Abstract: Process for the stabilization of particles containing peroxygen compounds and bleaching compositions containing particles stabilized according to this process. The particles containing peroxygen compounds are kept in a fluidized bed. A coating agent which is insoluble in water and melts at low temperatures is introduced in the form of solid particles into the fluidized bed. The fluidized bed is kept at a temperature at least equal to the melting point of the coating agent.

Abstract: Glucopeptide in the form of a white powder, which is effective for prevention or treatment of nephritis, is produced by: preparing a concentrated extract from watermelon pulp juice; adding a lower alcohol to this extract to obtain an alcoholic solution with an alcohol concentration of approximately 80 to 95% by weight; adding acetone to the resulting solution in a volume of 1.5 to 2.5 times the volume of the solution to obtain a precipitate of glucopeptide; repeating at least once the purification procedure for the precipitate which comprises dissolution with a similar alcohol and precipitation from the resulting solution with acetone; and finally removing the remaining solvent to dryness.

Abstract: A blend of natural and synthetic rubbers having processability and improved green strength and building tack is provided. The blend comprises from about 5 to 55 parts by weight of natural rubber, from about 30 to 50 parts by weight of a conjugated diene-containing synthetic rubber and, from about 5 to 50 parts by weight of a substituted acrylamide-containing synthetic rubber. The latter synthetic rubber comprises from about 0.3 to 10 percent by weight of an N-(alkoxymethyl)acrylamide monomer, based upon the weight of the substituted acrylamide-containing rubber.

Abstract: This invention relates to unique and novel blend compounds of an amine neutralized sulfonated elastomeric polymer and an unsulfonated elastomeric or thermoplastic polymer. These compounds can also be blended with fillers and/or oils when the sulfonated polymer is elastomeric. The materials display thermoplastic character.

Abstract: This invention relates to unique and novel compositions based on chemically combining a sulfonated polymer and a tertiary amine terminated polylactone composition. The resulting amine neutralized sulfonated polymer compositions have a variety of uses including those as diverse as adhesive agents, thermoplastic elastomers, additive uses wherein these materials can be utilized to compatibilize two different polymers which are normally incompatible. These compositions can also be blended with fillers and/or oils when the sulfonated polymer is elastomeric. The materials display thermoplastic character.

Abstract: A water-absorbing rubber composition comprising (A) a 1,3-diene rubber with a crystal or glass region content as measured at an ordinary temperature of 5-50% and (B) a highly water-absorbing resin dispersed in the said rubber, the said highly water-absorbing resin being a product of crosslinking of a polymer which contains as monomer component thereof at least 40 mole percent of an .alpha.,.beta.-unsaturated compound containing 1 or 2 groups each selected from the class consisting of a carboxyl group and a group convertible to a carboxyl group with at least one crosslinking agent selected from the class consisting of a polyfunctional epoxy compound and a polyamine, the resin being in the form of a powder capable of passing through a 20-mesh Tyler screen and absorbing 20-500 times its own weight of distilled water. The composition can absorb water rapidly and produce a high swelling pressure, and has good durability in the swollen state.

Abstract: Unsaturated esters can be prepared from dicarboxylic acids and dibromoneopentyl glycol with improved resin color in a shorter reaction time with minimal corrosion of metallic reaction vessels and with a net energy saving by the process using an aryl sulfonic acid as the esterification catalyst and following completion of the reaction neutralizing the acid catalyst.

Abstract: Compositions useful as friction particles comprised of tri- and/or tetrafunctional phenol, difunctional phenol, aldehyde, a protective colloid, and a reaction promoting compound. The friction particles are formulated into friction elements. A process for producing the friction particles in particulate form.

Abstract: 2-Alkylidene-1,3-dioxolanes and 2-(1-alkylalkylidene)-1,3-dioxolanes are employed as acid acceptors in methylchloroform, trichloroethylene or mixtures thereof. The preferred acid acceptor is 2-methylene-1,3-dioxolane.In another aspect of the invention, aliphatic aldehyde hydrazone is employed to stabilize 2-alkylidene-1,3-dioxolane and 2-(1-alkylalkylidene)-1,3-dioxolane. The preferred aliphatic aldehyde hydrazone is acetaldehyde dimethylhydrazone.

Abstract: A vulcanizable rubber mixture which will give the desired properties of leather-hard rubber and can also be extruded with a mixture which gives soft rubber. The composite profile from the extrusion has an area of leather-hard rubber and an area of soft rubber. The composite profile is heated by hot air and/or uhf radiation to 180.degree. to 280.degree. C. and the vulcanized profile cooled very rapidly to 10.degree. to 50.degree. C.

