Abstract: There is disclosed an improved method of preparing ABC block polymers, wherein A is .alpha.-methylstyrene, B is a conjugated diene, and C is styrene or a substituted styrene.

Abstract: A process for producing cis-1,4-polybutadiene by contacting butadiene with a catalyst consisting of (1) at least one organoaluminum compound, (2) at least one organonickel compound selected from the class consisting of nickel salts of carboxylic acids, organic complex compounds of nickel and nickel tetracarbonyl, (3) boron trifluoride gas or a boron trifluoride etherate complex, and (4) at least one alkyl substituted hydroxy containing aromatic compound wherein the alkyl groups leave the hydroxy groups unhindered for chemical activity in that no alkyl groups are present simultaneously on both positions ortho to the hydroxy groups.

Abstract: The green strength of synthetic elastomers is improved by forming interpolymers from at least one type of various synthetic elastomer forming monomers with an epoxy containing monomer having the formula: ##STR1## where R.sub.1 contains from 0 to 8 carbon atoms and R.sub.2 contains from 1 to 4 carbon atoms. Typical elastomer forming monomers include at least one conjugated diene having from 4 to 10 carbon atoms, olefins having from 2 to 14 carbon atoms along with a diene having from 4 to 6 carbon atoms, and combinations thereof. The interpolymer preferably is blended with synthetic elastomers or natural rubber (cis-1,4-polyisoprene) and utilized for various industrial uses such as tire carcasses including radial truck tire carcasses. The green strength is further improved if a small amount of an epoxy cross-linking agent is utilized. Examples of suitable cross-linking agents include monoamines and polyamines, monoanhydrides and polyanhydrides, and monocarboxylic acids, as well as polycarboxylic acids.

Abstract: There is disclosed an olefin metathesis process which comprises subjecting at least one olefin to a catalyst system consisting of (1) salts of the metals selected from the group of tungsten, molybdenum and chromium, said salts being halides or the reaction products of these metal halides with carboxylic acids, phenols and 1,3-diketones, (2) a material selected from the group represented by the formulae:R.sub.3-n MX.sub.nandR.sub.3 M.sub.2 X.sub.3wherein R is an alkyl radical containing from 1 to 12 carbon atoms, M is selected from the group consisting of aluminum, gallium and indium, X is a halogen from the group of fluorine, chlorine, bromine and iodine, and n equals 0, 1 or 2, and (3) a compound defined by the formula:N R.sub.1 R.sub.2 R.sub.3in which R.sub.1 and R.sub.2 are selected from the group of hydrogen, alkyl, aralkyl, aryl, alkenyl and alkaryl, R.sub.

Abstract: There is disclosed the method of preparing photographic grade hydroquinone from technical grade hydroquinone which consists of treating a solution of the technical grade hydroquinone in the presence of a palladium catalyst with hydrogen while the hydroquinone solution is at a pH between about 3 and about 6.

Abstract: This invention discloses homopolymers and interpolymers of nonconjugated diolefins defined by the formula: ##STR1## where R.sub.1, R.sub.2 and R.sub.3 may be hydrogen, a lower alkyl group containing up to 4 carbon atoms or an aryl group and R.sub.4 may be a lower alkyl group containing up to 4 carbon atoms or an aryl group. It is also disclosed that these homopolymers and interpolymers can be prepared by solution polymerization employing cationic catalyst systems and also coordination catalyst systems. The polymers are either resinous or rubbery in nature.

Abstract: There is disclosed a method for preparing a catalyst useful for olefin metathesis comprising a mixture of a salt of a metal selected from tungsten, molybdenum, rhenium and tantalum, an oxygenated organic compound selected from the group represented by the formula: ##STR1## said mixture being exposed to ultraviolet radiation to give approximately 0.4 kilowatt hours per mole of the metal salt.A process of olefin metathesis utilizing this catalyst is also disclosed.

Abstract: A free-flowing, homogeneous, polymer-coated pigment, particulate powder coating composition is obtained in preparing a coating composition involving catalytic polymerization of at least one ethylenically unsaturated monomer in a nonaqueous aliphatic hydrocarbon solvent for said monomer and in the presence of a dispersion stabilizer having a polymeric segment solvated by said solvent and another segment relatively non-solvated by the solvent and associated with polymer particles which are formed upon said polymerization of said monomer and which are insoluble in said solvent for providing a nonaqueous dispersion of said polymer particles, through a sequence of steps including:I. preparing said dispersion stabilizer in a solution containing a coalescing solvent which is an active solvent for said polymer particles;Ii. admixing a portion of the product of (i) with said pigment to form a pigment dispersion;Iii. drying another portion of the product of (i);Iv.

