Abstract: A gas phase fluidized bed process is described for producing ethylene polymers having improved processability and an MWD of less than about 2.9. Multiple reactors in series or parallel may be used to produce in-situ blended polymers. Each reactor can separately have a constrained geometry catalyst or a conventional Ziegler-Natta catalyst as needed for obtaining in-situ blended polymer with the desired properties as long as there is a constrained geometry catalyst in at least one reactor. Olefin polymers can be produced according to this invention which have low susceptibility to melt fracture, even under high shear stress conditions.

Abstract: Alicyclic nortricyclene polymers and co-polymers suitable for deep ultraviolet microlithography applications.

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 cross-linkable polymeric casting composition including an effective amount ofA: an acrylic or methacrylic monomer which provides high rigidity and low colour dispersion (High Abbe number) to the final product;B: a di- or polythio compound;C: a di- or polyvinyl monomer; and optionallyD: a polymerisable comonomer.

Abstract: The present invention relates to a catalyst system based on monoazadiene metal complexes of the formula ##STR1## and a co-catalyst suitable for activating the metal complex, and to the use of the catalyst system for the polymerization of unsaturated compounds, especially for the polymerization and copolymerization of olefins and/or dienes.The novel catalyst system is characterised in particular by its ease of access, its lack of sensitivity to external influences and its ease of handling.

Abstract: Functionalized bicyclic (meth)acrylates with norbornenyl or norbornadienyl groups are described, which may be cured with radicals at room temperature and are particularly suitable as an adhesion-promoting component of dental adhesives.

Abstract: A method of preparing amorphous copolymers of ethylene and at least one norbornene (NB)-type comonomer is disclosed. These polymers may be random or alternating depending on the choice of catalyst and/or the relative ratio of the monomers used. This method comprises polymerizing said monomers in a diluent or in bulk in the presence of a neutral nickel catalyst which may be represented by the formula ##STR1## wherein Y may be a saturated or unsaturated hydrocarbyl chain, X may be oxygen or sulfur, E may be phosphorus, arsenic, antimony, oxygen or nitrogen, R and R' independently each is hydrogen or a hydrocarbyl group, L is a ligand containing a heteroatom P, N or O or L and R together with L may form part of a chelating structure in which case L is an ethylenic double bond.

Abstract: Disclosed is a process for preparing an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer comprising random copolymerizing (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene in the presence of a metallocene catalyst containing a specific metallocene compound. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer prepared by the process has such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the .alpha.-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 95/5 ?(a)/(b)!, (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (.eta.) is more than 0.1 dl/g and less than 8.0 10 dl/g, (iv) the intensity ratio D of T.alpha..beta. to T.alpha..alpha. in the .sup.13 C-NMR spectrum, T.alpha..beta./T.alpha..alpha., is not more than 0.5, (v) the B value is 1.00 to 1.50, (vi) the glass transition temperature Tg is not higher than -50.degree. C., and (vii) the ratio g.eta.

Abstract: Silyl substituted polymers of polycycloolefins are provided as well as catalyst systems for their preparation. The polymers of the invention include polycyclic repeat units that contain pendant silyl functional groups represented by the following formulae: ##STR1## wherein A is a divalent radical selected from the following structures: ##STR2## R.sup.9 independently represents hydrogen, methyl, or ethyl; R.sup.10, R.sup.11, and R.sup.12 independently represent halogen, linear or branched (C.sub.1 to C.sub.20) alkyl, linear or branched (C.sub.1 to C.sub.20) alkoxy, linear or branched (C.sub.1 to C.sub.20) alkyl carbonyloxy, (C.sub.1 to C.sub.20) alkyl peroxy, and substituted or unsubstituted (C.sub.6 to C.sub.20) aryloxy; R.sup.10, R.sup.11, and R.sup.12 together with the silicon atom to which they are attached form the group: ##STR3## n is a number from 0 to 5; and n' is 0 or 1; and n" is a number from 0 to 10.

Abstract: The invention relates to a process for the preparation of a polymer from ethylene, an .alpha.-olefine and optionally a diene, according to which these monomers are polymerized under the influence of a metallocene catalyst, the polymerization taking place in the presence of a catalyst comprising a specific 2-indenyl metallocene, resulting in a bimodal, elastomeric polymer with a molecular weight distribution of more than 3.5, under such reaction conditions that the amount of water in the polymerization medium is smaller than 0.5 ppm.The invention also relates to polymers with a specific branching index.

