Abstract: An amorphous aluminophosphate composition is provided which exhibits a microstructure of sheets and spheres of silica-modified aluminophosphate. Also provided is a method for preparing the composition comprising mixing an aqueous solution containing aluminum ions, phosphate ions and silica ions, with a neutralizing solution, wherein the mixing is conducted with sufficient shear to produce on a microlevel, sheets of silica-modified aluminophosphate and spheres of silica-modified aluminophosphate. A polymerization catalyst and a polymerization process are also provided.

Abstract: The present invention provides a catalyst system that exhibits unexpected control of desired properties in polyolefin products. The catalyst system includes a titanium-supported catalyst in combination with a mixture of tetraethoxysilane (TEOS) and dicyclopentyldimethoxy-silane (DCPMS). This catalyst system has been found to be effective in making polypropylene and polypropylene copolymers having relatively high melt flow rates and moderately broad molecular weight distribution.

Abstract: The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architecture and narrow polydispersity index, in the presence of an initiating system comprising (i) an initiator having a radically transferrable atom or group, (ii) a transition metal compound, and (iii) a ligand; the present invention is also directed to the synthesis of a macromolecule having at least two halogen groups which can be used as a macroinitiator component (i) to subsequently form a block or graft copolymer by an atom or group transfer radical polymerization process; the present invention is also directed to a process of atom or group transfer radical polymerization for the synthesis of a branched or hyperbranched polymer; in addition, the present invention is directed to a process of atom or group transfer radical polymerization for the synthesis of a ma

Abstract: A method of forming a polymer that simultaneously provides an improved level of impact resistance and processability in which an .alpha.-olefin monomer is subjected to polymerization in the presence of a Ziegler-Natta catalyst system and a blend of electron donors including dicyclopentyldimethoxysilane (DCPMS) and propyltriethoxysilane (PTES). The polymer so formed will have a relationship between a first melt flow rate of a homopolymer formed by polymerizing an .alpha.-olefin monomer in the presence of a Ziegler-Natta catalyst system and a first electron donor (MFR (a)), and a second melt flow rate of a homopolymer formed polymerizing an .alpha.-olefin monomer in the presence of the Ziegler-Natta catalyst system and a second electron donor (MFR (b)), is defined by the equation:1.2.ltoreq.log [MFR(b)/MFR(a)].ltoreq.1.

Abstract: Blends of olefin polymers and syndiotactic vinyl polymers are produced by the catalytic polymerization of olefins and aromatic vinyl compounds or methacrylate esters as vinyl compounds in inert diluents in the presence of a catalyst mixture of transition metal compounds, metalloxane compounds and metal alkyl compounds.The blends have a finely dispersed distribution of the blending components and are suitable for the production of films, sheets, fibers, panels, coatings, pipes, hollow objects, injection molded products and foams.

Abstract: The present invention provides a polymerization catalyst comprising (a) a specific transition metal compound, (b) (i) a compound which can form a complex by reaction with the transition metal compound of component (a) or (ii) a specific compound containing oxygen, and optionally, (c) an alkylating agent, and a process for producing polymers in the presence of said polymerization catalyst.By using the polymerization catalyst of the present invention, decrease in the contents of residual metals in obtained polymers, simplification of the process for producing polymers, and reduction of the production cost of polymers can be achieved, and polymers having a high molecular weight can be obtained.

Abstract: A composition of matter includes a polymerizable mixture comprising 1 to 99 weight percent of a first monomer and an initiator therefor, the first monomer being one of 1) at least one free-radically polymerizable monomer or 2) at least one cyanate ester monomer, and 99 to 1 weight percent of a second monomer and an initiator therefor, the second monomer being the member of 1) or 2) that is not selected as the first monomer, wherein the curative for the cyanate ester is a transition metal-containing organometallic compound curing agent and the curative for the free-radically polymerizable monomer is a free-radical generating curing agent or a transition metal-containing organometallic compound.

Abstract: A gelling composition and a process for using the gelling composition for oilfield applications are provided. The gelling composition comprises a water-soluble polymer, a crosslinking agent, and a liquid wherein the water-soluble polymer comprises repeat units derived from a nitrogen-containing olefinic monomer and optionally an olefinic comonomer. The gelling composition can be used in drilling fluids, workover fluids, completion fluids, permeability corrections, water or gas coning prevention, fluid loss prevention, matrix acidizing, fracture acidizing, and combinations of any two or more thereof.

