sub.2 and Z are as defined in the summary of the invention section, processes for their preparation and use are disclosed.

Abstract: This invention relates to novel peroxide blends which are liquid at 25.degree. C. and lower, their method of preparation and their use in curing peroxide crosslinkable polymers.The blend is a mixture of the meta isomers or the meta and para isomers of the compounds of Formulae I, II and III and optionally Formula IV (all as defined herein) in such proportions that the composition provides a liquid mixture at 25.degree. C. or below which has a high crosslinking efficiency for polymeric materials.

Abstract: In order to replace the chlorodifluoromethane in air conditioning systems, the invention proposes the use, as refrigerant fluid, of a mixture containing by mass from 26 to 34% of difluoromethane, from 56 to 73% of 1,1,1,2-tetrafluoroethane and from 1 to 10% of tetrafluoromethane or octafluoropropane.

Abstract: Aluminum nitride (AlN) is continuously produced by continuously carbonitriding a continuously replenished charge of alumina, for example successive charges of alumina/carbon extrudates, in a reaction zone comprising at least one conduit, the ratio of the exchange surface area/volume of which at least one conduit ranging from 5 to 50 m.sup.-1, preferably from 10 to 50 m.sup.-1, and continuously withdrawing product AlN therefrom.

Abstract: High impact strength cast sheet materials having an unnotched Charpy impact strength of at least 60 kJ/m.sup.2 comprise an interpenetrating network of a major amount of a reticulated methyl methacrylate polymer and from 3% to 8% by weight of an elastomeric polyurethane.

Abstract: A stable composition having a deodorizing action includes a sequenced polyetheresteramide polymer and an undecylenic acid or a lipid-soluble or water-soluble derivative thereof. Suitable derivatives include the C.sub.1 to C.sub.6 alkyl esters of undecylenic acid.

Abstract: The invention relates to the production of colorless aqueous solutions of fluoboric acid from colored effluents of boron trifluoride hydrate. The process essentially consists of treating the colored effluent with an aqueous solution of HF, and then placing the solution obtained in contact with an activated carbon.

Abstract: Contaminating amounts of sulfate ions are removed from aqueous saline solutions comprised thereof by (i) contacting such saline solution with a zirconium compound, at an acidic pH, (ii) separating the resulting medium into (a) a saline solution depleted in sulfate ions and (b) a zirconium compound onto which said sulfate ions are sorbed, (iii) desorbing the sulfate ions from the stage (ii) zirconium compound at a basic pH, and (iv) separating the medium of desorption into (1) a basic aqueous solution enriched in sulfate ions and (2) a zirconium compound substantially devoid of sulfate ions, with the proviso that the zirconium compound is a novel hydrated zirconium hydroxide having the formula Zr(OH).sub.4 .multidot.xH.sub.2 O, in which x ranges from 4 to 200, and such zirconium compound comprising an undried gelatinous precipitate thereof.