Abstract: A masterbatch composition is provided, comprising greater than about 10% to about 70% by weight of organic peroxide homogeneously dispersed in a polycaprolactone carrier. The peroxide masterbatches are safer and easier to store, ship, handle and use than the peroxides from which they are made. The use of the masterbatch compositions to modify a host polymer or resin to which the masterbatch is added is also disclosed.

Abstract: A process for producing as end-product a heat-hardenable mixture forming thermosetting resin, e.g., a reactive hot-melt adhesive, comprises preparing a first pre-mixture by introducing a meltable heat-hardenable solid resin and liquid resin, flexibilizer, adhesion-promoter and/or plasticizer into a mixing zone in which the components are melted together; preparing a second pre-mixture by mixing with each other a heat-activatable hardener and thixotropic agent, hardening accelerator and/or electrical conductivity-imparting additive; introducing the melt into an extruding zone; and introducing the pulverulent pre-mixture into the extruding zone downstream of the melt-intake for mixing with the first pre-mixture at a temperature below said hardening temperature and in such amount that the content of the second pre-mixture in the end-product ranges from 10 to 50, preferably from 20 to 30 weight-% air occlusions in the melt and the extruded end-product being avoided.

Abstract: A pigment master batch suitable for filler-containing polypropylene compositions is provided. This pigment master batch comprises 100 parts by weight of a propylene homopolymer having a melt flow rate of at least 10 g/10 min. and 30-200 parts by weight of a processed pigment prepared by using a metallic salt of a fatty acid, a polyethylene wax or a polypropylene wax as a dispersion medium for pigment. A filler-containing polypropylone composition in which the above pigment master batch is incorporated is superior in dispersibility and balance of properties and can easily be processed into molded articles which are superior in balance of properties such as heat resistance, impact resistance and rigidity.

Abstract: The impact strength of a flame retarded formulated ABS resin containing an impact modifier is increased by masterbatching the flame retardant and impact modifier.

Abstract: Polyolefin films for heat sealed packaging and twist wrapping are obtained by blending under high shear conditions and a rosin or resin, preferably hydrogenated to form a concentrate containing from 10 to 90 wt. %, preferably 20 to 60 wt. % of the resin or rosin and subsequently blending the concentrate with a and extruding the resultant blend to form a film.

Abstract: Provided is a process for preparing a stable dispersion. The dispersion is comprised of a pigment, such as cuprous iodide, dispersed in a binder resin solution. The process is comprised of first dispersing the pigment into a binder resin solution, grinding the dispersion, preferably until a bi-modal distribution of pigment particles is obtained, separating the dispersed particles into two fractions and then recovering the fraction having the smaller average particle size. The resulting dispersion has been found to be quite stable and useful in transparent coatings applicable to electrophotography, electrostatic and thermal imaging elements.

Abstract: A method of preparing pure 3-butenyl triorgano oxysilanes, the intermediate products 3,4-dichlorobutyl triorgano oxysilanes and the use of the final products in rubber mixtures reinforced with silicic acid and vulcanizable with peroxides. 3,4-dichlorobutene-1 and trichlorosilane are used as initial products.

Abstract: Disclosed is a process for preparing ink millbase by use of a polymer blend of compatible polyesters and acrylic polymers. The polyesters are water-dispersible as a result of sulfonate groups on the polyester backbone. Use of the polymer blend results in an improvement in pigment particle size reduction during grinding.

Abstract: Phosphoric acid esters and their salts corresponding to the formula (I): ##STR1## wherein R represents an aliphatic, cycloaliphatic and/or aromatic moiety having no Zerewitinoff hydrogen, containing at least one ether oxygen atom (--O--) and at least one carboxylic acid ester group (--COO--) and/or urethene group (--NAOO--), and having an average molecular weight M.sub.n of 200 to 10,000, wherein the hydrogen atoms may be partially replaced by halogen atoms, and wherein the ratio of the number of ether oxygen atoms to the number of carboxylic acid ester groups and/or urethane groups in the molecule (or in every group R) is in the range from 1:20 to 20:1, and n represents 1 or 2. A method for preparing such phosphoric acid esters and salts and the use of such phosphoric acid esters or salts as dispersants or dispersing aids is also disclosed.

Abstract: The invention relates to polymer mixtures which comprise a polyester, glass fibres, a brominated polystyrene and talcum. By using milled glass fibres a polymer mixture is obtained having a high tracking index, good flame-retarding properties and a great rigidity. The invention also relates to articles formed from such polymer mixtures and to a method of preparing the polymer mixtures according to the invention.

