Abstract: A process as disclosed for improving the particle size of a olefin polymerization catalyst. The process involves combining the catalyst with an alkoxide-containing liquid comprising a transition metal alkoxide and an aluminum alkyl, causing said alkoxide and said aluminum alkyl to react for form a precipitate and then recovering the resulting solid. Also disclosed are the catalysts produced by such a process and the use of such catalysts in the polymerization of olefins.

Abstract: A new highly active olefin polymerization catalyst as disclosed. The catalyst is prepared by contacting a magnesium dihalide with a halogenated titanium alkoxide to obtain a first solid, washing this first solid until it is substantially free of soluble halogenated titanium alkoxide, then contacting the first solid with a titanium tetrachloride to yield a second solid.

Abstract: A process for polymerizing olefins using a catalyst comprising an organolanthanide compound is disclosed wherein the active lifetime of the catalyst is increased by the employment of hydrogen during the polymerization.

Abstract: High activity olefin polymerization catalysts based on organolithium compounds and transition metal compounds are disclosed. In one catalyst system an organolithium compound is employed in combination with titanium tetrachloride and the Li/Ti ratio is in the range of about 20 to about 50. In another catalyst system the organo lithium compound is combined with a rare earth metal halide. For best results these catalyst systems are employed at pressures of at least about 100 psi. In ethylene polymerization an ethylene partial pressure of at least about 100 psi is preferred.

Abstract: A lanthanide base olefin polymerization catalyst and its use in polymerization are disclosed. The lanthanide based catalyst is prepared by contacting a lanthanide halide with an ether, then contacting the resulting lanthanide composition with an alkali or alkaline earth metal alkyl compound, and depositing the resulting lanthanide product on a particulate support.

Abstract: A catalyst useful in the polymerization of olefinic compounds and particularly 4-methyl-1-pentene is disclosed along with its method of preparation and use. The catalyst is prepared by (a) forming a first component by reacting reactants comprising a magnesium dihalide, a phenol, and alkylbenzoate, and a titanium tetrahydrocarbyloxide; (b) reacting the first component with an organoaluminum halide compound to produce a solid product; and (c) then contacting the resulting solid product with an activating liquid comprising titanium tetrachloride and trichlorosilane in a confined zone under pressure of at least 70 psi.

Abstract: An educational device useful for teaching numbers, addition, subtraction, reading, and logic comprising a flat playing surface having rows of equally dimensioned boxes, ascending numerical indicia associated with the boxes in each horizontal row, blocks of varying dimensions having numbers thereon proportional to their relative horizontal dimensions and being adapted to fit in each row in such a way that the number appearing to the right of the block or block will indicate how may boxes are covered by the block or blocks in that row. In a preferred embodiment there is also provided a set of card containing a numbered card corresponding to each numbered block.

Abstract: A compact easily maneuverable archery bow comprising a handle, flexible limbs extending forward of a said handle, a bowstring, and structure coupling the bowstring and the resilient limbs so that as the bowstring is drawn back rearwardly of the handle the limbs are pulled inwardly back toward the front of the handle to provide force needed for propelling an arrow or the like.

Abstract: A supported high efficiency catalyst component for polyolefin production and methods of making and using the same are disclosed. A catalyst support made from a solid, particulate support material, a second solid material preferably substantially isostructural therewith and an organic electron donor compound is combined with a polymerization-active transition metal compound and optionally a second organic electron donor compound to form the catalyst component. Additionally, a dehydrating agent may be reacted with water in the solid, particulate support material in the production of the catalyst support. The methods of producing such a catalyst support and catalyst component are preferably performed by severe milling in the absence of any solvent. Such a catalyst produces polymer of such high quality and quantity that polymer extraction and polymer deashing are not necessary.

Abstract: A process and catalyst for the polymerization of olefins wherein the catalyst is prepared by reacting scandium, yttrium or rare earth metal halides with certain transition metal compounds, reacting that product with an organometallic compound, and then reacting that product with a halide ion exchanging source.

Abstract: A process for preparing an alkylmercapto ester by reacting an alkyl mercaptoalkanol with an organic carboxylic acid or an organic anhydride in the presence of a titanium-containing catalyst.

Abstract: An aqueous aluminum citrate solution and its preparation from sodium aluminate is disclosed.

Abstract: An olefin polymerization catalyst prepared by reacting a metal dihalide and a transition metal, then reacting that component with a precipitating agent, and then reacting the resulting solid with an activating component, wherein multiple activation steps are used so that it is possible to obtain a given level of activity with less activating component.

Abstract: A novel polymer and polymer treatment method are provided. The method involves irradiation of a polymer under non-gelling conditions at a temperature above the polymer melting temperature and in the absence of oxygen. The polymer is characterized by a unique long chain Y-branched molecular structure.

Abstract: An olefin polymerization catalyst prepared by reacting an admixture of anhydrous magnesium dihalide and hydrous magnesium dihalide with reactants including benzoic acid ester, an alkoxytitanium compound, an organoaluminum halide, and a titanium halide.

Abstract: A process is provided for the analysis of additives in polyolefins involving dissolving the polyolefin in decalin and subsequently precipitating the polymer, isolating a portion of the extract and measuring the additives therein. Apparatus for use in the process are also disclosed.

Abstract: A process for the production of mercapto alcohols wherein an epoxide is reacted with excess H.sub.2 S, the excess H.sub.2 S is separated from the mercapto alcohol, and the thus separated H.sub.2 S is subjected to reaction conditions sufficient to cause entrained epoxide to be converted to mercapto alcohol before the H.sub.2 S is compressed.

Abstract: An olefin polymerization catalyst prepared by reacting water with a magnesium dihalide in the presence of a phase transfer catalyst and reacting the resulting hydrated magnesium dihalide with reactants including a benzoic acid ester, an alkoxytitanium compound, an organoaluminum halide and a titanium halide.

Abstract: A polymerization catalyst providing a good balance of productivity and polymer fines prepared by reacting a metal halide, such as MgCl.sub.2, with a titanium compound, such as Ti(OEt).sub.4, to form a first catalyst component; mixing a solution of said first catalyst component with an organoaluminum compound at a temperature in the range of -100.degree. to 70.degree. C.; then heating to a higher temperature in the range of 50.degree. C. to 110.degree. C. to form additional precipitate, and then reacting the resulting solid with a halogenating agent.

Abstract: A process for producing functional monoolefins having specific types of cis to trans ratios involving disproportionating a functional monoolefin with a hydrocarbyl monoolefin consisting essentially of either (1) an internal olefin or (2) a terminal olefin. Also disclosed are functional olefin compositions useful in controlling insects.