Abstract: Elastomers are plasticized with a polymerizable monomer, in homogeneous admixture therewith, by adding the monomer to a latex of the elastomer, free of polymerization initiator, followed by coagulation of the monomer and polymer solids. The coagulated solids recovered from the latex may be compounded with a polymerization initiator for the monomer and a vulcanizing agent for the polymer and, optionally, an inorganic filler, and shaped into the desired product form. Polymerization of the polymer and vulcanization of the elastomeric polymer are initiated after shaping.

Abstract: Flexible thermoplastic vinyl chloride polymers are prepared by graft or over copolymerizing said polymers with a mixture of certain acrylates and nitriles or by blending said vinyl chloride polymer with a terpolymer of certain acrylates and nitriles.

Abstract: Acid-curable furfuryl alcohol prepolymer binders have improved properties when admixed with a dibasic acid di-ester of the compositionR.sup.1 O.sub.2 C(CH.sub.2).sub.n CO.sub.2 R.sup.2when n is from 1 to 8, R.sup.1 is furfuryl, and R.sup.2 is furfuryl or methyl. The diesters are preferably added in the amount of 5-35% by weight of total composition. These compositions are particularly useful in the preparation of sand cores and molds for foundry use which have improved strength and hardness. These furfuryl esters are also acid-curable and can be used alone as resin binders.

Abstract: Thermoplastic core-shell compositions having a rigid core, a rubbery acrylic shell and transition layer intermediate between the core and shell layers and formed of the core and shell monomer components have excellent elastomeric properties. Although the rigid and rubbery components include interreactive functional monomers, the resulting elastomers remain thermally processable in extrusion and injection molding equipment.

Abstract: A carboxylate component is introduced into an alkali metal initiated polymer by means of a sequence in which an epoxy compound is reacted with the polymer followed directly by contact with a cyclic acid anhydride to produce a polymer composition having a carboxylate salt group. The resulting composition can then be hydrolyzed to produce carboxy-containing polymer which is useful in applications such as sheet molding compounds.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Adsorbents are provided for the affinity-specific separation of macromolecular materials, particularly biopolymers, the adsorbents comprising a polymeric carrier on to which an affine residue for the macromolecular material is covalently bound, either directly or via polymeric spacer. Preferred affine residue is comprised of a specific complex formers which are base-specific and/or structure specific for the macromolecular material. The invention also provides novel complex formers comprising a certain dyestuff residues and processes for their preparation.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Photocrosslinkable polymers which have a mean molecular weight of not less than 5,000 and contain, in side chains, thioxanthone groupings of the formula ##STR1## and, in side chains, imidyl groupings of the formula ##STR2## in which X, Y, Z, n, G.sub.1 and G.sub.2 are as defined in the patent claim, are suitable for the production of highly light-sensitive image materials, for the production of printing plates for the offset printing process and in particular as so-called photoresists for the production of printed circuits. The thioxanthone groupings (I) act as sensitizers for the photocrosslinkable groups of the polymer, so that it is not necessary to add further sensitizers.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Lactones derived from gamma-hydroxy acids are employed as coupling agents for polymers derived from alkali metal-initiated polymerizations. These coupling agents provide effective coupling without formation of undesirable by-products.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: A provisional crown-and-bridge resin comprising a liquid resin component and a powder component. The liquid resin component contains tetrahydrofurfuryl methacrylate as a major ingredient and is free from methyl methacrylate. It also contains an anti-oxidant and an accelerator. The powder component contains poly (ethyl methacrylate) as a major ingredient and a curing agent for the resin component. The powder is mixed with the resin shortly before application at a ratio of about two to about five parts of powder to one part of liquid resin by weight, to give a suitably flowing mixture. The resin component may also contain ethyl methacrylate as a major ingredient and may contain ethoxylated bisphenol A dimethacrylate as a major ingredient. The powder may include a substantial proportion of amorphous silica and preferably incorporates a substantial amount of X-ray opaque barium glass.

Abstract: Graft copolymers consisting ofA from 10 to 80% by weight of an ethylene/vinyl ester copolymer containing from 1 to 75% by weight of vinyl ester; andB from 90 to 20% by weight of a grafted monomer mixture essentially consisting ofI. from 5 to 50% by weight of acrylonitrile and/or methacrylonitrile;II. from 95 to 50% by weight of one or more aromatic monovinyl compounds; andIII. small quantities of copolymerized allyl compound;the sum of components A and B and of components I to III respectively amounting to 100% by weight.

Abstract: An injection-moldable, peroxide crosslinkable elastomeric composition comprises a mixture of a crystalline interpolymer comprising ethylene and propylene; a low density polyethylene; one or more multifunctional vinylic or allylic monomers; a medium to high structure form of carbon; and an organic peroxide.The composition is particularly useful for the fabrication of injection molded structures which are required to flex on impact and return to their original shape when the distorting force is released. Typical structures are automotive fender extensions, grilles and front and rear fascia.

Abstract: Structurally colored polymers, formed by polymerizing monomers of the acrylic type, containing 0.5% to 20% by weight of dyestuff in copolymerized form or grafted form which have a number-average molecular weight between 1000 and 12,880 g. and contain m hydroxy functions and n groups of the formula: ##STR1## in which X.sub.1 is hydrogen, chlorine, bromine or methyl;and R.sub.1 and R.sub.2 are the same or different and represent hydrogen, chlorine, methyl, phenyl, substituted phenyl or carboxyl;m being a number from 0 to 49and n being a number from 2 to 70such that the sum m+n is from 7 to 70and the ratio m/n is from 0 to 2.4.These polymers are used in particular for the formation of colored coating on various supports and surfaces.

Abstract: A powder coating composition comprising(A) 70 to 97% by weight of an ethylene resin mixture composed of(A-1) an ethylene copolymer having a melt index of 1 to 50 and containing at least one comonomer selected from the group consisting of alpha-olefins other than ethylene, dienes, vinyl acetate, vinyl alcohol, acrylic acid, functional derivatives of acrylic acid, methacrylic acid and functional derivatives of methacrylic acid, and(A-2) a graft copolymer of polyethylene having grafted thereto an unsaturated carboxylic component, the amount of said unsaturated carboxylic component being 0.001 to 2% based on the weight of the ethylene resin mixture (A), and(B) 3 to 30% by weight of a hydrocarbon wax having a number average molecular weight of about 400 to about 3,000 and a density of not less than 0.9 g/cm.sup.3, said wax having an acid value of up to about 5 when it is a modified wax.

Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a watersoluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.

Abstract: A rapid curing polybutadiene resin system dielectric coating composition suitable for coating electrical components such as thin film resistors is disclosed. This composition cures very rapidly and greatly improves adhesion to the coated article.

Abstract: Branched block copolymers of from 60 to 95 percent by weight of a monovinyl-aromatic compound and from 40 to 5 percent by weight of a conjugated diene.The branched block copolymers have a structure of the general formula(A.sup.1 --A.sup.2 --B.fwdarw.A.sup.3).sub.n --X--(A.sup.3 .rarw.B--A.sup.2).sub.mwhere the A's are non-elastomeric polymer segments based on the monovinyl-aromatic compound, the B's are elastomeric polymer segments based on the conjugated diene, X is the radical of an at least trifunctional coupling agent and n and m are numbers.The branched block copolymers may be used for the manufacture of highly transparent impact-resistant shaped articles, especially packaging materials.