Abstract: An improved process for producing a polymer by polymerizing a monomer having an ethylenic double bond in a polymerization vessel having a polymer scale preventive coating film on its inner wall surfaces, etc. is provided. The coating film is formed by coating a first coating liquid containing a compound selected from the group consisting of an aromatic compound having 5 or more conjugated .pi. bonds and a heterocyclic compound having 5 or more conjugated .pi. bonds, and then coating a second coating liquid on the first layer. The first and second coating liquids are applied by means of steam as a carrier. The second layer has a surface having a contact angle to water of less than 60.degree. after its surface has been brought into contact with a solution of mixture of water and a vinyl chloride monomer in a weight ratio of 1:1, at 50.degree. C. for 1 hour.

Abstract: Transition metal complexes of the formula IL.sub.m MX.sub.n I,whereL is a ligand of the formula II ##STR1## m is 1 or 2, M is a titanium, zirconium, hafnium, vanadium, niobium, tantalum, or a rare earth metal,X is fluorine, chlorine, bromine, iodine, hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.15 -aryl or OR.sup.1,n is 1, 2, 3, or 4 as defined herein, andR.sup.1, R.sup.2, R.sup.3, R.sup.4, and A are as defined herein,and the use of these complexes as catalysts for olefin polymerization are described herein.

Abstract: There is provided process for producing an ethylene-alpha-olefin polymer at a polymerization reaction temperature in excess of the softening temperature of the polymer in a gas-phase fluidized-bed reactor in the presence of a polymerization catalyst and wherein the polymerization reaction is conducted in the presence of an inert particulate material, the improvement comprising: commencing polymerization by polymerizing an ethylene propylene rubber having a crystallinity ranging from about 4 to 18 percent as measured by differential scanning calorimetry.

Abstract: A process for continuously producing copolymer comprising moieties derived from ethylene and an .alpha.-olefin in the presence of a metallocene catalyst system, said process comprising continuously supplying into a liquid-phase reaction zone a feed of ethylene, a feed of liquefied .alpha.-olefin, a feed of diluent, a feed of metallocene catalyst system, and continuously drawing out a reactor effluent produced thereby; and in accordance with a procedure comprising (a) setting the rate of metallocene system feed to a fixed molar rate; (b) introducing said ethylene feed at a fixed rate as required to produce the desired molar quantity of copolymer product per unit time; (c) setting the total rate of all feeds and the volume of said liquid-phase reaction zone to a fixed residence time, said residence no less than the minimum required to substantially eliminate molecular ethylene from said effluent; (d) performing an isokathic adjustment of the ethylene/.alpha.

Abstract: Single component metallocene catalysts for .alpha.-olefin polymerization are disclosed. Prior art cation metallocene catalysts have required a separate anion co-catalyst like methyl aluminoxane (MAO). However, because the inventive zwitterion ansa metallocene (ZAM) catalysts have a "built-in" anion co-catalyst functionality, the need for a separate anion co-catalyst is eliminated.

Abstract: The present invention relates to a process for introducing a solid catalyst into a gas-phase olefin polymerization reactor. It comprises in particular storing the catalyst in the form of a dry powder in a hopper, withdrawing from the hopper a measured amount of the said catalyst, introducing the said amount of the catalyst and a liquid hydrocarbon into a mixing chamber, mixing the said catalyst with the said liquid hydrocarbon so as to form in the said chamber a suspension of the entrained catalyst with the said liquid hydrocarbon, and introducing the said suspension into the said reactor. In a preferred form, the liquid hydrocarbon is continuously introduced into the chamber and forms a continuous stream to which is added the measured amount of the catalyst and which flows into the reactor.

Abstract: Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Abstract: A gelling composition and a process for using the gellimg composition for oilfield applications are provided. The gelling composition comprises a water-soluble polymer, a crosslinking agent, and a liquid wherein the water-soluble polymer comprises repeat units derived from a nitrogen-containing olefinic monomer and optionally an olefinic comonomer. The gelling composition can be used in drilling fluids, workover fluids, completion fluids, permeability corrections, water or gas coning prevention, fluid loss prevention, matrix acidizing, fracture acidizing, and combinations of any two or more thereof.