Abstract: The method consists of the separate simultaneous extrusion, by means of two or more contiguous extruders or one extruder with two or more separate homogenization chambers, of two or more paints in powder form and the union of the extrusions in the molten state or still hot and then subsequent cooling as a single extrusion.

Abstract: A method for producing a rubber mixture. In a first stage, in a ram kneader, a master batch is produced, and in a second stage, in a batch-type process, a final mixture is produced in a ram-less kneader, without the need for intermediate storage. To improve the cooling in the ram-less kneader, the interior of this kneader is supplied with air that has such a degree of dryness that a condensation deposit is precluded. To achieve this, an essentially air tight channel is provided between the two kneaders, with a place being provided in the channel for the bottom closure of the ram kneader in a swung-out position of this closure.

Abstract: Improved polymer additive concentrate compositions used in nylon film layers. The improved concentrate comprises a carrier of a nylon polymer composition and the additive material. Preferred nylons include nylon 6; nylon 6,66; nylon 6,6; and combinations thereof. Preferred additives are antiblock agents and slip agents. The film layers may comprise a single layer nylon film, or may be part of a multiple layer composition. The films are susceptible to being used in making packaging.

Abstract: A process for producing a diaphragm for a speaker of fully carbonaceous materials which has the steps of mixing carbon powder in an organic binder carbonized after calcining, kneading the composition to uniformly mix and disperse, preliminarily molding it in a sheet shape, molding the preliminarily molded material in a diaphragm shape, insolubilizing, infusibilizing the mixture and calcining the mixture in an inert atmosphere, wherein the composition contains a titanate coupling agent. Thus, a rigid bonding strength is provided in the boundary between the organic binder and the carbon powder in the green state of the composition, and the mixture is calcined to industrially simply and inexpensively produce a diaphragm having a high hardness, a high elasticity, a high strength, a light weight, an adequately large internal loss (and thus less deformation by an external force) small distortion of sound, wide reproducing sound range, distinct sound quality and adapted for a digital audio.

Abstract: A process for preparing particles of a high water-absorbent resin which comprises mixing a powder of a high water-absorbent resin with a solution of a sorbitan surfactant having an HLB of 2.1 to 5.0 dissolved in an organic solvent, volatilizing the organic solvent from the mixture to give a resin powder with a content of the organic solvent of not more than 5% by weight, adding water to the mixture to adjust a water content in the resin powder to 25 to 60% by weight, adding an inorganic powder to the resin powder, and drying the resulting mixture. The particles of the high water-absorbent resin obtained according to the present invention are suitable for use of sanitary goods, water-retaining agents or soil conditioner in the fields of agriculture and horgiculture and other various uses.

Abstract: An improved stabilizer concentrate for use in stabilizing polymeric blend compositions which comprise a thermally sensitive interpolymer. The stabilizer concentrate comprises a carrier resin, and a stabilizing agent capable of stabilizing a thermally sensitive interpolymr. The improvement comprises employing a carrier resin having a viscosity such that the stabilizer concentrate has a viscosity of less than 60 percent of the viscosity of the polymeric blend composition.

Abstract: Polyester compositions exhibiting decreased distortion (warpage), improved processability and productivity are produced by melt-blending a thermoplastic polyester resin with between 3 to 65% by weight of a fibrous reinforcement medium, and between 3 to 65% by weight of binder-agglomerated glass granules.

Abstract: A polymer concentrate contains 15-80% by weight of a liquid, pasty or waxy additive, 5-50% by weight of a particulate solid and at least 5% by weight of a polymer. The particulate solid is finely divided and typically has a particle size in the micrometer range. The concentrate is prepared by adding the additive to the particulate solid while mixing using a solids mixing device, adding the polymer while continuing to mix, preferably at the same speed, subjecting the mixture to an elevated temperature to melt the polymer, cooling and grinding the cooled mixture.

Abstract: A plastic concentrate containing a pigment and/or filler for the production of a polyolefin coating compound for photographic support materials produced by means of a double screw extruder with degassing.

Abstract: A process for dispersing one or more powdered ignition resistant or flame retardant additives into carbonate polymers which comprises the steps of preparing a base concentrate having about 5 to about 50 weight per cent of said additives by blending said additives with a carbonate polymer having a melt flow rate from about 3 to about 20, pelletizing said base concentrate having said ignition resistant additive dispersed therein, dry blending said concentrate pellets with carbonate pellets having a melt flow rate from about 1 to about 80 whereby said polymer/concentrate blend has an amount of said additive dispersed therein effective to render said blend ignition resistant, and pelletizing or molding said carbonate polymer/concentrate blend. The use of this method gives ignition resistant carbonate polymers with improved impact properties as measured by Izod impact tests.

