Abstract: Low molecular weight copolymers comprised of ethylene, an alphaolefin and (optionally) a nonconjugated polyene, which copolymers have a viscosity index of at least about 75 and vinylidene-type unsaturation, possess unexpected advantages as intermediates in epoxy-grafted electrical encapsulation compositions.

Abstract: A catalyst composition is provided with an activator in combination with a primary catalyst system. The primary catalyst system is a vanadium compound and an organometallic compound of the formula RMgX, LiAlr.sub.4, or R.sub.A Al.sub.2 X.sub.B, wherein R is a hydrocarbon radical having 1 to 12 carbon atoms, X is a halogen atom; A is a number from 2 to 6, and B is a number from 0 to 4, with the proviso that the sum of A and B is 6 and that at least one of the groups attached either to the vanadium compound or to the organometallic compound is a halogen atom. The activator is bis(trichloromethyl) sulfone.

Abstract: A catalyst composition is provided with an activator in combination with a primary catalyst system. The primary catalyst system is a vanadium compound and an organometallic compound of the formula RMgX, LiAlr.sub.4, or R.sub.A Al.sub.2 X.sub.B, wherein R is a hydrocarbon radical having 1 to 12 carbon atoms, X is a halogen atom; A is a number from 2 to 6, and B is a number from 0 to 4, with the proviso that the sum of A and B is 6 and that at least one of the groups attached either to the vanadium compound or to the organometallic compound is a halogen atom.

Abstract: Improvements in scorch time of natural and synthetic rubber compositions in urethane crosslinking systems employing alkyl derivatives of dithiophosphoric acid as the scorch delay cure catalyst having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are alkyl having at least 12 carbon atoms, or connected together and forman alkylene group having at least 2 carbon atoms, and R.sub.3 is hydrogen or phenethyl.

Abstract: An EPM or EPDM type of elastomer is modified by graft copolymerization with acylic ester type of monomeric material, said monomeric material being material whose homopolymer has a glass transition temperature of not greater than 6.degree. C., in an amount sufficient to provide an ester group (--COO--) content of from 25 to 40% by weight, to yield a mixed copolymerizate vulcanizable to a heat and oil resistant elastomeric state.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.

Abstract: A chlorinated polyethylene elastomer or resin is modified by graft copolymerization with acrylic ester type of monomeric material, whose homopolymers have a glass transition temperature of not greater than 6.degree. C., in an amount sufficient to provide an ester group (--COO--) content of from 25 to 40% by weight, to yield a mixed copolymerizate vulcanizable to a heat and oil resistant elastomeric state.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanophthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.

Abstract: Non-dripping, self-extinguishing polyurethane elastomers comprising, a hexaalkoxymethylmelamine; an organic halogen-containing a compound and a P-substituted phosphocyclopentane 1-oxide incorporated into a polyurethane elastomer.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert its function.

Abstract: There are disclosed novel, dodecahalo-9,10-oxadecahydro-1,4:5,8-dimethanoanthracenes which are useful as flame retardant additives for acrylonitrilebutadiene-styrene (ABS) gum plastics and other polymeric materials, and a method for preparing these novel anthracenes.

Abstract: A fire retardant system comprising a compound having within its structure the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione or 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dioxy nucleus or a compound which is capable of being converted to the 1,2,3,4,9,9-hexahalo-1,4-dihydro-1,4-methanonaphthalene-5,8-dione nucleus and requires no metal oxide addition to exert is function.

Abstract: The known compound, 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonapthalene-5,8-diol (I) is an excellent flame retardant for ABS resins and polyurethanes, particularly, polyether-based polyurethanes. Compound (I) also forms novel molecular complexes with weak bases such as pyridine, pyridine HCl, pyridine oxide, dimethylsulfoxide and dimethylformamide, and which are excellent flame retardants for ABS resins. Compound (I) also exhibits unusual synergistic flame retardant effects in ABS resins and other polymers when used together with certain additives that are not themselves flame retardants.

Abstract: There are disclosed novel, dodecahalo-9,10-oxadecahydro-1,4:5,8-dimethanoanthracenes which are useful as flame retardant additives for acrylonitrile-butadiene-styrene (ABS) gum plastics and other polymeric materials, and a method for preparing these novel anthracenes.

Abstract: The known compound, 1,2,3,4,9,9-hexachloro-1,4-dihydro-1,4-methanonaphthalene-5,8-diol (I) is an excellent flame retardant for ABS resins and polyurethanes, particularly, polyether-based polyurethanes. Compound (I) also forms novel molecular complexes with weak bases such as pyridine, pyridine HCl, pyridine oxide, dimethylsulfoxide and dimethylformamide, and which are excellent flame retardants for ABS resins. Compound (I) also exhibits unusual synergistic flame retardant effects in ABS resins and other polymers when used together with certain additives that are not themselves flame retardants.