Abstract: Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with hydrogen while introducing a nonmetallic chlorine-containing compound into a reactor of the multiple reactor system in an amount to add from about 0.05 to about 0.3 weight percent chlorine to the catalyst and thereafter purging the system with about 100 to about 50,000 cubic feet of hydrogen per cubic foot of catalyst resulting in a reforming system having increased activity and providing enhanced RON values with reduced cracking of feedstock.

Abstract: An arylene sulfide copolymer and a process for preparing same by contacting a mixture of two structurally different dihaloromatic compounds, at least one organic amide, at least one sulfur-containing compound, and water, and continuous long fiber reinforced plastics containing arylene sulfide copolymer as the polymer matrix or containing arylene sulfide copolymer in a thermoplastic resin matrix.

Abstract: A process for preparing high molecular weight arylene sulfide polymers by dehydrating an aqueous mixture of a sulfur source and a cyclic organic amide to form a dehydrated mixture, contacting the dehydrated mixture with a dihaloaromatic compound to produce a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wherein an aqueous alkali metal carboxylate mixture is added to the polymerization mixture after the conversion of the dihaloaromatic compound is about 40 percent to about 30 minutes prior to entering into termination of the polymerization.

Abstract: In a first embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer source which comprises at least one dihaloaromatic compound. The amount of alkali metal carboxylate present during the polymerization process ranges from about 0.01 to about 0.03 mole per each mole of sulfur present in the resulting arylene sulfide resin. The total amount of water present during the polymerization process ranges from about 1.02 to about 2.1 moles per each mole of sulfur present in the resulting arylene sulfide resin.

Abstract: A reinforced plastic which comprises a continuous long fiber reinforcing material in an arylene sulfide sulfone copolymer matrix consisting essentially of two structurally different arylene sulfide sulfone units within the polymer backbone.

Abstract: In one embodiment of this invention a surface silicated alumina composition, as opposed to conventional silica alumina, is provided. Such composition may also be fluorided and/or phosphated or phosphited. The resulting compositions are broadly useful but are of particular applicability as supports for chromium olefin polymerization catalysts. In another aspect alumina is fluorided and used with hexavalent chromium catalyst and a co-catalyst or in the alternative with an organochromium catalyst. If desired the support in this embodiment can also be phosphated or phosphited. In another embodiment, aluminum phosphate is formed in the pores of alumina. In contrast with alumina catalyst supports of the prior art, the supports of this invention allow for the production of olefin polymers at high rates of productivity. Also novel high density ultrahigh molecular weight polymers are produced.

Abstract: A method for countering the adverse effect of contaminating metals on a crystalline aluminosilicate catalyst comprising contacting the catalyst with a reducing gas under suitable conditions.In a preferred embodiment, the catalyst contains antimony.

Abstract: A method for countering the adverse effect of contaminating metals on a cystalline aluminosilicate catalyst comprising contacting the catalyst with a metallic passivating agent to effect some passivation of the effects of the contaminant metals and with a reducing gas under suitable conditions. In a preferred embodiment, the catalyst contains antimony.