Abstract: A process is provided to prepare a composition of bitumen, carbon black, and a block copolymer, the block copolymer being a hydrogenated or unhydrogenated block copolymer comprising, before hydrogenation, at least two blocks which comprise predominantly polymerized monoalkenyl arenes and at least one block which comprises predominantly polymerized conjugated diolefins. The process involves blending of the carbon black with the block copolymer and then combining the carbon black-block copolymer mixture with bitumen. The product of the process of this invention has excellent storage stability and aged tensile strength properties, and has superior weatherability.

Abstract: A batch process for making a resin includes adding at least one portion of colored resin material to a resin base material of another color and mixing the combination including the colored material only sufficiently to incomplete blend the colored material into the base mix so that the colored material is only partially dispersed in the resin base. The multicolored product may be foamed or unfoamed material.

Abstract: An improved moldable low density thermoplastic composite containing hollow glass spheres comprising a blend of thermoplastic resin, glass fiber reinforcement, and a concentrate of hollow glass spheres dispersed in thermoplastic resin.

Abstract: Disclosed are novel, stable aqueous dispersions of ionic polyurethane-urea prepared by reacting an aliphatic or cycloaliphatic diisocyanate, an organic polyol, a large particle size hydrophobic copolymer polyol, a difunctional isocyanate reactive component, and a water dispersible amine chain extender. Also disclosed are the films and coated substrates obtained through the use of said dispersions as coatings.

Abstract: A biaxially-stretched film is made of a resin composition composed of 100 parts by weight of a substantially linear poly(arylene sulfide) having a melt viscosity of at least 1,000 poises and 2-25 parts by weight of a styrene-based resin. The film is produced by diluting a master batch, which has been prepared in advance and is composed of the poly(arylene sulfide) and styrene-based resin, with an additional supply of the poly(arylene sulfide) so as to prepare a resin composition containing the polystyrene-based resin in an amount of 2-25 parts by weight per 100 parts by weight of the poly(arylene sulfide), and then biaxially stretching the thus-prepared resin composition.

Abstract: A stable fluid acidic concentrated aqueous slurry of positively charged particles of a calcined kaolin clay pigment wherein the dispersant is a water-soluble organic cationic material, such as a quarternary ammonium polyelectrolyte.

Abstract: It now has been found that uncured modified rubber compositions comprising mixtures of elastomers and a reinforcing filler can be prepared having improved properties.

Abstract: Process for the production of a binder modified with synthetic material for building materials, especially street-building material, in which for the formation of the binder, molten bitumen together with a thermoplast or a thermoplast mixture, preferably an olefin polymer, is subjected to a homogenization treatment. To the mixture containing the bitumen and a thermoplast or a thermoplast mixture, there is supplied in the form of kinetic energy an amount of energy corresponding to the difference between the treatment temperature and the disintegration temperature of the thermoplast or thermoplast mixture to form readily reacting molecular fragments of the thermoplast or thermoplast mixture. Preferably, the mixture containing bitumen and the thermoplast or a thermoplast mixture is driven through a narrow gap between two mixing tools standing opposite to one another and rotating relatively to one another.

Abstract: Colored plastic granules are obtained by mixing plastic granules with particles of a colouring agent composition until the coloring agent composition particles are attached to the surface of the plastic granules. The coloring agent composition particles used are substantially spherical; in the particles the coloring agent, such as a pigment, is completely wetted with the carrier present in the composition. The method includes a mixing step in which granules to be coated are mixed, substantially at ambient temperature, with colouring agent composition particles. During mixing the temperature is controlled to remain below the melting temperature of the carrier use.

Abstract: Additive modified blends of thermoplastic resins are prepared by combining rubber modified polycarbonate or aromatic polyester carbonate containing concentrate resin with a let-down resin and/or regrind resin.

Abstract: Disclosed is a damping member comprising, as main components, a petroleum resin, asphalt and mica. By selecting and using mica as the filler and incorporating mica in an amount smaller than the amount of asphalt, the adhesion follow-up property to a substrate can be improved.This damping material can be attached simply and assuredly to a substrate having a curved surface, such as a tube or pipe, an air-conditioning duct or a part of a building or vehicle by heat-pressing or heat-fusion-bonding, and a product having an excellent damping effect is provided.

Abstract: Disclosed is a thermochromic color masterbatch for use in a thermoplastic resin comprising a wax having substantially homogeneously dispersed therein a thermochromic granular material which is coated with a hydrophilic high-molecular weight substance, said thermochromic granular material being a mixture of a thermochromic composition comprising an electron-donating chromogen, an electron acceptor and a solvent with a thermosetting resin.