Abstract: An organometallic polymer having the following moiety: ##STR1## is disclosed. R.sub.1 and R.sub.2 are independently selected from the group of H, alkyl having 30 or fewer carbons, alkenyl having 30 or fewer carbons, and aromatic having one to ten rings; n=0-30; p=0-30; and M is a metal selected from the group consisting of Sn, Ge, Pb, Hg, Ni, Pd, Pt, Cr, Fe, Co, Cu, and Zn. Most preferably, M is Sn, R.sub.1 and R.sub.2 are n-butyl, n is 3, and p is 3. A preferred antibacterial/antifungal composition may be formed by combining the polymer with a suitable carrier.

Abstract: A polypropylene laminated film containing a crystalline polypropylene layer and, laminated on at least one side of the layer of the crystalline polypropylene, a layer of a copolymer of propylene and at least one .alpha.-olefin of from 4 to 10 carbon atoms having a specific composition, melt flow rate and molecular weight distribution in which the .alpha.-olefin content in the cold xylene soluble portion of the random copolymer is less than 1.7 times the .alpha.-olefin content in the copolymer and the random copolymer satisfies the mathematical expression,B.ltoreq.1.05A-10,wherein A is a weight percentage of the content of said at least one .alpha.

Abstract: A free radical polymerization process for the preparation of a polymer comprising heating a mixture of a free radical initiator, a stable free radical agent, a metal catalyst, or a metal stable free radical complex catalyst, and at least one polymerizable monomer; cooling said mixture; and optionally isolating said polymer.

Abstract: An unsaturated copolymer based on olefin which is superior in dynamic fatigue resistance (flexural fatigue resistance), weatherability, fastness to ozone, stability in thermal aging and exhibits also superior performances in chemical reactivity, in processibility and in compatibility as well as co-vulcanizability with aromatic ring-containing resins, such as styrene-butadiene rubber (SBR) etc., and is useful for materials of various rubber products and as modifier for resin products is proposed, said copolymer comprising a structural unit derived from an .alpha.-olefin having 2-20 carbon atoms in a proportion of 30-99.8 mole %, a structural unit derived from an aromatic ring-containing vinyl monomer in a proportion of 0.1-60 mole % and a structural unit derived from a chain-formed non-conjugated triene or tetraene having in the molecule one vinyl group in a proportion of 0.1-10 mole % and said copolymer having an intrinsic viscosity determined in Decalin.RTM. at 135.degree. C. of 0.05-10 dl/g.

Abstract: Processes for the isolation of a telechelic isobutylene polymer in a non-aqueous system to prevent the generation of waste water having a solvent dissolved therein and processes for the preparation of a telechelic isobutylene polymer having more advantageous unsaturated groups. A process for the isolation of an isobutylene polymer includes a cationic polymerization reaction in a non-aqueous system in the presence of a catalyst MX.sub.n wherein M represents a metallic atom and X may be the same or different and represents a halogen atom or a monovalent hydrocarbon group. The process comprises conducting the cationic polymerization reaction, conducting a ligand exchange reaction of said catalyst, and then removing a component containing M.

Abstract: This invention relates to block polymers containing both crystalline and elastomeric blocks, the block copolymer having an A block and a B block. The A block is a polyethylene or an ethylene polymer optionally containing an alpha-olefin and is generally crystalline. The B block contains an ethylene, .alpha.-olefin copolymer segment and optionally contain an ethylene, .alpha.-olefin, non-conjugated diene terpolymer segment. If the B block contains a diene containing segment, the diene containing segment is furthest from the junction of the A and the B blocks. Also disclosed is a process for manufacture of the block copolymers and methods for coupling the block copolymers. Coupled block copolymers are useful as thermoplastic elastomers exhibiting physical properties approaching those of crosslinked EP or EPDM elastomers, but showing thermal processability after coupling.

Abstract: The present invention concerns prepolymerized catalyst composition for polymerization of .alpha.-olefins, a process for the preparation thereof and a process for polymerization of .alpha.-olefins. According to the polymerization process a procatalyst composition containing a transition metal is prepolymerized with a monomer in order to produce a prepolymerized Ziegler-Natta type catalyst composition and said catalyst composition is contacted with an alpha-olefin monomer, in particular with ethylene or propylene, for preparing a polymer. According to the invention the procatalyst composition is preferably prepolymerized in a medium which is inert to the catalyst components, the viscosity of the medium being so high that the catalyst does not substantially settle in this medium. Because the catalyst composition according to the invention does not have to be dried before being fed into the medium, its activity is high before and during polymerization.

