Abstract: Improvement of stability of dynamic performance of pneumatic tire tread composition, by adding at least one of some esters such as phosphoric acid ester, fatty acid ester in a definite ratio to the known composition comprising styrene-rich SBR added with a processing oil and carbon black respectively in higher ratio for improving dynamic performance.

Abstract: An antistatic agent for polymers, particularly polyurethanes is disclosed comprising an ionizable metal salt and an enhancer comprising a phosphate ester.

Abstract: An acrylic resin composition having excellent permanent antistatic properties, which comprises a copolymer of an acrylic monomer comprising predominantly methyl methacrylate with a specific sulfonate and optionally a specific alkylene oxide and/or acidic phosphate, and a method for the production thereof. The acrylic resin composition of the invention shows excellent antistatic properties without losing the excellent properties of methacrylic resin, such as excellent transparency, mechanical properties, heat resistance, etc., and is useful for various utilities, such as preparation of advertising displays, lighting fixtures, covers, nameplates, and various decorations.

Abstract: According to the invention, a resin composition having an electromagnetic wave shielding effect is provided. The resin composition comprises 35 to 90 wt % of an ABS resin or a mixture of the ABS resin and an AS resin, 1 to 25 wt % of a plasticizer and 5 to 40 wt % of carbon fibers. The carbon fibers are uniformly dispersed in the resin ingredient without being broken or cut at the step of mixing and dispersing the resin components, thus exhibiting improved electromagnetic wave shielding effect.

Abstract: According to the invention, a resin composition having an electromagnetic wave shielding effect is provided. The resin composition comprises 35 to 90 wt % of an ABS resin or a mixture of the ABS resin and an AS resin, 1 to 25 wt % of a plasticizer and 5 to 40 wt % of carbon fibers. The carbon fibers are uniformly dispersed in the resin ingredient without being broken or cut at the step of mixing and dispersing the resin components, thus exhibiting improved electromagnetic wave shielding effect.

Abstract: Resinous pigment concentrates comprising at least one pigment and a dispersing additive of a naphthenic extender oil and/or a phosphate ester blended with a major portion of a resinous polymer containing a significant proportion of at least one polymerized conjugated diene monomer, when used for coloring resinous polymers as described, are effective in reducing such defects in finished articles as gels and surface blemishes.

Abstract: A fire retardant composition for rigid polyurethanes or polyisocyanurates comprises dimethyl methyl phosphonate, diethyl ethyl phosphonate or a mixture thereof and a triaryl phosphate, a trialkyl phosphate or an alkyl/aryl phosphate in a ratio by weight of 5:95 to 95:5. The composition may also contain a halogen-containing flame retardant compound.

Abstract: Flame retardant polyphenylene ether resin compositions are described in which the flame retardant agent is a mixture (by weight) of the following:(a) about 1.5% to about 3.0% of: ##STR1## (b) about 15.0% to about 20.0% of: ##STR2## (c) about 23.0% to about 28.0% of: ##STR3## (d) about 47.0% to about 56.0% of: ##STR4## wherein R.sub.1 and R.sub.2 are each selected from the class consisting of hydrogen, methyl and ethyl, it being understood that when one of R.sub.1 and R.sub.2 is hydrogen the other is ethyl and when one of R.sub.1 and R.sub.2 is methyl the other is methyl, the resulting two methyl groups being in the 2,4-, 2,5-, 2,3-, 3,4- and 3,5-positions, it being further understood that the ethyl groups are almost entirely in the meta (m) and para (p) positions.

Abstract: A polyphenylene ether resin composition comprising(A) a polyphenylene ether resin,(B) a polystyrene resin,(C) an acrylonitrile/conjugated diene elastomeric copolymer,(D) a graft copolymer obtained by reacting butyl rubber and an unsaturated polyolefin in a bifunctional phenol as a reaction medium, and(E) an aromatic phosphate.

Abstract: Thermoplastic compositions of a polyphenylene ether resin and a precompounded blend of a poly(arylolefin-olefin), an organopolysiloxane and a linking agent are described. The precompounding of the organopolysiloxane with a poly(arylolefin-olefin) enables the compatible incorporation of larger amounts of organopolysiloxane than otherwise possible, and the resulting novel composition provides various desirable properties.

Abstract: The invention relates to a polymer composition based on a polyphenylene ether which is suitable for wire insulation extrusion. The polymer composition comprises a polyphenylene ether, optionally a polystyrene, a hydrogenated block copolymer, an aromatic phosphate compound, a mineral oil and optionally typical additives. The invention also relates to an electrically conductive wire comprising an insulation built up from the above-mentioned polymer composition and provided around the electrically conductive wire by wire insulation extrusion.