Abstract: Resins which are the copolymers of an alpha-olefin, a cyclic olefin, and an aromatic-group-containing monomer are provided. The cyclic olefins retain their cyclic structures and the aromatic-group-containing monomers retain their aromatic structures after copolymerization into the resin product. Methods for production of the new resins in the presence of a metallocene catalyst system are also provided. New adhesive compositions containing the resin and articles using the new adhesive compositions are also part of the invention.

Abstract: Substantially random interpolymers comprising (1) ethylene, (2) one or more aromatic vinylidene monomers or hindered aliphatic or cycloaliphatic vinylidene monomers, and (3) one or more olefinic monomers having from 3 to about 20 carbon atoms. These interpolymers find utility as film, or as sheet or as a component of a multilayered structure, as fabricated articles, as foams, fibers or emulsions and as adhesives, in adhesive formulations and in sealant compositions.

Abstract: The subject invention provides a thermoset elastomer comprising a crosslinked pseudorandom or substantially random interpolymer of: (a) from 15 to 70 weight percent of monomer units derived from at least one a-olefin, (b) from 30 to 70 weight percent of monomer units derived from at least one vinylidene aromatic compound, and (c) from 0 to 15 weight percent of monomer units derived from at least one diene. The subject invention further provides a thermoplastic vulcanizate comprising the thermoset elastomers of the invention as provided in a thermoplastic polyolefin matrix. The subject invention further provides processes for preparing the inventive thermoset elastomers and thermoplastic vulcanizates, as well as parts fabricated therefrom. The inventive materials have a superior balance of properties, as compared to EPM and EPDM based materials. The subject invention also pertains to foams and methods for their preparation.

Abstract: Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by coordination polymerization by means of contacting at least one geminally disubstituted olefin monomer and ethylene, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl, heteroatom-containing Group 4 transition metal catalyst component.

Abstract: Photosensitive polymers are represented by the formula: ##STR1## wherein R1 is selected from the group consisting of hydrogen and methyl; R2 is selected from the group consisting of aliphatic hydrocarbon groups having from 6 to 20 carbon atoms; R3 is selected from the group consisting of a t-butyl group and a tetrahydropyranyl group, and m and n are selected such that the ratio m/(n+m) ranges from 0.1 to 0.9. Photoresist compositions comprise the photosensitive polymers and photoacid generators.

Abstract: An improved hydrocarbon tolerant, aerosol hair spray resin composition includes a fixative polymer which is a tetrapolymer consisting essentially of (1) vinyl acetate, (2) vinyl neodecanoate or vinyl neononanoate, (3) monoisobutyl maleate and (4) N-t-butyl acrylamide, N-t-octyl acrylamide, or isobornyl (meth)acrylate, in a molar ratio from 10:10:15:1 to 26:1:15:1, preferably in a molar ratio of 12.5:7.5:15:1, exhibits advantageous small spray particle size, short tack and drying times, and hydrolytic stability, which are the desired performance characteristics on hair.

Abstract: The invention provides inherently tacky PSAs that exhibit excellent adhesion to paper, corrugated board and low-energy surfaces, and comprise an acrylic emulsion polymer formed from (a) a plurality of monomers comprising, based on the total weight of monomers, (i) 9 to 40% isobornyl acrylate and (ii) 50 to 91% of one or more alkyl acrylates; (b) at least one initiator; and at least one emulsifier. In an alternate embodiment, the polymer is formed by solvent polymerization, without an emulsifier. A method for making such PSAs is also provided. In one embodiment, polymerization initiators are added to a monomer emulsion in a stepped feed.

Abstract: Disclosed is a process for preparing an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer comprising random copolymerizing (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene in the presence of a metallocene catalyst containing a specific metallocene compound. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer prepared by the process has such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the .alpha.-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 95/5 ?(a)/(b)!, (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (.eta.) is more than 0.1 dl/g and less than 8.0 10 dl/g, (iv) the intensity ratio D of T.alpha..beta. to T.alpha..alpha. in the .sup.13 C-NMR spectrum, T.alpha..beta./T.alpha..alpha., is not more than 0.5, (v) the B value is 1.00 to 1.50, (vi) the glass transition temperature Tg is not higher than -50.degree. C., and (vii) the ratio g.eta.

Abstract: Motor vehicle brake parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the brake parts based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have improved resistance to elevated temperature properties, and good heat aging characteristics, compared to for instance ethylene, alpha-olefin, non-conjugated diene elastomers (where the diene is other than vinyl norbornene) or styrene butadiene rubbers.