Abstract: Poly(4,5,9,10-tetrahydropyrene-2,7-diyl) derivatives of the formula (I) ##STR1## where the symbols R.sup.1 to R.sup.4 have the following meanings: R.sup.1, R.sup.2, R.sup.3, R.sup.4 are identically or variously H, a straight-chain or branched alkyl chain containing 1 to 22 carbon atoms, it being possible for one or more nonadjacent CH.sub.2 groups also to be replaced by --O--, --COO--, --OOC-- and/or phenylene, aryl or aryloxy groups, it being possible for the aromatic to be substituted by C.sub.1 -C.sub.22 -alkyl, C.sub.1 -C.sub.22 -alkoxy, Br, Cl, F, CN, and/or NO.sub.2, Br, Cl, F, CN, NO.sub.2, or carboalkoxy containing 2 to 23 carbon atoms;n is 10 to 150,are suitable as electroluminescence materials.

Abstract: Polymerizable compositions comprising (a) hydroxypropyl methacrylate; (b) a C.sub.8 to C.sub.10 alkyl ester of acrylic or methacrylic acid; and (c) a free-radical initiator.

Abstract: An article useful for packaging oxygen-sensitive products is disclosed. The article is a single or multi-layer article capable of enveloping the oxygen sensitive product. The article has at least one layer which contains a composition composed of an ethylenically unsaturated hydrocarbon polymer and a transition metal salt. The layer is capable of scavenging oxygen at a rate of at least 1 cc oxygen per square meter per day and has a capacity of at least 250 cc oxygen per square meter per mil thickness of the layer.

Abstract: An immobilized Lewis Acid catalyst system for the carbocationic polymerization of olefin monomer is provided. The catalyst comprises a porous polymer support having catalytically active Lewis Acid residue bonded to the surface of the support including the pore surfaces.

Abstract: A propylene block copolymer comprising: (a) a propylene homopolymer part having (i) an insoluble amount on xylene extraction at 25.degree. C. of 99.0% by weight or more; (ii) an isotactic pentad fraction of 98.0% or more; (iii) an isotactic average chain length of 500 or more; and (iv) a total amount of fractions having an isotactic average chain length of 800 or more obtained in a column chromatographic separation of 10% by weight or more, and (b) a copolymer part comprising propylene and at least one of ethylene and an .alpha.-olefin having from 4 to 12 carbon atoms, the proportion of the propylene homopolymer part (a) being from 50 to 97% by weight based on the total amount of the propylene homopolymer part (a) and the copolymer part (b), and the proportion of the copolymer part (b) being from 3 to 50% by weight based on the total amount of the propylene homopolymer part (a) and the copolymer part (b).

Abstract: An alkenyl-substituted bisnadimide represented by the following formula [1]: ##STR1## [wherein R.sup.1 and R.sup.2 individually represent a hydrogen atom or a methyl group, and E is an alkylene.multidot.phenylene group or an alkylene.multidot.phenylene.multidot.alkylene group represented by the following formula [2]: ##STR2## (wherein a is an integer of 0 or 1, and R.sup.3 and R.sup.3' individually represent a C.sub.1 -C.sub.4 alkylene group or a C.sub.5 -C.sub.8 cycloalkylene group)], a process for the preparation of the same and a process for curing the same are disclosed. Further, an adhesive material and a coating material containing the bisnadimide as a curing component are also disclosed. A cured material obtaind from the bisnadimide has excellent heat resistance, mechanical strength, toughness, adhesion property to many kinds of substrates, and so on. The adhesive material shows excellent heat resistance and the coating material shows excellent boiling water resistance.

Abstract: Improved compositions for scavenging oxygen are disclosed. These materials, characterized by low degree crystallinity and a glass transition temperature of lower than -15.degree. C., have high oxygen scavenging rates at low temperatures. The composition comprises an ethylenically unsaturated hydrocarbon and a transition metal salt catalyst and can be incorporated into various types of layers. It is preferable that the composition be incorporated into layers of multilayered articles used for packaging oxygen-sensitive products such as food products.

Abstract: A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support having immobilized thereon at least one relatively strong Lewis acid and at least one relatively weak Lewis acid.

Abstract: Polymeric dyes that comprise (a) segments that render the dyes soluble or dispersible in hydrocarbon solvents and (b) segments that impart color. The polymeric dyes can be introduced into hydrocarbon solvents or formed in hydrocarbon solvents to form stable colored dispersions, which can be used as toners for electrophotography. In these toners, the polymeric dye contains macromeric moieties that render the polymeric dye dispersible in hydrocarbon solvents. The polymeric dye may contain either a charge-directing chelating moiety or a surface-release promoting moiety or both of these moieties.