Abstract: A soft vinyl chloride resin composition having a light weight and a superior abrasion resistance and lusterless surface is provided, which composition is obtained by blending 100 parts by weight of a vinyl chloride copolymer consisting of 99.0 to 99.95% by weight of vinyl chloride and 1.0 to 0.05% by weight of a polyethylene glycol diacrylate or a polyethylene glycol dimethacrylate both having 4 to 50 polymerization units of ethylene glycol, mainly with (a) 5 to 100 parts by weight of a filler having a specific gravity of 0.7 or less and a compressive strength of 70 Kg/cm.sup.2 or higher and (b) 30 to 150 parts by weight of a plasticizer.

Abstract: Flame retardant admixtures of triaryl phosphates and a resin as well as a process for preparation are described. The triaryl phosphate mixture includes at least one phosphate where 1 or 2 of the 3 aryl groups are mesityl and the remaining group or groups are independently selected from among phenyl and xylyl. The triaryl phosphate mixture provides better flame retardancy per unit weight of phosphorous than, for instance, triphenyl phosphate alone or trimesityl phosphate alone.

Abstract: There are provided plasticized thermoplastic compositions useful for molding which comprise a polyphenylene ether resin, a plasticizer, a mineral reinforcing agent, e.g., aluminum silicate, titanium dioxide, zinc oxide, antimony oxide, and the like, and optionally, an impact modifier. The compositions possess improved stiffness properties with unexpectedly significant retention of ductility in comparison with corresponding compositions which do not contain the mineral reinforcing agent.

Abstract: Polyethylene terephthalate molding compositions are provided which comprise a polyethylene terephthalate having an inherent viscosity of at least 0.4, a plasticizer, a lubricating polymer, a nucleating agent, a reinforcing agent or mixture of reinforcing agent and filler, and a molecular weight reducing agent for the polyethylene terephthalate. The molding compositions can be injection molded utilizing mold temperatures below 100.degree. C. (e.g, 60.degree.-90.degree. C.). The molded compositions exhibit an excellent balance of properties such as tensile strength, flex modulus, heat distortion temperature and impact strength.

Abstract: The present invention provides a non-foamed flame-retardant article of polymeric composition comprising at least 20% by weight of a monomer mixture comprising 0-0.1% by weight o-methylstyrene 0-15% by weight m-methylstyrene and at least 85% by weight p-methylstyrene; 0-80% by weight of a different ethylenic unsaturated monomer; and a sufficient amount of flame-retardants wherein the amount of flame-retardants is substantially less than would be needed had the p-methylstyrene been replaced with styrene analogs. The flame retardancy is achieved by the addition of organophosphorus or halogenated organophosphorus flame retardants. High impact resistance is achieved by the incorporation of a rubbery polymer into the polymeric composition.

Abstract: A method for determining the concentration of additives in a compounding process by measuring the capacitance and dissipation factor (tan.delta.) of the mixture and converting such values to the concentrations of the additives. This method may also be utilized to determine the concentration of the polymers in the mixture. This method is preferably applied to a compounding process of blending polyphenylene oxide and polystyrene thermoplastic resins and is preferably applied to a continuous compounding process of these resins to determine therein the concentration of an aryl phosphate ester flame retardant.

Abstract: A method for determining the concentration of ingredients and other process variables in a polymerization process by measuring the capacitance and dissipation factor of the mixture and determining its dielectric constant at various stages of the process. By the use of an automatic capacitance bridge and a computer, the process variables can be determined and controlled in a matter of seconds.

Abstract: A flame retardant polyphenylene ether-styrene resin composition having a UL-94 rating of V-1 or better, a heat distortion temperature greater than 92.degree. C. and a melt viscosity at 260.degree. C. of less than 200 pascal second is obtained by incorporating with said polyphenylene ether-styrene resin composition from about 4 to about 7 parts per hundred of a triaryl phosphate ester and from about 0.5 to about 3 parts per hundred of a 3-hydroxyalkyl phosphine oxide having the formula: ##STR1## wherein R.sub.1 may be the same or a different radical selected from the group consisting of hydrogen and the methyl radicals, R.sub.2 is a radical of 4 to 8 carbon atoms and n is either zero or one.

Abstract: Polyethylene terephthalate molding compositions are provided which comprise a polyethylene terephthalate having an inherent viscosity of at least 0.4, a plasticizer, a lubricating polymer, a nucleating agent, a reinforcing agent or mixture of reinforcing agent and filler, and a molecular weight reducing agent for the polyethylene terephthalate. The molding compositions can be injection molded utilizing mold temperatures below 100.degree. C. (e.g., 60.degree.-90.degree. C.). The molded compositions exhibit an excellent balance of properties such as tensile strength, flex modulus, heat distortion temperature and impact strength.

Abstract: Self-extinguishing molding materials, comprising (A) a polymer of a vinyl-aromatic compound, especially a styrene polymer, which has been made impact-resistant (B) a polyphenylene ether and (C) a flameproofing additive, with or without (D) conventional additives, wherein one part of the soft component of the impact-resistant polymer of the vinyl-aromatic compound has a mean particle size of .ltoreq.1.5 .mu.m and the other part has a mean particle size of .ltoreq.3 .mu.m. Such molding materials not only have good self-extinguishing properties but also give moldings having a particularly uniform matt surface.

