КАУЧУКИ С РЕГУЛИРУЕМЫМ СОДЕРЖАНИЕМ МЕТАЛЛСОДЕРЖАЩИХ АНТИАГЛОМЕРАНТОВ

ОСОБО ЧИСТЫЙ КАУЧУК

UNINHIBITED WATER-SWELLABLE CLAY COMPOSITION

Verglazung mit einer activen thermische, elektrische und/oder elektrochemische Einheit

PROCEDURE FOR THE PRODUCTION OF A BUTYL RUBBER MASS

PROCEDURE FOR THE PRODUCTION OF A BUTYL RUBBER MASS

CONTAINER AND USE OF CATCH SEALS FOR THESE CONTAINERS

SEALS ELEMENT WITH A WATER-REJECTING ADMIXTURE

COMPRESSION-RESISTANT WATER-SWELLABLE RUBBER COMPOSITION AND WATERTIGHT SEALING MATERIAL COMPRISING THE SAME

CURABLE SEALANT TWO-COMPONENT COMPOSITION

A curable and solventless sealant two-component composition consists essentially of a mixture of (a) a mixture of about 100 parts of a low molecular weight elastomeric isocyanate terminated prepolymer, having from about 3.5 to about 4.5% NCO content, from about 250 parts to about 400 parts of a medium process oil having a Brookfield viscosity at 22.degree.C. of about 10 to 500 cps, and from about 50 parts to about 70 parts of an uncured butyl rubber having a Staudinger molecular weight of 5,000 to 15,000, and, (b) a mixture of from about 150 parts to about 250 parts of a polyol having a molecular weight of from 400 to 5,000 and about 0.8 milliequivalent per gram hydroxyl, from about 40 to about 65 parts of an uncured butyl rubber having a Staudinger molecular weight of 5,000 to 15,000, from about 225 to about 275 parts of a medium process oil as in (a) and from about 0.1 to about 10.0 parts of a catalyst for the reaction of the prepolymer and the polyol; components (a) and (b) are individually ...

ELASTOMERIC SEALING GASKET ASSEMBLY AND ITS METHOD OF MANUFACTURE

An elastomeric sealing gasket assembly comprising a sealing compound layer between a removable carrier paper and a flexible cover film can be kept permanently elastic and, at the same time, withstand considerable surface pressure by embedding substantially incompressible spacers in the sealing layer.

CONTAINERS AND COMPOSITIONS FOR SEALING THEM

A container system for beer formed of a bottle body, a cap and sealing gasket formed of a blend of butyl rubber and one or more thermoplastic polymers. Preferably, the butyl rubber is present in an amount of from about 20 to about 60% by weight of the composition and the one or more thermoplastic polymers are present in an amount from about 40% to about 80% by weight of the composition. The system provides good sealing properties and prevents oxygen, and chlorinated substances such as chlorinated phenols or anisoles, that may be present in the packaging, from entering the bottle. WPCAB/ID25/15-18/6-9 ...

GLAZING HAS SYSTEM THERMICALLY, ELECTRICALLY AND/OR ELECTROCHEMICALLY CREDIT

COMPOSITION D'ETANCHEITE ET COMPOSITION ET BANDE ADHESIVES POUR MEMBRANES DE COUVERTURE

L'INVENTION CONCERNE UNE COMPOSITION D'OBTURATION ETANCHE A BASE DE CAOUTCHOUC BUTYLE. ELLE COMPREND DU CAOUTCHOUC BUTYLE, UN AGENT DE RETICULATION DE CE CAOUTCHOUC BUTYLE, UN ACTIVATEUR DE RETICULATION, AU MOINS UN AGENT D'ADHESIVITE COMPATIBLE AVEC LE CAOUTCHOUC BUTYLE, AU MOINS 2 PARTIES DE NOIR DE CARBONE POUR 100PARTIES DE CAOUTCHOUC BUTYLE, DE L'OXYDE DE ZINC ET UN CONSTITUANT CONTENANT DU SOUFRE. LA COMPOSITION AINSI OBTENUE PEUT NOTAMMENT ETRE APPLIQUEE SUR LA SURFACE INTERIEURE D'UN PNEUMATIQUE 10 AFIN DE FORMER UNE COUCHE 24 EMPECHANT LE PNEUMATIQUE 10 DE SE DEGONFLER EN CAS DE CREVAISON. DOMAINE D'APPLICATION: PNEUMATIQUES POUR VEHICULE, MATERIAUX DE COUVERTURE, ETC.