Abstract: Epoxy-containing compounds which are essentially free of organic halides are prepared by (I) reacting an allyl derivative of an active hydrogen-containing compound with (II) a peroxygen-containing compound. The epoxy-containing compounds are useful in coatings, castings, laminates etc.

Abstract: A catalyst for olefin polymerization is provided which comprises, as the components, a) a metallocene compound, b) an ionizing ionic compound, c) an organoaluminum compound, and d) a Lewis base compound. This catalyst has a stable active species and improves productivity of an olefin polymer without deterioration of the catalytic activity.

Abstract: A liquid resin-forming composition contains a polyether-ene such as a polyallyl glycidyl ether, a free radical-polymerizable monomer such as an acrylate ester, a free radical initiator such as an organic peroxide and/or an organic hydroperoxide and a promoter such as an amine and/or polyvalent metal carboxylate. Certain properties of the composition, specifically, its volatiles content, flash point and viscosity, can be such as to make the composition particularly useful for application to a solid permeable substrate such as a concrete structure where, upon curing, the resulting resin will heal and/or seal pores and/or small cracks in the substrate preventing or lessening its penetration by liquids.

Abstract: Crystalline propylene polymers having P.I. values lower than or equal to 3.7, and having, at an MFR (Melt Flow Rate) ranging from 600 to 1000 g/10 min., an Mw value from 100,000 to 60,000, and at a MFR ranging from 1000 to 2000 g/10 min., an Mz value higher than or equal to 140,000, are obtained by way of polymerization with specific supported catalysts.

Abstract: A catalyst composition for olefin polymerization and copolymerization which contains a transition metal complex with a bidentate or a tridentate ligand and a cocatalyst mixture containing dialkylaluminum halide and dialkylmagnesium.The transition metal complexes with bidentate ligands L have the empirical formula LMX.sub.2, LMXY or L.sub.2 M where M is Ti, V, Zr or Hf; X is an alkoxy group, an aryloxy group, or a halogen atom; Y is a mono- or double-bonded ligand different from X.The bidentate L ligands are described by general formulasZ--R--Z OR Z--R--W--R--Zwhere R is an alkylene group, a cycloalkylene group, an arylene group (unsubstituted or alkyl-substituted) or an alkylarylene group; W is CH.sub.2, O, S, N--R', or SiR'.sub.2 where R' is an alkyl or an aryl group; and Z is an oxygen atom, a sulfur atom, an N--H group or a C(.dbd.O)--O group.

Abstract: A hydrocarbon soluble drag reducing suspension is described as well as a process for obtaining the same. Process is directed toward producing a drag reducing product which is easily transportable, non-hazardous, easily handled and while providing a significant increase in drag reduction capability over existing commercial products. The suspension is preferably substantially solvent-free.

Abstract: Crystalline propylene polymers having P.I. values lower than or equal to 3.7, and having, at an MFR (Melt Flow Rate) ranging from 600 to 1000 g/10 min., an Mw value from 100,000 to 60,000, and at a MFR ranging from 1000 to 2000 g/10 min., an Mz value higher than or equal to 140,000, are obtained by way of polymerization with specific supported catalysts.

Abstract: Metallocene catalyst systems for the polymerization of C.sub.2 -C.sub.10 -alkenes are obtainable by deactivation of a preactivated metallocene catalyst system which contains, as active components, a metallocene complex of a metal of subgroup IV or V of the Periodic Table and an oligomeric alumoxane compound and, if required, subsequent reactivation.

Abstract: A catalyst precursor composition comprises the reaction product of a cation exchange resin containing trityl carbonium ions contacted with a metallocene. The process of producing the reaction product of a cation exchange resin containing trityl carbonium ions contacted with a metallocene comprises(1) providing a cation exchange resin which has cations,(2) contacting the cation exchange resin with a solution comprising a trityl halide complex and solvent therefor to form an intermediate; and(3) contacting the intermediate with a metallocene, preferably a zirconocene salt.The resulting composition can be used to form ethylene resins in an alumoxane free system.