Abstract: Thermally coalescible acrylic resin dispersions comprising particles of single-phase, surfactant-free, random acrylic polymers or copolymers, containing at least 80% by weight of acrylic units, dispersed in a surfactant-free medium that comprises a compatible liquid plasticizer that is nonvolatile at room temperature and is not a monomer of any of the polymeric components. Incorporation of a photopolymerizable, ethylenically unsaturated compound provides photosensitive dispersions useful for making relief and planographic printing plates, photoresists, and the like.

Abstract: Polyphenylene ether resins and compositions of such resins in admixture with certain specific phosphite thermal oxidative stabilizers are described. These blends can be used with or without impact modifiers. As an additional benefit, the resins and compositions possess good melt flow properties which facilitates processing during molding.

Abstract: The present invention relates to low-halogen-content, thermoplastically-processible polyurethane elastomers (TPU), to which are added antimony trioxide, chlorinated and/or brominated aromatic compounds having a specified halogen content, aluminum hydroxide having a specified particle size, phosphoric acid tris-ester, and, optionally, quaternary tetra-alkyl ammonium salts. These additives impart an unexpectedly favorable combination of electrical surface properties, flameproof behavior and abrasion resistance.

Abstract: Normally intractable polymers of the structure: ##STR1## wherein X is O or NH, provided at least one X is O, such as poly(parabanic acids) are made extrudable by composition with greater than 15 to 60 weight percent of phosphate ester of the structure (R.sub.1 --O).sub.3 P=O wherein R.sub.1 is: ##STR2## and each R.sub.2 and R.sub.3 is independently selected from H or --CH.sub.3 or (b) an alkyl radical having 1 to 8 carbon atoms.

Abstract: The invention relates to plastics moulding compounds which have been flame-proofed with organic chlorine- or bromine-containing compounds, said moulding compounds containing at least one aerosol selected from the group comprising the highly dispersed silicates, highly dispersed alumina, and highly dispersed titanium dioxide, and, optionally, a dibasic or tribasic oxyacid of phosphorus or an ester thereof. These moulding compounds have a reduced corrosive action on contact metals.

Abstract: This invention provides novel thermoplastic molding compositions of a polyphenylene ether resin, an EPR rubber, a triaryl phosphate or an EPDM modified alkenyl aromatic resin or a combination of a triaryl phosphite and an EPDM modified alkenyl aromatic resin.

Abstract: A bumper having excellent rigidity, resistance to thermal deformation and to mechanical impact at a low temperature and superior lacquer-bonding property is made from a propylene polymer composition comprising:(A) 55 to 65% by weight of at least one crystalline ethylene-propylene block copolymer in which the content of the polymerized ethylene is in the range of from 5 to 10% by weight, in which the polypropylene component has a fraction thereof insoluble in boiling n-heptane, in an amount of 97% or more, in which a fraction thereof soluble in p-xylene at room temperature, has an intrinsic viscosity of from 3 to 4 determined in decahydronaphthalene at a temperature of 135.degree. C. and which has a melt flow index of from 2 to 10;(B) 30 to 35% by weight of at least one amorphous ethylene-propylene copolymer having an intrinsic viscosity of from 2.0 to 3.5 determined in decahydronaphthalene at a temperature of 135.degree. C., and a Mooney viscosity ML.sub.

Abstract: Polyphenylene oxide blended with SAN or ABS polymers containing from 2 to 8% by weight of acrylonitrile have highly advantageous combination of strength and distortion temperature.

Abstract: A method for making and the composition for an initially erasable ink for a ball point writing instrument which ink is characterized by its initial erasability by ordinary pencil erasers when applied by a ball point writing instrument to an absorbent paper-like writing surface and which thereafter develops permanence.

Abstract: Homogeneous blends of at least two non-crosslinked ethylene copolymers having different polar comonomer contents are mildly crosslinked to reduce their melt index. The crosslinked blend can be mixed with tackifier, plasticizer, filler and antioxidant to yield hot melt pressure sensitive adhesive compositions. In the alternative, at least one of the two ethylene copolymers can be crosslinked prior to blending in the hot melt pressure sensitive adhesive composition.

Abstract: There are provided drip-retardant, plasticized thermoplastic compositions which comprise, in admixture, a polyphenylene ether resin, a plasticizer in an amount at least sufficient to provide a plasticized composition after molding, and a microfibrillar poly(tetrafluoroethylene)resin in an amount at least sufficient to render the thermoplastic composition non-dripping when molten. The present compositions meet even more stringent standards than the UL-94 flame test.

Abstract: Polyolefin film is produced with enhanced properties by the addition thereto of a placticizing oil, a slip promoting wax and an inert filler for imparting anti-block characteristics to the film. The three components have a synergistic effect in that the combination enhances the desirable attributes of each additive while minimizing the deleterious effects which each additive alone would have on a polyolefin film.