Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with linear organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.

Abstract: Polymer particles composed of particles of a polymer (I) consisting of 96 to 100% by weight of at least one ethylenically unsaturated monomer and 4 to 0% by weight of at least one .alpha.,.beta.-ethylenically unsaturated carboxylic acid, and a (co-)polymer (II) comprising 100 to 10% by weight of a conjugated diolefin which is localized on the surface layer of the particles of the polymer (I) at a (I)/(II) weight ratio of 100/5-100/90. The localized polymer part of the polymer particles is very active, and the polymer particles are easy to modify with a monomer having any functional group, and hence are elemental materials having a high function and being utilizable for various purposes.

Abstract: The sinterable polyvinyl chloride molding composition described is composed of 99.8 to 97% by weight, relative to the molding composition, of a suspension graft copolymer which is, in turn, composed of 99.7 to 85% by weight of polymerized vinyl chloride units, 0.9 to 10.5% by weight of polymerized ethylene units and 0.09 to 10.5% by weight of polymerized vinyl acetate units, with the proviso that the total of the polymerized ethylene and vinyl acetate units is 0.3 to 15% by weight, relative to the graft copolymer, and also 0.01 to 0.5% by weight, relative to the molding composition, of at least one free alkylarylsulfonic acid having 3 to 16 C atoms in the alkyl chain or at least one alkylsulfonic acid having 8 to 16 C atoms, and also 0.005 to 0.5% by weight, relative to the molding composition, of at least one water-soluble wetting agent which is free from metal ions and contains 12 to about 80 C atoms and a quaternary N atom which forms a salt with a carboxylic or sulfonic acid group.

Abstract: Disclosed is a thermosetting resin composition comprising (a) a bismaleimide and/or a polymaleimide and (b) at least one member selected from alkenylaniline derivatives, linear dimers thereof, and polymers thereof. In addition to components (a) and (b), this resin composition can contain (c) a polymerizable unsaturated substance.

Abstract: What is disclosed are a method for making a transparent impact-resistant polymer comprising a rubbery phase of grafted polybutadiene and a hard copolymer phase, which polymer is adaptable to use as a molding material, which method comprises:(1) in a first polymerization stage, dissolving a solid polybutadiene rubber in a monomer mixture comprising (a) methyl methacrylate, (b) styrene, and (c) at least one of methyl acrylate or ethyl acrylate to give a solution containing from 3 to 10 percent by weight of said rubber, and then polymerizing the solution using an initiator promoting graft copolymerization and in the presence ab initio of a chain transfer agent until an amount of said monomer mixture which is one to two times the weight of said polybutadiene rubber introduced is converted, said monomers (a), (b), and (c) being present in said monomer mixture in a ratio by weight of (73.+-.5): (22.+-.2); (5.+-.

Abstract: Polymeric products containing cationic salt groups, their method of polymerization and their use in coating applications are disclosed. The dispersions are prepared by dispersing in water an at least partially neutralized amine group-containing polymer followed by adding a polymerizable ethylenically unsaturated monomer composition to the dispersion and subjecting the dispersion to addition polymerization conditions. The resultant dispersions are useful in coating applications.

Abstract: A process for preparing a modified block copolymer by graft-reacting at least one maleic acid compound with an aromatic vinyl compound/conjugated diene compound block copolymer containing at least one polymer block mainly composed of a conjugated diene compound and at least one polymer block mainly composed of an aromatic vinyl compound, the aromatic vinyl compound/conjugated diene compound weight ratio being within the range of 5/95 to 97/3, characterized in that said graft-reaction is carried out under conditions wherein the generation of radicals can be substantially inhibited. According to this process, it is possible to prevent gelation of the product in the graft-reaction, and the modified block copolymer obtained has excellent appearance characteristics, mechanical properties, and transparency.

Abstract: The adhesive or adhesive component according to the invention, which contains a vinyl monomer, a vinyl polymer, a compound producing free radicals, and, as an adhesion promoter, an acid amide or imide which is substituted on the nitrogen atom by a chlorosulfonated alkyl, aryl or aralkyl group, forms, together with an amine accelerator, an adhesive with which heat-, oil- and water-resistant bonds, for example of metals, polymeric materials, glass and ceramics, having very high tensile shearing strength can be obtained. The adhesive can also be converted into the form of a dried sheet, with or without carrier, and in this form can be used for bonding.

Abstract: A process for producing a graft-polymer comprises adding an aqueous solution of a salt of a strong acid and a monovalent strong base, which solution has been adjusted to a pH value of 8 to 13, to a rubber latex containing diene rubber particles and a fatty acid soap as an emulsifying agent to coagulate the above mentioned rubber particles, and thereafter adding a vinyl monomer to the latex containing the coagulated rubber particles to graft-polymerize the vinyl monomer.According to this process, the formation of rubber masses and macroparticles during the coagulation is reduced and a rubber latex containing rubber particles having a narrow range of particle size distribution is obtained. When a graft-copolymer obtained by using the latex is blended with thermoplastic resins such as vinyl chloride resins, the impact resistance of the thermoplastic resins can be remarkably improved without impairing their transparency and gloss.

