Abstract: Pigment dispersions contain, as dispersing agent novel water soluble polymers containing acid groups, preferably polyacrylic acid or copolymers of polyacrylic acid with AMPS, having polydispersity below 1.5 and molecular weight in the range about 1,000 to about 5,000.

Abstract: The ductile impact strength and tensile elongation of flame retardant compositions of a polyphenylene ether resin and a poly(alkenyl aromatic) are upgraded by the addition of only small amounts, typically from about 0.1 to about 10 parts by weight, of high molecular weight polyfunctional esters or low molecular weight saturated polyesters.

Abstract: An improved vapor phase process for chlorination of polyethylene in a fluidized bed is accomplished by chlorinating a mixture of powdered polyethylene and finely divided inorganic compounds having a dielectric constant of greater than about 40 and specific conductivity of greater than 10.sup.-13 and less than 10.sup.-1 (.OMEGA..sup.-1 cm.sup.-1) such as titanium dioxide, with chlorine, optionally under actinic light, at an initial temperature from about 20.degree.C. to about 70.degree. C. and raising the temperature of the reaction to at least about the crystalline melting point of the polyethylene and continuing the reaction until the polyethylene contains greater than 25 to 45 weight percent bound chlorine.

Abstract: A diaphragm for a loudspeaker is described, which essentially consists of a polyolefin resin such as propylene homopolymer or copolymer with an ethylenically unsaturated copolymerizable monomer or a 4-methylheptene-1 resin and short fibers of potassium titanate. The titanate fibers have an average fiber length of 10 to 30 microns and an average diameter of 0.1 to 0.5 micron.

Abstract: Disclosed is a polyamide film of low crystallinity suitable for use in the manufacture of sheet molding compound (SMC). The sheet is produced from a blend comprising a polyamide selected from the group consisting of polyepsiloncaprolactam, polyhexamethylene adipamide or mixtures thereof, and about 10 to 30 wt. %, based on the total weight of said blend, of a polyolefin compound, or copolymer thereof, such as ethylene-vinyl acetate copolymer. The film has a tear strength of at least about 400 grams in the longitudinal direction as measured by ASTM D-1004-66.

Abstract: A method of polymerizing hydroxyl-endblocked polydiorganosiloxane in the presence of filler, including acidic filler such as fumed silica, through the use of basic diorganosilanolates as catalysts is claimed. Preferred diorganosilanolates are tetra-n-butylphosphonium dimethylsilanolate and potassium dimethylsilanolate. The silicone polymer-filler mixture produced is useful in silicone greases and elastomers. Methods of combining the silicone polymer-filler mixture with various curing agents to yield curable compositions are claimed.

Abstract: Blends of low molecular weight hydroxy-terminated polyesters, based on diols, such as 2,2,4-trimethyl-1,3-pentane diol, and diacids or their esters, such as isophthalic acid, and methyl esters of short chain aliphatic diacids, are provided. The blends can be crosslinked with conventional crosslinking agents such as nitrogen resins or polyisocyanates. The formulated coatings have high solids content of relatively low viscosities and are useful on e.g. metallic substrates forming, upon curing, coatings having excellent tensile strength, hardness, and resistance to staining, weathering, and corrosive conditions.

Abstract: A powder blend of rigid polyvinyl chloride resin having higher packing densities than previously known is disclosed. The higher packing densities provide improved physical properties and production rates. There is also disclosed a process for the manufacture of a powder blend of suitable thermoplastic polymer resins having high packing densities for processing into articles. The process includes mixing and thermokinetically heating a batch of powder blend in a high intensity mixer having a plurality of blades attached to arms rotating about an axis with a blade tip speed of at least about 25 meters/second to a predetermined temperature below commencement of agglomeration, and cooling the batch in a high intensity mixer having a plurality of blades attached to arms rotating about an axis with a blade tip speed less than about 16 meters/second but sufficient to attain high packing densities, to a temperature at which the batch can be stored without agglomeration occuring.

