Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.

Abstract: A process for producing a polyolefin having a multimodal molecular weight distribution wherein the polymerization is conducted in the presence of hydrogen and a catalyst system containing aluminoxane and at least two different metallocenes each having different olefin polymerization termination rate constants in the presence of hydrogen, and the process of producing the catalyst system.

Abstract: Catalyst systems, methods for the preparation thereof, and olefin dimerization processes therewith are provided. Catalyst systems comprise at least one alkali metal hydroxide supported on a low-sodium, type Y zeolite.

Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from potassium carbonate, sodium carbonate, an aluminum-containing compound, and water. Catalyst systems comprise of at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises of at least one promoter.

Abstract: A metallic, gold colored polyolefin container prepared from a composition comprising an olefin polymer, a mica-based gold pigment, a mica-based bronze pigment, carbon black, and optionally, a yellow pigment is provided and produced in a grit blasted mold.

Abstract: Fine, pure, boehmite alumina crystallites are peptized, partially precipitated and phosphated, hardened, and dried to form a xerogel. The alumina can be impregnated with a chromium compound. The chromium-containing catalyst is activated by calcination. The activated catalyst can be used as a polymerization catalyst to polymerize mono-1-olefins.

Abstract: The corrosion tendencies of polymers of 4-methyl-1-pentene, when combined with tris-(3,5-ditert-butyl-4-hydroxybenzyl)isocyanurate and bis-(2,4-ditert-butyl)pentaerythritol, diphosphite are reduced. Optionally, metal stearates can be added to further reduce the polymer corrosion tendencies.

Abstract: An alumina-containing material is phosphated with mono- and dialkylphosphate esters. These partial phosphate esters are produced by a solvolysis reaction of a phosphorus compound and an alcohol. The phosphated alumina-containing material, when combined with a transition metal, such as chromium, can be used as a polymerization catalyst system to polymerize mono-1-olefins.

Abstract: Olefins are polymerized with a catalyst composition which forms on mixing a supported chromium oxide catalyst system and a silane compound. This composition allows the production of one or more comonomers in-situ. The resultant polymer has a lower density, a higher melt index, and a higher high load melt index than polymers produced with a similar catalyst system in the absence of a silane compound.

Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, in dimerization processes therewith are provided. Catalyst supports are prepared from potassium carbonate, sodium carbonate, an alumina-containing compound, and water. Catalyst systems comprise of at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises of at least one promoter.

Abstract: Catalyst systems, methods to improve a catalyst system, and dimerization processes therewith are provided. Catalyst systems which comprise at least one elemental alkali metal supported on an alkali metal carbonate catalyst support, are contacted with a liquid organic solvent in order to improve the isomer ratio of the desired reaction product(s) to undesired product(s).

Abstract: A silica-titania cogel or silica-titania-chromium tergel is first aged at a substantially neutral pH, then aged at an alkaline pH, and then spray dried or azeotrope dried to form a xerogel. Optionally, a pore-preserving agent can be added prior to drying. The cogel can be impregnated with a chromium compound. The chromium-containing catalyst is activated by calcination. The activated catalyst can be used as a polymerization catalyst to polymerize mono-1-olefins.

Abstract: A copolymer of ethylene and a higher alpha-olefin, preferably 1-hexene and/or 4-methyl-1-pentene, can be produced using an activated and subsequently carbon monoxide reduced chromium containing catalyst and a trialkyl boran cocatalyst. The polymerization process must be carefully controlled to produce a copolymer resin that can be made into a tough, impact resistant film.

Abstract: An alumina-containing material is phosphated with mono- and dialkylphosphate esters. These partial phosphate esters are produced by a solvolysis reaction of a phosphorus compound and an alcohol. The phosphated alumina-containing material, when combined with a transition metal, such as chromium, can be used as a polymerization catalyst system to polymerize mono-1-olefins.

Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided. Catalyst systems comprise at least one elemental alkali metal and at least one paraffinic material deposited on an alkali metal carbonate catalyst support. Optionally, the catalyst system further comprises at least one promoter and at least one carbonaceous compound.

Abstract: This invention concerns catalyst systems for olefin dimerization wherein said catalyst system comprises at least one elemental alkali metal catalyst, supported on an alkali metal carbonate support, wherein said support includes an inorganic nitrate. This invention further concerns processes for the dimerization of olefins. The catalytic support can optionally comprise a carbonaceous compound(s), an inorganic oxide(s), or a mixture thereof. Furthermore, the catalyst system optionally can comprise at least one promoter selected from the group consisting of elemental copper, elemental cobalt, finely divided stainless steel, finely divided glass, or mixtures thereof.

Abstract: A metallic, gold colored composition comprising an olefin polymer, a mica-based gold pigment, a mica-based bronze pigment, carbon black, and optionally, a yellow pigment is provided. Additionally, a process to produce a glossy, metallic, gold colored polyolefin product in a grit blasted mold is provided.

Abstract: Olefin monomer is recovered from a liquid polymerization reaction mixture comprising olefin monomer, catalyst residue, and catalyst deactivation compounds by washing the mixture with water and then separating the organic phase and aqueous phase. The liquid mixture can also comprise soluble olefin polymer.

Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided catalyst supports are prepared from an alkali metal carbonate, water, water soluble ketone and optionally at least one carbonaceous compound. Catalyst systems comprise at least one elemental alkali metal deposited on the catalyst support. Optionally, the catalyst system further comprises at least one promoter.

Abstract: Improved, stronger poly(arylene sulfide) fibers can be produced by treatment of a crystallizable poly(arylene sulfide) fiber with an organic halide, either before or after annealing. Physical properties, such as density and abrasion resistance, can be increased after said treatment.