Abstract: Copolymers containing an acrylamidophenol as a crosslinking site and the corresponding crosslinked polymers are disclosed. The acrylamidophenol unit can be copolymerized with a wide variety of other monomers to provide crosslinkable and crosslinked polymers with useful properties. The acrylamidophenol unit provides for crosslinking at low pH with conventional crosslinking agents. The acrylamidophenol monomer unit is present in the copolymer from about 0.5 to 50 percent by weight and has the formula: ##STR1## wherein: x is 1 or 0,L is a linking group,R represents hydrogen or methyl, andR.sup.1 through R.sup.5 are independently selected from the group consisting of hydrogen, hydroxy, alkyl from 1 to 6 carbon atoms and aryl from 6 to 10 carbon atoms; with the proviso that at least one of R.sup.1 through R.sup.5 is hydroxy and at least one of the positions ortho or para to said hydroxy has a hydrogen atom attached thereto. The remainder of the polymer can comprise from 50 to 99.

Abstract: A hydrophilic polymer comprises a main component of a block copolymer and/or a graft copolymer which has at least one hydrophobic hard segment-hydrophilic segment-hydrophobic hard segment unit wherein said hydrophobic hard segment is a binding phase segment having an average molecular weight of more than 1,000 and said hydrophilic segment is a segment having a hydrophilic group connected to thioether bond on a side chain and having an average molecular weight of more than 1,000.

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: Disclosed is a process for the production of rubber-modified styrene copolymers, particularly high rubber content styrene copolymers, such as high rubber content ABS polymers, by suspension polymerization, comprising suspension polymerizing an admixture of polymerizable materials comprising styrene monomer, rubber polymer, and optional additional monomers copolymerizable therewith; and melt extruding the resultant rubber-modified styrene copolymer under extrusion conditions having a shear force sufficient to homogeneously disperse the rubber phase throughout the copolymer. Through the use of the process of the instant invention, high rubber content styrene copolymers may be produced in a single suspension step, with impact properties and surface appearance comparable to copolymers produced in the conventional two-step polymerization process.

Abstract: Copolymers of vinyl esters and crotonic acid are commonly prepared by polymerizing the monomers in bulk or in solution by means of a radical-forming initiator in the presence of a regulator. The polymers should be free from residual monomers and impurities as far as possible. This may be realized in that upon completion of the polymerization the unreacted monomers and other volatile impurities are removed from the reaction mixture by distillation. For this purpose, the use of an entrainer is advantageous. The copolymers are suitable as starting materials for adhesives and hair lacquers, hair setting lotions as well as hair sprays.

Abstract: Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

Abstract: An improved process for the preparation of copolymers by the polymerization of from about 25 to 85 parts by weight of a styrene and/or .alpha.-methylstyrene monomer together with about 15-75 parts by weight of acrylonitrile and/or methacrylonitrile monomer in an aqueous dispersion in the presence of a compound yielding free radicals is disclosed whereby the quantity of monomer remaining in the copolymer after polymerization is substantially reduced. A compound yielding water-soluble free radicals is added to the aqueous reaction medium, containing copolymer as well as non-converted monomer, in a quantity of between about 0.05 and 2.5 parts per 100 parts by weight of monomer and copolymer present in the reaction medium, at a point of time at which (a) the rate of conversion of monomer to copolymer is less than 15% per hour, (b) the degree of conversion of monomer to copolymer is greater than 75%, and (c) at least 0.

Abstract: An adhesive composition comprising a 2-cyanoacrylate and at least one member selected from the group consisting of substituted or unsubstituted aliphatic carboxylic acids having three or more carboxyl groups, anhydrides thereof, partial esters thereof, aromatic polycarboxylic acids having three or more carboxyl groups and anhydrides thereof. This composition has a high impact strength, is suitable for bonding metallic substrates to one another and is also excellent in resistance to heat, weather, and water.

Abstract: A process for preparing polymer resins of high impact resistance which comprises coagulating a latex of a rubbery polymer grafted or not with at least one ethylenic monomer in the presence of a suspension stabilizer and a coagulating agent to make a stable aqueous suspension of coagulated particles of said rubbery polymer, adding at least one ethylenic monomer to the aqueous suspension and subjecting the resultant mixture to suspension polymerization.

Abstract: Processes for making polymeric compositions which have methacrylic and/or acrylic chains grafted onto a copolymerized vinyl diene substrate. The compositions, which are novel, are particularly useful as impact modifiers for polyvinyl chlorides.