Abstract: In the polymerization of .alpha.-olefins, a titanium trichloride containing catalyst activated by copulverization with at least one additive selected fromI. an organic compound containing oxygen, sulfur or phosphorus such as:A. Organic oxygen compounds selected from ethers, ketones and esters;B. Organic sulfur compounds selected from thioethers, thiophenols and thioalcohols; andC. Organic phosphorus compounds.Ii. an organic compound of (I) containing oxygen, sulfur or phosphorus in combination with an aluminum halide, andIii. a complex or reaction product of an organic compound of (I) with an aluminum halide.Provides substantially improved catalytic activity and reduces amorphous polymeric by-products while enhancing stereoregularity. The catalytic activity of these catalysts is further enhanced by washing with an organic solvent subsequent to copulverization to remove excess additive. Preferred catalysts are those which contain aluminum chloride with the titanium trichloride.

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 or oxygen containing ligand.

Abstract: Process for the dispersion polymerization or copolymerization of olefins, especially ethylene alone or with an .alpha.-olefin, which is conducted in the presence of a surface-active compound containing one or more perfluorocarbon groups and, optionally, one or more hydrophilic groups, to reduce fouling of the reactor with adherent polymer particles. Particularly effective when olefins are polymerized with supported transition metal hydrocarbyl catalysts in non-polar hydrocarbon diluents.

Abstract: 1,3-Butadiene is polymerized in the liquid phase in the presence of a catalyst composition comprising:A. A cobalt-containing component;B. A reducing agent comprising RalX.sub.2 wherein R is hydrogen or a hydrocarbon radical of 1-8 carbon atoms, and X is halogen; andC. CS.sub.2The cobalt-containing component may be a cobalt salt, such as a cobalt halide, carboxylate, thiocarboxylate, carbonate, thiocarbonate, etc. or a complex of such a salt with an oxygen-containing or nitrogen-containing group either in the same compound or in a separate compound. Typical aluminum hydride or hydrocarbon dihalides that may be used are aluminum hydride dichloride, ethyl aluminum dichloride, ethyl aluminum dibromide, etc. With appropriate solvent and temperature, butadiene polymers having at least 90% cis-1,4 microstructure and in many cases 95-99% cis-1,4 are obtained in high yield. These polymers have excellent green strength and windup tack.

Abstract: A new catalyst component and its use with an organoaluminum compound, which component is a brown solid of high surface area and large pore volume comprising beta titanium trichloride and a small amount of an organic electron pair donor compound. This solid when used in conjunction with an organoaluminum compound to polymerize alpha-olefins produces product polymer at substantially increased rates and yields compared to present commercial, purple titanium trichloride while coproducing reduced amounts of low-molecular-weight and, particularly, amorphous polymer. Combinations of this new catalyst component and an organoaluminum compound can be further improved in their catalytic properties by addition of small amounts of modifiers, alone and in combination. Such combinations with or without modifiers show good sensitivity to hydrogen used as a molecular weight controlling agent. The combinations are useful for slurry, bulk and vapor phase polymerization of alpha-olefins such as propylene.

Abstract: For the production of polyalkenamers there are provided catalysts consisting essentially of a catalyst system for the ring-opening polymerization of cyclic olefins consisting essentially of (1) a tungsten or molybdenum compound; (2) an organoaluminum compound; and (3) an ether of vinyl alcohol, of allyl alcohol, or of 2-butene-1,4-diol, the molar ratio of component (1) to component (2) being less than 1 : 1 and the molar ratio of component (1) to component (3) being less than 100 : 1. The catalyst system may also contain a compound containing one or more hydroxyl or sulfhydryl groups in a molar ratio to component (1) of about 0 : 1 to 2 : 1, respectively.

Abstract: Ziegler-type hydrocarbon-soluble catalyst systems for the polymerization of conjugated diolefins, or mixtures thereof, to obtain high molecular weight polymers possessing varying proportions of trans-1,4 units, in the range of 50-90%. The catalyst systems are based on a non-reduced salt of titanium, an organometallic compound, and an iodine-containing compound, or iodine corresponding to the generalized formula Ti(halide).sub.4 -M.sub.n I.sub.m -AlR.sub.a X.sub.3 -a, where M is aluminum or tetravalent tin, n is 0 or 1, m is the valence of M and where n is 0, m is 2, X is Cl, Br or I, a is 2 to 3, R is alkyl, halide is Cl, Br or I, and where halide is I, M.sub.n I.sub.m may be omitted.