Abstract: This invention relates to resoles catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing inert insoluble oxalate salts dispersed in said resoles. Said salts are size controlled and stabilized in aqueous resole resin solution having about 40 to 95 percent resole resin by weight. A method for manufacture is disclosed.

Abstract: The present invention relates to a biaxially oriented polymeric sheet having attenuated blocking properties comprising, a polymer of polyvinylidene aromatic monomer and optionally 0.1-80% of an unsaturated ethylenically unsaturated nitrile having dispersed therein an amount, sufficient to attenuate the blocking, of a diene rubber grafted with said monomers and a method for attenuating the blocking properties of said sheet.

Abstract: An improved process for preparing ABS polyblends, the steps comprising, polymerizing a polymerizable mixture of a monomer formulation and a diene rubber forming a grafted copolymer and a matrix interpolymer, the improvement comprising, polymerizing said monomer formulation to at least about 90% conversion, charging a third monomer and further polymerizing said monomer formulation in the presence of said third monomer to convert essentially all of said monomer formulation to interpolymer followed by recovering said polyblend having a low residual monomer content.

Abstract: There is disclosed an apparatus for the continuous agglomeration of aqueous latices to provide large particles comprising a mixing zone for forming an admixture of an agglomerating solution and a latex having mixing means and a perforated member as one wall section providing a flowthrough port for the admixture inducing laminar-flow in the admixture, an annular conduit to carry the admixture during agglomeration, a low-shear zone to carry and stabilize the agglomerated admixture and a withdrawal means having at least one diameter reduction to flow-mix the stabilized agglomerated admixture during withdrawal.

Abstract: This invention relates to an improved process for producing polyblends wherein said process has unexpectedly high rates of polymerization wherein a polymerizable mixture of a monovinylidene aromatic monomer and a diene rubber are partially polymerized en masse through phase inversion with the partially polymerized mixture being suspended in an inert liquid and the polymerization essentially completed; the improvement comprising utilizing a particular catalyst system, in combination with, a saturated aliphatic acid containing 12 to 20 carbon atoms and a compound selected from the group consisting of hydrated salts and water in the mass and suspension polymerization steps of the process. Said catalyst system having a half life of less than one hour at 130.degree. C., and a 10 hour half life at a temperature of 95.degree. to 115.degree. C.

Abstract: Polyblends of a vinyl chloride polymer having good low temperature crack propagation resistance, overall toughness and high resiliency comprising a polyvinyl chloride polymer and a two stage core grafted composite copolymer having a particular butadiene-styrene rubbery substrate. The composite graft copolymer is blended with a matrix of a polyvinyl halide resin and modified with a plasticizer, stabilizer and lubricant system to provide the desired tough rubbery polyblends for molding.

Abstract: The invention relates to an improved falling strand devolatilization apparatus. Said apparatus includes in combination a flash chamber for devolatilizing an input material fed as heated falling strands from the tubes of a shell and tube heat exchanger mounted in gastight relationship to said flash chamber. Said heat exchanger tubes are fed by a first pump through a headerbonnet with volatiles being removed from said flash chamber by a second pump adapted to evacuate said chamber.

Abstract: Ductile composite of a cold-rolled rubber reinforced resin sheet and a normally embrittling layer. The rubber reinforced resin in sheet form is cold rolled to reduce its thickness to between 95 and 40 percent of the original thickness. The cold rolled sheet may then be shaped by deep drawing. A protective or decorative layer which would normally impair the impact strength and toughness of unrolled resin is applied to the cold rolled sheet to yield a tough, impact resistant composite.

Abstract: A molded unitary shoe sole and heel consisting of a molding having the size and shape of a shoe sole and heel, said molding being comprised of a fused admixture of a polyvinyl chloride polymer and a two stage core grafted composite copolymer having a particular butadiene-styrene rubbery substrate. The composite graft copolymer is blended with a matrix of a polyvinyl halide resin and modified with a plasticizer, stabilizer and lubricant system to provide the desired tough rubbery unitary shoe sole-heel molding.

Abstract: A process for making ABS and related resins which involves grafting an alkadiene elastomer with styrene-type and/or acrylonitrile-type monomers by emulsion polymerization to produce a grafted rubber latex, mixing with such grafted latex a mixture of at least one of the same monoethylenically unsaturated monomers and at least one saturated styreneacrylonitrile copolymer solvent in an amount of at least 5 percent by weight of such saturated solvent based upon the total weight of monomers and solvent, coagulating the grafted rubber particles from the latex, separating water from said mixture and subjecting the resulting dispersion of grafter rubber in said solvent and monomer mixture to continuous mass polymerization.

Abstract: High efficiency stable aqueous emulsifiable resoles which contain low concentration of free phenol and free formaldehyde and cause substantially less pollution of the atmosphere than prior art resins. The resoles are prepared by a two-stage reaction which controls the molecular weight, water tolerance and the ratio of methylolated 2,2'-, 2,4'- and 4,4'-dihydroxydiphenylmethanes. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl) methane.

Abstract: Phenolic resin antipunk systems for thermal insulation, characterized by stability and a low level of volatile pollutants. The aqueous resin systems contain a resole component and an antipunk component. They are prepared by a three-step reaction which controls the degree of reaction, the molecular weight and the water tolerance of the resole component. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl) methane.

Abstract: Novel stable-in-use aminoplast resin binder solutions comprising aqueous solutions of predominantly a urea-formaldehyde resin having a formaldehyde to urea ratio of less than 2.0, from about 40 to 56% by weight dissolved ammonium polyphosphate reacted with 5 to 12.5 percent by weight formaldehyde and not more than 30% by weight water. Preferred aminoplast resin binder solutions also contain a methylolated melamine-formaldehyde resin. A novel process for the production of the stable aminoplast resin binder solutions containing high percentages of ammonium polyphosphates and suitable for production of fire-retardant particle board is disclosed.

Abstract: This invention relates to a continuous process for the production of ABS type polyblends comprising the polymeriztion of a monomer composition comprising monoalkenyl aromatic and alkenyl nitrile monomers in a single reaction zone forming a matrix copolymer dissolved in said monomers as a liquid phase; removing said liquid phase from said reaction zone and dispersing a first and second grafted diene rubber in said liquid phase followed by separating said matrix copolymer and said grafted diene rubbers from said liquid phase forming an ABS polyblend having a bimodal rubber particle size distribution and a matrix copolymer having a uniform monomer composition and molecular weight.