Abstract: Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R.sub.1 =R.sub.2 (R.sub.3)(R.sub.4), where R.sub.1 is CH.sub.2, R.sub.2 is C, and R.sub.3 and R.sub.4 are, independently, essentially linear hydrocarbyl groups having from 1 to 30 carbon atoms, or more, and containing one carbon atom bound directly to R.sub.2. The copolymers can be prepared by coordination polymerization by means of contacting at least one geminally disubstituted olefin monomer and ethylene, optionally with one or more other coordination polymerizable monomers, with a catalyst system comprising a monocyclopentadienyl, heteroatom-containing Group 4 transition metal catalyst component.

Abstract: Addition polymers derived from norbornene-functional monomers are terminated with an olefinic moiety derived from a chain transfer agent selected from a compound having a terminal olefinic double bond between adjacent carbon atoms, excluding styrenes, vinyl ethers, and conjugated dienes and at least one of said carbon atoms has two hydrogen atoms attached thereto. The addition polymers of this invention are prepared from a single or multicomponent catalyst system including a Group VIII metal ion source. The catalyst systems are unique in that they catalyze the insertion of the chain transfer agent exclusively at a terminal end of the polymer chain.

Abstract: A hydroxy-functional polymer having a number average molecular weight, as determined by gel permeation chromatography, of from about 1800 to about 2700 and which consists essentially of polymerized monomers of 10-40% by weight, based on the total weight of the polymer, styrene; 20-55% by weight isobornyl methacrylate; and 20-55% by weight hydroxypropyl methacrylate; where the total of the monomers equals 100% are disclosed. The polymers are especially useful in combination with polyisocyanates as clearcoats in clearcoat/basecoat coating applications.

Abstract: An olefin polymer is prepared by homopolymerizing an olefin or copolymerizing two different olefins or an olefin and another polymerizable unsaturated compound in the presence of a polymerization catalyst containing (A) a transition metal compound represented by the formula (I):CpML.sub.x-1 (I)wherein M is a metallic element of Groups 3 to 10 of the Periodic Table or a metallic element of the lanthanide series; Cp is a cyclic compound group having a cyclopentadienyl skeleton of 5 to 30 carbon atoms; L is R', OR', SR', SO.sub.3 R'N'R'R", PR'R", wherein R' and R" are each a C.sub.1-20 hydrocarbon group or a silyl group, NO.sub.2, a halogen atom, a 1-pyrrolyl group or a 1-pyrrolidinyl group, with the proviso that at least one of the L groups is OR', SR', N'R'R" or PR'R", wherein R' and R" are each a C.sub.

Abstract: Disclosed herein is a process for the polymerization of ethylene, norbornenes and styrenes, by contacting in solution a selected nickel compound and a selected compound which is or can coordinated to the nickel with the olefin(s). The polymers produced are useful for films and molding resins.

Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(c) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B.

Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(c) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a surface provided with 1.5.+-.0.25 mg/in.sup.2 oil is greater than zero after a 10 second dwell at room temperature as measured according to Test Procedure B.

Abstract: Addition polymers containing functionally substituted polycyclic repeat units are prepared in the presence of a single or multicomponent catalyst system containing a palladium metal ion source. The catalysts are not poisoned by functional substituents and show good catalytic activity for polymerizing both endo and exo isomers of the substituted monomers. Optionally, the polymers are terminated with olefinic end groups.

Abstract: Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization catalysts, methods of use, and novel polymers formed thereby, including ElPE resins and pseudo-random copolymers, are disclosed and claimed.

Abstract: This invention relates to a process for polymerizing olefins using a catalyst composed of a transition metal catalyst component, an aluminoxane component and an organoaluminum component. In the process of this invention, the catalyst exhibits excellent polymerization activity with the use of a small amount of the aluminoxane xane. The polymerization process gives olefin polymers having a narrow molecular weight distribution and by the copolymerization of two or more olefins, gives olefin copolymers having a narrow molecular weight distribution and a narrow composition distribution.

Abstract: A process for producing an alpha-olefin polymer, which comprises polymerizing an alpha-olefin in the presence of a catalyst formed from (A) a transition metal compound comprising (A-1) a transition metal atom, (A-2) a hetero atom-containing ligand containing a heteroatom selected from oxygen, sulfur, nitrogen and phosphorus capable of forming a bond with the transition metal atom, and (A-3) a ligand having a conjugated .pi. electron through which the ligand can be bonded to the transition metal atom (A-1), and (B) an aluminoxane. The transition metal compound may be pre-treated with (C) an organometallic compound, or (D) a halogen-containing inorganic compound of an element of Group III, IV or V of the periodic table.

Abstract: Motor vehicle brake parts and power transmission belt based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the brake parts and the power transmission belt based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have improved resistance to elevated temperature properties, and good heat aging characteristics, compared to for instance ethylene, alpha-olefin, non-conjugated diene elastomers (where the diene is other than vinyl norbornene) polychloroprene, or styrene butadiene rubbers.