Abstract: A reinforced, filled thermoplastic polymer composition, having increased strength and ductility, contains a reinforcement promoter having at least two reactive olefinic double bonds and a positive promoter index, based on the double bond resonance and polarity, and the promoter adsorptivity.

Abstract: A titanium dioxide pigment is provided for use in polymeric compositions comprising a pyrogenic titanium dioxide pigment which has been treated with a composition comprising an organophosphate/alkanolamine addition product.This invention provides for a novel method for treating a pyrogenic titanium dioxide pigment in order to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment a composition which comprises an organophosphate/alkanolamine addition product.

Abstract: A pigmented ink composition for use in jet printing formulated of an aqueous or water-alcohol solvent system, a highly water dispersible white pigment limited to a particle size of less than 5 microns, a water dispersible resinous binder, a basic compound for maintaining a pH within the range of 7.5 to 9.5, and a plasticizer, and which may include in addition a coalescent agent and organic dye components for imparting color to the pigment.

Abstract: There is provided a paintable room temperature curable polyorganosiloxane composition which is comprised of a silanol-terminated polydiorganosiloxane, an aminoxy functional organosilicon compound, an inorganic filler and a monohydric unsaturated alcohol containing a carbon-to-carbon triple bond and a hydroxyl group bonded with a primary or secondary carbon atom.

Abstract: A titanium dioxide pigment is provided for use in polymeric compositions comprising a pyrogenic titanium dioxide pigment which has been treated with an addition system comprising:(a) an organophosphate/alkanolamine addition product, and(b) a polyol.This invention provides for a novel method for treating a pyrogenic titanium dioxide pigment in order to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment an addition system which comprises:(a) an organophosphate/alkanolamine addition product, and(b) a polyol.

Abstract: A dispersion is provided for incorporation with a synthetic fiber-forming polymer. The dispersion comprises a polymer additive, such as titanium dioxide, and a glyceride which is non-resin forming when exposed to certain temperatures and pressures for specified time periods and which has an average molecular weight of between about 600 and 2400.

Abstract: Modified titanium oxide is prepared by polymerizing a mixture of vinyl chloride and a carboxylic monomer such as 10-undecenoic acid in the presence of titanium oxide. The thus obtained, modified titanium oxide is mixed with a vinyl chloride resin, typically, polyvinyl chloride to give a vinyl chloride resin composition having an improved weatherability and being substantially free of serious drawbacks accompanying the addition of conventional titanium oxide such as plating out during extrusion and decrease in extrusion throughput.

Abstract: Compositions comprising a polyphenylene ether resin, an impact modifier such as an A-B-A.sup.1 block copolymer, a plasticizer and particulate titanium dioxide in which the particles have a mean particle size no greater than 0.6 micron, provide unexpected retention of Gardner impact resistance.

Abstract: A high solids pigmented coating composition is prepared from a curing agent and an ester diol binder which is a mixture of(a) 20-80 mole % of a compound having the general formula: ##STR1## where R.sub.1 represents the group formed by abstraction of the two carboxyl groups from a cycloaliphatic and/or aromatic dicarboxylic acid having 8 to 20 carbon atoms and R.sub.2 and R.sub.3 may be the same or different and represent groups formed by abstraction of the two hydroxyl groups from a divalent alcohol having 2 to .[.12.]. .Iadd.6 .Iaddend.carbon atoms, and m is a number of 1 - 3, and(b) 80-20 mole % of a compound having the general formula: ##STR2## where R.sub.4 represents the group formed by abstraction of the two carboxyl groups from an aliphatic dicarboxylic acid having 2 to 12 carbon atoms, and R.sub.5 and R.sub.6 may be the same or different and represent groups formed by abstraction of the two hydroxyl groups from a divalent alcohol having 2 to .[.12.]. .Iadd.6 .Iaddend.