Abstract: A package comprised of (A) compounding ingredients for unvulcanized rubber packaged in (B) a film comprised of syndiotactic-1,2-polybutadiene, sulfur, accelerator and retarder. The invention further relates to a compounded rubber comprised of a mixture of such package and sulfur curable rubber. The film may also contain additional selected rubbers.

Abstract: A process for preparing a bound antioxidant polymer concentrate is described which comprises grafting one or more acrylic or alkylacrylic esters or amides containing a hindered-amine group onto the polymer in the presence of a radical generator at a temperature of 100.degree. to 350.degree. C., the molar ratio of said radical generator to said ester or amide being from 0.001: to 1:1, the reaction being continued for a time such that the melt viscosity of the polymer which increases initially during the reaction has reduced to a level which permits the concentrate to be homogeneously blended subsequently into a unstabilized polymer.

Abstract: A high-hardness rubber composition which is obtained by vulcanizing an unvulcanized rubber composition comprisingan unvulcanized ethylene..alpha.-olefin rubber composition (A) comprising 100 parts by weight of an ethylene..alpha.-olefin copolymer rubber, 60-150 parts by weight of a reinforcing agent and 0-70 parts by weight of a softener;5-40 parts by weight of a solid diene rubber (B) based on 100 parts by weight of said ethylene..alpha.-olefin copolymer rubber; and4-15 parts by weight of sulfur (C) based on 100 parts by weight of said ethylene..alpha.-olefin copolymer rubber,wherein said unvulcanized rubber composition is obtained by adding said solid diene rubber (B) and said sulfur (C) to said unvulcanized ethylene..alpha.-olefin rubber composition (A).

Abstract: Disclosed is a water-borne coating composition having improved pigment dispersibility. The water-borne coating composition comprises a pigment and a water dispersible or water soluble resin, wherein said pigment is preliminary ground with crosslinked resin particles having ionic groups on the surface.

Abstract: A method and apparatus for producing rubber mixtures in two stages, namely a master-batching stage and a final mixing stage, with the maximum temperature during final mixing being less than the maximum temperature during master batching. In order to reduce the overall mixing time, and in order to simplify the mixing apparatus, the material that is to be mixed is passed successively through a master batcher and then a final mixer. The material that is to be mixed is transferred or conveyed from the master batcher to the final mixer via the force of gravity without intermediate storage thereof. After the master batching, the material that is to be mixed is cooled in the final mixer. During cooling and final mixing of a first charge in the final mixer, master batching of a subsequent charge is already effected in the master batcher. The master batcher and the final mixer are expediently combined in such a way that the master batcher is a ram kneader, and the final mixer is a ram-less kneader.

Abstract: An ink is produced without flushing by forming both an emulsion of a selected organic liquid and water and an aqueous suspension of a pigment. The emulsion and the pigment are then mixed together, whereby the pigment is phase-transferred from the aqueous phase to the non-aqueous phase, and whereby a mixture is formed. The mixture is concentrated (e.g. via filtration) and added to an ink mixing tank where the remaining water is removed by evaporation and wherein the remaining ingredients are added so that the ink is produced.

Abstract: A method for the manufacture of a physical blend of pigment and a polymer powder whereby polymer powder having a particle size in the range of 250 to 750 microns is fed to a high intensity mixer and then powdered pigment is fed to the mixer at a rate of not more than 0.5 parts of pigment per 100 parts of polymer per minute. The pigment has a particle size that is substantially smaller than that of the polymer powder. The resultant admixture is mixed for a further period of time and then discharged from the mixer. The method is particularly applicable to powdered polyethylene intended for use in a rotational moulding process e.g. for the manufacture of containers and other hollow articles.

Abstract: A method for providing polymer-densified fillers consisting essentially of mixing 100 parts of a silicone polymer with 50 to 500 parts of reinforcing filler or 400 to 5000 parts of extending filler and mixing such blend for an amount of time effective for providing a dense, free-flowing particulate mixture.

Abstract: A polyolefin resin composition is produced by pulverizing and surface-treating an inorganic filler together with a surface treatment agent in a dry or semi-dry pulverizing means, mixing the thus-treated inorganic filler with a specified amount of a polyolefin resin and granulating the resultant mixture, and thereafter mixing the thus-obtained granular mixture with an additional granular or pelletized polyolefin resin at a specified ratio.