Abstract: Disclosed is an ethylene copolymer rubber which is a random copolymer rubber of (a) ethylene, (b) an .alpha.-olefin of 3 to 20 carbon atoms, (c) a nonconjugated polyene containing, in one molecule, one carbon-to-carbon double bond polymerizable by a metallocene catalyst among carbon-to-carbon double bonds, and (d) a nonconjugated polyene containing, in one molecule, two carbon-to-carbon double bonds polymerizable by the metallocene catalyst among carbon-to-carbon double bonds. The ethylene copolymer rubber has excellent moldability, high vulcanization rate, good mechanical properties such as high vulcanization strength, excellent low-temperature flexibility and thermal aging resistance. Also disclosed is a process for preparing the ethylene copolymer rubber with high activity, high conversion ratio of .alpha.-olefin and high random copolymerizability.

Abstract: Disclosed is a process for preparing an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer comprising random copolymerizing (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene in the presence of a metallocene catalyst containing a specific metallocene compound. The ethylene-.alpha.-olefin-nonconjugated polyene random copolymer prepared by the process has such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the .alpha.-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 95/5 ?(a)/(b)!, (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (.eta.) is more than 0.1 dl/g and less than 8.0 10 dl/g, (iv) the intensity ratio D of T.alpha..beta. to T.alpha..alpha. in the .sup.13 C-NMR spectrum, T.alpha..beta./T.alpha..alpha., is not more than 0.5, (v) the B value is 1.00 to 1.50, (vi) the glass transition temperature Tg is not higher than -50.degree. C., and (vii) the ratio g.eta.

Abstract: The present invention relates to a polynuclear metallocene compound of the formula I ##STR1## a process for their preparation and their use as a catalyst for olefin polymerization.

Abstract: The invention discloses methods of preparing copolymers from norbornene-type monomers and cationically polymerizable monomers or polymers from catalytically polymerizable monomers by employing Group VIII transition metal ion source in a solvent for said monomers at a temperature in the range from -100.degree. C. to 120.degree. C. Also disclosed are copolymers from norbornene-type monomers and catalytically polymerizable monomers.

Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5.

Abstract: Diene modified polymers are provided as well as methods for preparing the same. The polymers have from 3-8 carbon atoms, from about 0.00005 to about 5 mole percent diene based on the total weight of the polymer. The polymers are essentially gel-free and exhibit enhanced melt strength and shear thinning behavior.

Abstract: The present invention provides a vinylmonomer represented with the following general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a methyl group, R.sup.2 represents a dihydric, bridged cyclic hydrocarbon group having a carbon number in the range of 7 to 13 both inclusive, R.sup.3 represents a group to be decomposed by acid or a hydrogen atom, X represents an alkylene group or a coupling group composed of an oxygen-carbon bond, and Y represents an alkylene group or a coupling group composed of a carbon-carbon bond. A photoresist obtained by polymerizing a monomer in accordance with the invention has a high transparency to FUV having a wavelength of at greatest 220 nm, high sensitivity and resolution to FUV, and a high dry etching resistance, and hence is suitable for exposure light such as FUV having a wavelength of at greatest 220 nm and, in particular, ArF excimer laser.

Abstract: A soil stabilization polymer grout composition comprising (a) a C.sub.8 to C.sub.10 alkyl ester of acrylic or methacrylic acid; optionally,(b) an ester of acrylic or methacrylic acid having a T.sub.g of greater than about 50.degree. C.; (c) a crosslinking agent; and (d) a free-radical initiator. The composition when filled to provide a composite provides a hardened material which is re-enterable.

Abstract: Ethylene, alpha-olefin, non-conjugated bicyclic diene elastomeric polymers and/or polymer blends when compounded and formed into a calendered sheet, show surprising improvements for the combination in both green strength and peel adhesion in the unvulcanized state. Such green strength and peel adhesion provide benefits during calendering operations and subsequent joining of calendered sheets, while the compounded elastomeric polymers are in their green or unvulcanized state.

Abstract: Novel tackifier resins having a M.sub.n of 5,000 or less and a T.sub.g of 0.degree. C. or above are produced by combining a metallocene catalyst with an alpha-olefin and a cyclic monomer. New adhesives are produced by blending the novel tackifier with a base polymer.

Abstract: There is provided a process for the production of a cycloolefin copolymer which comprises copolymerizing an .alpha.-olefin having 2 or more carbon atoms and a specific cycloolefin in the presence of a specific metallocene type catalyst in a solvent mixture of a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.7 [(cal/cm.sup.3).sup.1/2 ] or more and a hydrocarbon solvent having a solubility parameter (value of .delta.) of 7.5 [(cal/cm.sup.3).sup.1/2 ] or less as a polymerization solvent. A cycloolefin copolymer having a high molecular weight can be produced in a high concentration by this process at a high yield.

