Abstract: The invention relates to an improved process for preparing very high ortho novolac resins, said process including reacting phenol and formaldehyde in the presence of a divalent electropositive metal oxide, hydroxide or salt and a strong acid or salts of said metals wherein the improvement comprises conducting said reaction under anhydrous conditions with particular divalent electropositive metal ion combinations.

Abstract: The polymeric polyblend comprises a matrix terpolymer of alkenyl aromatic, alkenyl nitrile and acrylate monomers blended with a grafted block copolymer rubber as dispersed rubber particles, said particles being grafted with and having occluded terpolymer of substantially the same composition of said matrix phase. The polyblend is a product of a mass polymerization process having superior toughness and transparency.

Abstract: This invention relates to an improved polymeric polyblend characterized by a blend of (A) a polymer of at least one monoalkenyl aromatic monomer having dispersed therein an amount sufficient to toughen said polyblend of a (B) diene rubber, said rubber being dispersed as crosslinked grafted rubber particles wherein said improvement comprises (C) said diene rubber particles having a rubber moiety structured in a novel morphological form comprising rubber fibers or rubber sheets and mixtures thereof.

Abstract: The polyblend comprises: (A) a graft copolymer having superstrate copolymers of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and a substrate of a diene rubber dispersed in a matrix phase (B) comprising a blend of about 45 to 75 percent by weight of a (I) copolymer of monovinylidene aromatic and ethylenically unsaturated nitrile monomers and about 25 to 55 percent by weight (II) a methylmethacrylate polymer.

Abstract: A process for continuously coagulating a polymeric latex and consolidating as a paste coagulum in an apparatus comprising a barrel containing first and second feed ports, a rotor having opposed rows of angled tab blades and opposed wiper blades, a feed and closure means and a discharge port in an end of said barrel opposed to said feed ports, the steps comprising, continuously feeding an aqueous latex and an organic solvent simultaneously with a coagulant to said apparatus, continuously mixing said feeds and coagulating said latex forming a coagulum, consolidating said coagulum as a solvent polymer phase having the aqueous phase dispersed therein, said coagulum taking the form of a paste.

Abstract: The invention relates to an improved phenol-aldehyde resole resin composition for battery separators and a fibrous battery separator impregnated with the composition. Said composition comprising a resole resin with particular soluble hydroxy organic salts that do not salt out and improve the oxidation resistance of the battery separators.

Abstract: The shuttering member of this invention comprises a foamed resin block rabbeted along at least two opposed longitudinal edges of the same major surface of the block and having internal strengthening rods across the width of the block. The invention also comprises a method of producing a foamed shuttering member having strengthening rods.

Abstract: The invention relates to a fertilizer rod composition comprising about 100 parts of a polyvinyl alcohol, about 0 to 20 parts of a plasticizer and about 10 to 350 parts of a fertilizer, a process for producing said rod and a product of said process.

Abstract: There is disclosed a process for preparing a latex comprising grafted rubber particles for ABS polyblends that is free of coagulum, the steps comprising, preparing said latex and passing it through a porous filter bed means comprising agglomerated particles of said latex, removing said coagulum and producing a filtered latex. The process also includes the steps of blending said latex with a matrix polymer latex to form a mixed latex and coagulating said mixed latex and recovering said grafted rubber particles and matrix polymer as an ABS polyblend.

Abstract: This invention relates to high efficiency stable aqueous emulsifiable resoles which contain low concentrations of free phenol and free aldehyde causing less pollution than prior art resoles. Said resoles are catalyzed with alkaline earth metal hydroxides and neutralized with oxalic acid or its acid salts providing colloidal inert insoluble oxalate salts dispersed in said resoles. Said resole and said salts being emulsifiable with protein type emulsifiers providing stable emulsions when water in excess of the water tolerance of the resole is added.

Abstract: This invention relates to stable water dilutable resoles. Said resoles are 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 by the presence of particular anionic type dispersing agents. A method for manufacture is disclosed.

Abstract: The present invention relates to an anti-migratory (as respects impregnated porous sheet members) phenol-formaldehyde resole resin in water emulsions. The emulsion is rendered anti-migratory (when impregnated into paper) through the addition thereto of an anti-migratory agent selected from the group consisting of polyelectrolytes, certain salts of inorganic acids, and combinations thereof. The composition is especially useful in the impregnation of filter paper.

Abstract: Apparatus for readily separating a low viscosity liquid from an immiscible high viscosity paste or semi-solid comprising a conduit projecting proximate to an upwardly inclined surface provided with means for gravity drainage of the low viscosity liquid. The apparatus is particularly adapted for separating water from a coagulated aqueous latex of polymerized elastomer.

Abstract: The invention relates to a binder composition comprising a low molecular weight resole resin in combination with boron compounds wherein said boron compounds are present in from about 1 to 30 parts per 100 parts by resole resin solids, said composition having a pH of about 2-6 and said resole having a viscosity of from about 5 to 5000 cps. Said binder provides laminates having superior electrical and flame retardant properties.

Abstract: There is disclosed a continuous method for agglomerating lactices of a polymer to provide large particles. An acid anhydride solution is continuously admixed with an aqueous latex of a polymer followed by passing the admixture through a conduit with laminar-flow wherein the passage-time through said conduit is sufficient to hydrolyze the acid anhydride and produce agglomeration of said particles providing an agglomerated admixture followed by continuously stabilizing said agglomerated admixture with an emulsifying material providing a stabilized agglomerated latex.

Abstract: The invention relates to a resin binder composition comprising, in combination, a resole resin and a metal salt curing accelerator providing a binder composition that has an improved cure rate in electrical grade laminates without adversely affecting electrical properties. The binder composition provides low viscosity for impregnation and accelerated curing rates for advancing the impregnated substrate prior to laminating and final curing.

Abstract: The invention relates to polystyrene polyblends reinforced with grafted rubbers having improved melt flow without loss of tensile strength or toughness by incorporating 1 to 5 weight percent of a polyethylene wax having a molecular weight of from about 500 to 2400 and a dispersion index of from about 1-5.

Abstract: High efficiency stable aqueous 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: The invention relates to high ortho phenolic resole resins and varnishes. The phenolic resole resins are produced by reacting under acidic conditions formaldehyde with a phenol in the presence of a divalent electropositive metal ion. The resulting novel resole is then dissolved in organic solvent. The solutions are useful as varnishes in the manufacture of impregnated sheets, laminates and other reinforced plastics.

Abstract: A system for controlling the per cent of polymer in a reactor in a process in which the reactor effluent, comprising a mixture of polymer, unreacted materials and, possibly, by-products, goes through a separator to remove from such effluent unreacted materials and by-products. The system is especially useful with variable fillage, horizontal continuous stirred tank reactors.