Abstract: Magnetic imbiber polymers are prepared by grafting a water soluble polymer on the surface of an oil imbiber polymer and exposing the grafting imbiber polymer to a colloidal magnetic material such as magnetic iron oxide.

Abstract: A rubber composition comprising a specific extender oil-extended styrene.butadiene copolymer rubber, at least one other diene rubber and, as required, carbon black, the rubber composition being useful in the preparation of tire treads having decreased rolling resistance without decreasing braking performance. This invention also relates to a specific two-step mixing method for preparing a rubber composition for producing tire treads having further improved rolling resistance and like properties.

Abstract: A rubber composition for a side wall of tires comprising a polymer blend of 20-100 parts by weight of solution polymerization star shaped SBR and 80-0 parts by weight of natural rubber and/or diene synthetic rubber. The glass transition temperature (Tg) of said star shaped SBR is preferably less than -50.degree. C. Styrene content in said star shaped SBR is preferably less than 20% parts by weight.

Abstract: A blend of (I) a thermoplastic material or (II) a rubber polymer with (III) an elastomeric interpolymer, where said interpolymer is prepared by aqueous emulsion polymerizing a monomer mixture comprised of (A) diene, (B) comonomer of selected esters and amides and (C) termonomer selected from (1) vinylic monomers and (2) alkyl esters.

Abstract: The invention disclosed relates to novel .epsilon.-caprolactone co-polyesters which when combined with diisocyanates are useful as binders in solid urethane-type propellant formulations. Said co-polyesters are prepared by the reaction, in the presence of a catalyst, of epsilon-caprolactone, a diol (as a co-catalyst for the reaction) and a dicarboxylic acid.

Abstract: This invention relates to an agent for preventing the flooding of color pigments in aqueous plastic dispersion paints, plastic-based plasters, and distemper paints containing cellulose ethers, which is based on a block polymer in which a di- or polyamine is present as the initial molecule on which alkylene oxide units are added, said block polymer being obtained from one mole of a di- or polyamine of the general Formula I ##STR1## wherein R is an alkylene group with 2 to 6 carbon atoms, and x is a whole number from 1 to 4, by reaction with about 5 to 50 moles of ethylene oxide, followed by reaction with about 5 to 100 moles of propylene oxide.

Abstract: A continuous process for concentrating polymer solutions, particularly solutions of halogenated aromatic polyesters in methylene chloride, is provided. The polymer solutions, are first passed through a heating zone where they are heated to a temperature of not less than the temperature at which the solvent thereof evaporates. The heated solution is then passed through an orifice or a multiplicity of orifices (such as a spinneret) located in an evaporation chamber containing a saturated atmosphere of solvent vapor which is maintained within specifically defined temperature limits where flash evaporation of the solvent takes place in the absence of the formation of polymer gels or skins. The polymer solutions are concentrated to a final concentration higher than the initial polymer solution concentration.

Abstract: A conveyor 4 driven by a motor 5 feeds thermoplastic waste material 2, such as the trimmed-off edges of extruded plastics sheets, to a compression chamber 8 at the inlet of a heating box 10 of an extruder 11. The conveyor operates intermittently in synchronism with the movement of a plunger 40 operated by a hydraulic cylinder 42 which compresses the waste material to the level of a restraining member 50 controlled by a pneumatic cylinder 54. The member 50 comes into operation as the plunger 40 reaches the bottom of its stroke and holds the plastics material in a compressed condition while the plunger 40 rises again, further material 2 is fed to the chamber 8 and the cycle is repeated, the member 50 being withdrawn shortly before the plunger 40 reaches the bottom of its stroke.

Abstract: Glass fiber reinforced thermoplastic resins composing glass fiber, a thermoplastic resin and a copolymer of an ethylenically-unsaturated monomer and from about 1 to about 20 wt. % of copolymerizable functional monomer exhibit a marked improvement in impact properties, heat distortion values and ductility, and improved adhesion between matrix resin and fiber.

Abstract: An improved silicone resin abrasion resistant coating composition is provided, the composition comprising a dispersion of colloidal silica in an aqueous-organic solvent solution of the partial condensate of a silanol and a small amount of a polysiloxane polyether copolymer, said organic solvent comprising a mixture of water miscible polar solvents which are aggressive to plastic.