Abstract: A rubber composition excellent in shape-retainability also in processibility, compression set and the like, which comprises a single ethylene-.alpha.-olefin-non-conjugated diene copolymer which has (1) a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 80 to 200, (2) a weight average molecular weight/number average molecular weight ratio of 6 or more as measured by a gel permeation chromatography (GPC), and (3) a stress-retention of 0.2 or more after 100 seconds at 80.degree. C. in a compression type stress-relaxation test.

Abstract: This invention is a solution process for the preparation of high molecular weight ethylene-.alpha.-olefin-diolefin copolymers comprising contacting ethylene, one or more .alpha.-olefin monomer, and optionally one or more diene monomer, with a catalyst system at a polymerization temperature at or above about 80.degree. C., ethylene, one or more .alpha.-olefin monomer, and optionally one or more diene monomer, with a catalyst system comprising an unbridged Group 4 metal compound having a bulky monocyclopentadienyl ligand, a uninegative bulky Group 15 ligand and two uninegative, activation reactive ligands and a catalyst activator compound. The process can be advantageously practiced a reaction temperature of at least 80.degree. C., most preferably above 100.degree. C., to achieve high number average molecular weight polymer having high .alpha.-olefin monomer and diene monomer contents with high diene conversion rates.

Abstract: Olefins are polymerized by the use of catalysts comprising biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes wherein the diene is bound to the transition metal either in the form of a .sigma.-complex or a .pi.-complex in combination with activating cocatalysts.

Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(c) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a surface provided with 1.5.+-.0.25 mg/in.sup.2 oil is greater than zero after a 10 second dwell at room temperature as measured according to Test Procedure B.

Abstract: Copolymers of olefinically unsaturated monomers, wherein at least one of the monomers is an isomer mixture of a cyclic or polycyclic olefinically unsaturated compound, which mixture contains a mass fraction from 8 to 50 per cent of at least one isomer of the main component in addition to this main component. The copolymers are useful, for example, in coating compositions.

Abstract: Disclosed is an ethylene-.alpha.-olefin-nonconjugated polyene random copolymer which is a random copolymer of (a) ethylene, (b) an .alpha.-olefin of 3 or more carbon atoms and (c) a nonconjugated polyene, and has such properties that (i) the copolymer contains (a) units derived from ethylene and (b) units derived from the .alpha.-olefin of 3 or more carbon atoms in a molar ratio of 40/60 to 95/5 ((a)/(b)), (ii) the iodine value is in the range of 1 to 50, (iii) the intrinsic viscosity (.eta.), as measured in decahydronaphthalene at 135.degree. C., is in the range of 0.1 to 8.0 dl/g, and (iv) the ratio g.eta.* of the intrinsic viscosity (.eta.) of the copolymer defined above to the intrinsic viscosity (.eta.).sub.blank of a linear ethylene-propylene copolymer having the same weight-average molecular weight as the ethylene-.alpha.-olefin-nonconjugated polyene random copolymer and having an ethylene content of 70% by mol, (.eta.)/(.eta.).sub.blank, is in the range of 0.2 to 0.

Abstract: The glue crayons comprising acrylate polymers, tackified acrylate polymers, acrylate polymers containing specific, pendent, macromeric units, acrylate polymers containing high chain length alkyl (meth)acrylate monomers, acrylate polymers containing both macromeric and high chain length alkyl groups and acrylate polymers containing crystalline additives and includes (a) an acrylate-based adhesive polymer, (b) a tackifier; (c) a crystalline additive; and (d) at least one filler.

Abstract: A pressure sensitive adhesive that includes the polymerization product of:(a) 25-97 parts by weight of an acrylic acid ester of a monohydric alcohol whose homopolymer has a T.sub.g less than 0.degree. C.;(b) 3-75 parts by weight of a non-polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of no greater than 10.50 and a T.sub.g greater than 15.degree. C.; and(c) 0-5 parts by weight of a polar ethylenically unsaturated monomer whose homopolymer has a solubility parameter of greater than 10.50 and a T.sub.g greater than 15.degree. C. The relative amounts of the acrylic acid ester, the non-polar ethylenically unsaturated monomer, and the polar ethylenically unsaturated monomer are chosen such that the 90.degree. peel adhesion of the pressure sensitive adhesive to a polypropylene surface is at least 2 lbs/0.5 in. after a 72 hour dwell at room temperature as measured according to Test Procedure B.