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: A compound having the formula ##EQU1## wherein X is hydrogen, chlorine or a methyl group; homo and copolymers thereof and flame resistant articles made from such polymers.

Abstract: A mixture which can be converted to a heat-resistant foamed plastic and which contains a polyimide of an unsaturated dicarboxylic acid, an azomethine, a solid blowing agent, and optionally a polyamine. On warming, the mixture gives a foamed plastic of high heat resistance and good resistance to chemicals.

Abstract: A mixture which can be converted to a heat-resistant foamed plastic and which contains a solid blowing agent, a thermoplastic prepolymer of a polyimide of an unsaturated acid, an azomethine and a polyamine. On warming, the mixture gives a foamed plastic of high heat resistance and good resistance to chemicals.

Abstract: A process for the ring-opening polymerisation of cyclic olefins on catalysts ofA. a halide of a metal of Groups VB and VIB of the Periodic System,B. an organometallic compound of a metal of Groups IIA, IIIA and IVa of the Periodic System, andC. optionally a cocatalyst,Optionally in an inert organic solvent at temperatures of from -70 to +60.degree.C, wherein from 0.1 to 10% by weight, based on monomer, of a compound containing a C=C-double bond in conjugation with a CO-double bond is added during or after polymerisation in the presence of the active catalyst.

Abstract: Method of producing a copolymer of cyclopentene comprising the steps of preliminarily mixing in an inert solvent a polycyclic olefin having at least one double bond in a ring, with a metallic compound containing tungsten or molybdenum as a catalyst, to form a complex compound with each other; polymerizing cyclopentene in an inert solvent in the presence of a catalyst system comprising a metallic compound of tungsten or molybdenum and an organo metallic compound of Group I-IV of the Periodic Table, and then adding the complex compound to the polymerizing cyclopentene system, thereby to produce a novel copolymer of cyclopentene.

Abstract: First polymerization of a mixture of styrene-type monomers and conjugated diene monomers containing 30 to 70% by weight of styrene-type monomers is carried out, and when 40 or more of the diene monomers have been converted to a copolymer, there are then added styrene-type monomers in such an amount that the content of styrene units accounts for a proportion of 70 to 85% by weight of the finally obtained block copolymers, followed by completion of the polymerization. Alternatively, when all the diene monomers added have been converted to the copolymer, the second polymerization of styrene type monomers is carried out in the presence of a small amount of conjugated dienes as a polymerization retardant. Block copolymers obtained thus are useful for sheet or film molding having good low-temperature impact strength.

Abstract: A process of polymerizing conjugated diolefinic monomers containing from 4 to about 12 carbon atoms to high molecular weight polymers by bringing said monomers into contact with a catalyst system consisting of (1) an iron-containing compound, (2) an organometallic reducing agent from Groups I and III of the Periodic Table, and (3) a sulfur oxygen containing ligand.

Abstract: A method of preparing sulfur vulcanizable unsaturated interpolymers of at least one terminally unsaturated monoolefin selected from the group consisting of 1-butene and .alpha.-olefins containing from five to 12 carbon atoms with at leeast one nonconjugated diolefin selected from the group of 4- and 5-methyl-1,4-hexadienes in which 5-methyl-1,4-hexadiene is at least 15 mole percent and in which the terminally unsaturated monoolefin comprises from about 98 to about 70 mole percent of the total.

Abstract: An antistatic polymer blend comprising a synthetic polymer and an antistatically effective amount of a compound of the formula: ##EQU1## wherein R is alkyl of 4 to 18 carbon atoms unsubstituted or substituted by halo or aryl.

Abstract: A normally hydrophilic microporous material having a polymeric matrix and a filler dispersed throughout the matrix wherein the filler contains active polar groups, is rendered hydrophobic by exposing the material to a reactive compound. In one preferred embodiment of the invention the reactive compound is a silane or a silazane whereas in another preferred embodiment the reactive compound is a Werner-type complex of fatty acids coordinated with a metal. The treated microporous material is rendered impervious to water-based liquids but remains pervious with respect to vapors or gases.

Abstract: The process for curing polymers with chloronitroso compounds can be accelerated by incorporating metallic compounds as accelerators.