Abstract: An asphaltic composition having improved tensile properties is disclosed. Also disclosed is a method for producing said composition which comprises:A. contacting an asphalt with a mineral acid;B. contacting the acid modified asphalt thus formed with an oxygen-containing gas;C. adding a thermoplastic elastomer to the acid/oxygen modified asphalt thus formed; andD. adding an unsaturated functional monomer to the polymer modified asphalt.In a preferred embodiment, the asphalt is contacted with an oxygen-containing gas prior to and during contact with the mineral acid.

Abstract: The method of this invention produces a high strength, one-part fluorosilicone sealant which is stable in the absence of moisture and contains an in situ treated reinforcing silica filler. The fluorosilicone sealant is produced by a process which in situ treats the reinforcing filler with a di(trifluoropropyl)tetramethyldisilazane in the presence of a portion of the fluorosilicone polymer. The remainder of the polymer is then added and the reinforced polymer is admixed with a moisture activated curing system to give a sealant which cures upon exposure to moisture to give an elastomer. The sealant is easily extrudable from a storage container. The cured elastomer has improved tensile strength, tear strength, and elongation values. The cured elastomer, being a fluorosilicone, is resistant to non-polar organic hydrocarbon fluids such as aircraft jet engine fuels and gasoline.

Abstract: The invention relates to polyester molding compositions, comprising substantially the polyester, preferably polyethylene terephthalate, a nucleating agent, a special imide compound as a further crystallization accelerator and, if appropriate, the conventional reinforcing agents and additives. The special crystallization accelerator according to the invention is virtually unreactive with the polyester and, in particular, is considerably more resistant to migration than relevant crystallization accelerators according to the state of the art. The invention also relates to a process for the preparation of these polyester molding compositions.

Abstract: A family of novel and unique synthetic alkali metal alumino-silicates (SAMS) are produced by the hydrothermal reaction between kaolin clay and alkali metal silicates. The integrated composition of the SAMS products is a unique entity having an overall composition ofxM.sub.2 O:Al.sub.2 O.sub.3 :ySiO.sub.2 :zH.sub.2 Owhere x is the number of moles of alkali metal oxide and is an integer from 0.01 to 2.0, M is an alkali metal, y is the number of moles of SiO.sub.2 in the unique SAMS composition, and z is the number of moles of bound water and is an integer ranging from 1.0 to 5.0. The composition essentially comprises altered kaolin clay platelets with an integral rim or protuberance of essentially amorphous alkali metal silicate-kaolin reaction product. The unique SAMS compositions are structured materials in which the structure can be controlled, and are therefore useful as functional fillers, as TiO.sub.

Abstract: A process for producing a titanium dioxide containing polyester resin composition from which a white film useful as a reflective photographic support can be prepared is disclosed.Said process is performed by first supplying a polyester resin and titanium dioxide into a continuous kneading extruder, kneading them in molten state, and supplying an additional charge of the polyester resin to give a desired concentration of the titanium dioxide, wherein the first supplied polyester resin has an intrinsic viscosity of at least 0.40, said titanium dioxide having an average particle size of 0.1-0.5 .mu.m and a water content of no more than 0.5% and having been surface-treated with an aluminum compound and/or a silicon compound, and the concentration of titanium dioxide being in the range of 20-70 wt % when kneaded with the polyester resin in molten state.

Abstract: Improved polymer additive concentrate compositions used in nylon film layers. The improved concentrate comprises a carrier of a nylon polymer composition and the additive material. Preferred nylons includes nylon 6; nylon 6,66; nylon 6,6; and combinations thereof. Preferred additives are antiblock agents and slip agents. The film layers may comprise a single layer nylon film, or may be part of a multiple layer composition. The films are susceptible to being used in making packaging.

Abstract: An improved stabilizer concentrate for use in stabilizing polymeric blend compositions which comprise a thermally sensitive interpolymer. The stabilizer concentrate comprises a carrier resin, and a stabilizing agent capable of stabilizing a thermally sensitive interpolymer. The improvement comprises employing a carrier resin having a viscosity such that the stabilizer concentrate has a viscosity of less than 60 percent of the viscosity of the polymeric blend composition.

Abstract: This invention relates to carbon-containing moulded bodies based on thermoplastic polycarbonates and thermoplastic polyalkylene terephtalates with an addition of carbon black and graphite and to a process for the production of these moulded bodies.

Abstract: A method of producing a mixture that contains rubber or rubber-like material, and carbon black. The method includes the steps of adding to the rubber or rubber-like material a portion only of the intended total quantity of carbon black, thereupon preheating the above in a high-frequency alternating field, and subsequently adding in the remainder of the intended total quantity of carbon black. Expediently, approximately up to a maximum of one-third of the intended total quantity of carbon black is added to the rubber prior to the preheating step.