Abstract: A process is provided for forming an electrically conductive polymer of a pyrrole monomer, optionally substituted at the 3- and 4- positions. The process comprises dispersing a polymerization initiator selected from the group consisting of anhydrous halides of iron, cobalt or nickel (Group VIII metal) in an anhydrous liquid reaction medium and, adding essentially pure pyrrole monomer, or a solution of the monomer in the liquid at a temperature in the range from about -20.degree. C. to below about the boiling point of the solution. The pyrrole polymer so formed is a Group VIII metal halide counterion, and a conductor having a conductivity in the range from about 1 to about 150 ohm.sup.-1 cm.sup.-1 ("S/cm" for brevity), or a semiconductor having a conductivity in the range from about 10.sup.-3 to about 1 S/cm, depending upon the particular structure of the monomer, the ratio of the initiator to pyrrole monomer, and the molecular weight of the polymer formed.

Abstract: Polymerizable compositions comprising (a) hydroxypropyl methacrylate; (b) a C.sub.8 to C.sub.10 alkyl ester of acrylic or methacrylic acid; (c) a crosslinking agent; (d) a promoter; and (e) a free-radical initiator.

Abstract: A system for combining the components of a multi-component catalyst system comprising at least four chambers with flow passageway means connecting the chambers in series. The catalyst components can include a transition metal, an electron donor and a co-catalyst, which are sequentially mixed together in the course of formulating a Ziegler-type system to be charged to an olefin polymerization reactor. The passages between the second and third chambers have valves. Each of the second and fourth chambers is provided with an inlet opening separate from the interconnecting flow passages and a vent opening separate from the inlet openings and the interconnecting flow passages. The chamber also has an outlet opening. This system also has flushing inlet passages for each of the four chambers which are connected to a manifold adapted to be connected to a source of nitrogen.

Abstract: A process for regulating the reaction in the preparation of polyisobutylene by polymerizing isobutylene at from -130.degree. to 0.degree. C. in the presence of from 0.01 to 1.0% by weight of a Friedel-Crafts catalyst, from 0.0001 to 0.1% by weight of a molecular weight regulator, and a low boiling point solvent that is inert under the reaction conditions, the percentages by weight being based in each case on isobutylene, in which the solvent that has evaporated in the polymerization is continuously removed, liquefied and recycled in the liquid state to the polymerization zone, wherein vinyl ethers are used as molecular weight regulators. The vinyl ether used in this process acts both as an accelerator and an inhibitor of the cationic polymerization.

Abstract: The invention relates to moldable, radically polymerizable multicomponent mixtures, which may even be present in the form of storable multicomponent systems, containingethylenically unsaturated, polymerizable compounds, if desired in admixture with soluble and/or insoluble fillers and/or other auxiliaries, andan activator system initiatable by contact with oxygen,characterized in that, in their in-use form, the multi-component mixtures are present as at leastly slightly thickened material and contain an activator system based on the following principal components which can be initiated by contact with ambient air:N-alkyl-substituted tert.-arylamines containing at least one aliphatic CH bond in the .alpha.-position,metal compounds at least partly soluble in the system to accelerate the drying of unsaturated oils, andweakly acidic carboxylic acids having pK.sub.s values no lower than about 0.9.In their in-use form, the multicomponent mixtures preferably have a minimum viscosity of at least about 50 to 100 mPa.

Abstract: A composition for scavenging oxygen is disclosed. The composition comprises an ethylenically unsaturated hydrocarbon and a transition metal catalyst and can be incorporated into various types of layers. It is preferable that the composition be incorporated into layers of multilayered articles used for packaging oxygen-sensitive products such as food products.

Abstract: Processes for the synthesis of several new carbene compounds of ruthenium and osmium are provided. These novel complexes function as stable, well-defined catalysts for the metathesis polymerization of cyclic olefins.

Abstract: Polymers of itaconic acid are formed at high conversion by an aqueous polymerization process of partially neutralized monomer solution, water, polyvalent metal ion and initiator.Polymers produced according to the process of the invention are useful as detergent additives, scale inhibitors and removers, sequestrants, yarn sizers, deflocculating agents, de-inking agents, suspending agents and dispersing agents.

Abstract: A propylene (co) polymer terminated with a reactive group and a process for the preparation of the same.A graft copolymer having a specific side chain and a process for the preparation of the same.The propylene (co) polymer is usable as a radial- or ion-polymerizable propylene macromonomer or as an intermediate for the preparation of a block polymer. Examples of the application thereof include compatibizing agent for polymers, light- or laser-curable plastic, viscosity index and surface modifier.The graft copolymer is useful as a surface modifier or compatibilizing agent for polypropylene or a dispersant for fillers.