Abstract: The invention is directed to a catalytic process where two unsaturated substances of which at least one of them is a high molecular weight polymeric material containing double bonds either along the main chain or as part of pendant side groups, are inter-reacted by means of an olefin metathesis reaction leading to the formation of new and useful polymeric materials.

Abstract: Method 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 nitrogen-containing ligand.

Abstract: There is disclosed a process for the preparation of butenes from propylene using a catalyst comprising from 1 to 15 percent by weight of vanadium oxide -- V.sub.2 O.sub.5 and from 0.1 to 5 percent by weight of tungsten oxide -- WO.sub.3 impregnated on a support which has a surface area of 10 to 400 square meters per gram which catalyst has been activated by contact with from 0.1 to 10 moles of a trialkylaluminum compound per mole of V.sub.2 O.sub.5.

Abstract: There is disclosed a method which comprises polymerizing a cycloolefin selected from the group consisting of cyclooctene and 1,5-cyclooctadiene by subjecting said cycloolefin to a catalyst comprising (A) a tungsten halide salt of the general formula R.sub.m.sub.-n WX.sub.n wherein X represents chlorine or bromine and R is selected from the group consisting of alkoxy, haloalkoxy, aryloxy, alkaryloxy, and acetyl acetonyl radicals containing up to 20 carbon atoms; m being 6 when X= Cl or 5 when X = Br; and wherein n may be 3 to 6 inclusive when X = Cl or 3 to 5 inclusive when X = Br and (B) an organoaluminum compound of the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.

Abstract: There is disclosed an improved dehydrogenation catalysts prepared from mixtures of WO.sub.3 and V.sub.2 O.sub.5 ; mixtures of MoO.sub.3 and V.sub.2 O.sub.5 and mixtures of Cr.sub.2 O.sub.3 or CrO.sub.3 and V.sub.2 O.sub.5 which are heated to temperatures to melt the oxides to form W(VO.sub.4).sub.2, Mo(VO.sub.4).sub.2 and CrVO.sub.4 which are then treated with a reductant to form the active dehydrogenation catalytic species, the methods for the preparation of these catalysts and to the improved dehydrogenation processes which can be effected when dehydrogenatable hydrocarbons are in contact with these catalysts.

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: There is disclosed a method of preparing high cis-1,4-polybutadiene which comprises continuously polymerizing butadiene in mixture with an inert aliphatic or cycloaliphatic solvent employing as a catalyst a mixture comprising (A) at least one trialkyl aluminum wherein the alkyl group contains from 2 to 8 carbon atoms, (B) at least one nickel salt of carboxylic acids and (C) at least one boron trifluoride complex of ethers in which each of the individual catalyst components are continuously injected into the polymerization vessel containing the mixture of butadiene and inert solvent.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) alkoxysilanes. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: A method of preparing halogenated interpolymers wherein .alpha.-olefins are polymerized with nonconjugated polyolefins in the presence of coordination catalysts to prepare interpolymers which are subsequently reacted with suitable halogenating compounds to form new compositions of matter.

Abstract: The composition is disclosed of graft and block copolymer and interpolymers comprising subjecting two dissimilar polymeric substances to catalysts capable of inducing the olefin metathesis reaction.

Abstract: There is disclosed a new process for ring-opening polymerization of cycloolefins by the use of a catalyst comprising (A) tungsten or molybdenum halides, (B) alkyl aluminum halides and (C) an alcohol which has a nitrile substituent. Also the catalyst is disclosed as useful in metathesis of olefins.

Abstract: There is disclosed a method comprising the oxidative dehydrogenation of at least one hydrocarbon selected from the group consisting of butene-1, butene-2, 2-methyl-1-butene, 2-methyl-2-butene, 3-methyl-1-butene, n-pentene, 2,3-dimethyl-1-butene, 2,3-dimethyl-2-butene, 2-methyl-1-pentene, 2-methyl-2-pentene, 4-methyl-2-pentene, 3-methyl-1-pentene, 3-methyl-2-pentene, 2-ethyl-1-butene, ethyl benzene and isopropyl benzene at oxidative dehydrogenation conditions while in the presence of a catalyst comprising cobalt-molybdate which has enhanced activity by being calcined at temperatures from 750.degree.-1100.degree. C for at least one hour prior to use in the oxydehydrogenation process.