Elastomer seal for aerosol contg. solvent

Valve or pump joint for sealing fluid product dispenser is made from one or more selected elastomer materials

Joint de valve ou de pompe pour réaliser l'étanchéité d'un dispositif de distribution de produit fluide comportant une valve ou une pompe montée sur un réservoir de produit, caractérisé en ce que ledit joint comprend un ou plusieurs des matériaux élastomères suivants : (a) un nitrile hydrogéné (HNBR) (b) un polyoctène éthylène (POE) (c) un butyl ou halobutyl.

Glass casing

L'invention concerne un vitrage comprenant au moins un, notamment deux substrats rigides (1, 2, 3) ou semi-rigides transparents sur lequel ou entre lesquels est disposé au moins un système (11) thermiquement, électriquement et/ou électrochimiquement actif, et qui est muni au moins d'un joint d'étanchéité en contact avec au moins un des matériaux thermiquement, électriquement ou électrochimiquement actifs dudit système. Le joint présente une conductivité électrique inférieure à 10**-4 Ohm**-1.cm**-1 et/ou contient des composés essentiellement dépourvus d'espèces ou de fonction chimiques susceptibles de diffuser hors du joint et réagir chimiquement ou électrochimiquement avec au moins l'un desdits matériaux dans la plage de tension et/ou de température de fonctionnement du système.

SEALING COMPOSITION AND COMPOSITION AND ADHESIVE STRIP FOR ROOFING MEMBRANES

SEALING MATERIAL FOR MECHANICALLY SEALING CLOSURES

The present invention pertains to sealing materials for mechanically sealing closures, made from polymer mixtures comprising the following: A) at least one metallocene-free polyolefin; B) a polypropylene random copolymer; C) (optionally) a synthetic rubber; D) (optionally) fillers; and E) (optionally) further additives. Also disclosed are processes for producing mechanically sealing closures using the claimed polymer mixture as an inner inlay on the closure surface, and mechanically sealing closures of this type.

Containers and compositions for sealing them

A container system for beer formed of a bottle body, a cap and sealing gasket formed of a blend of butyl rubber and one or more thermoplastic polymers. Preferably, the butyl rubber is present in an amount of from about 20 to about 60% by weight of the composition and the one or more thermoplastic polymers are present in an amount from about 40% to about 80% by weight of the composition. The system provides good sealing properties and prevents oxygen, and chlorinated substances such as chlorinated phenols or anisoles, that may be present in the packaging, from entering the bottle.

Non-aqueous water-displacing sealant composition for vehicle glass joints

A non-aqueous sealant composition particularly adapted for use in the installation or sealing of fixed glass in vehicles. The composition has a thermoplastic rubber base, suitably modified by plasticizers, tackifyers and a cationic surfactant to provide a sealant system which displaces water from a wetted substrate to which it is applied, permitting it to be utilized under either wet or dry conditions.

Curable sealant two-component composition containing butyl rubber derived from isoolefin and open-chain conjugated diolefin

Curable sealant two-component composition, each component being individually storage-stable and containing oil-extended low molecular weight uncured butyl rubber, said components being mixed together in a volume ratio of from about 1.0 to 1.0.

Pumpable desiccated mastic

ОСОБО ЧИСТЫЙ КАУЧУК

Изобретение относится к эффективному способу получения водной суспензии, включающей множество частиц сополимера, суспендированных в ней, к водной суспензии и частицам сополимера, которые можно использовать для получения полимерных изделий. Способ получения водной суспензии заключается в том, что на стадии (а) получают реакционную среду, включающую органический разбавитель и, по меньшей мере, два мономера, при условии, что, по меньшей мере, один мономер является изоолефином и, по меньшей мере, второй мономер является мультиолефином. На стадии (b) осуществляют полимеризацию мономеров в реакционной среде в присутствии инициирующей системы с образованием среды, включающей сополимер, органический разбавитель и, необязательно, остаточные мономеры. На стадии (с) полученная среда контактирует с водной средой, которая включает, по меньшей мере, одно соединение с Нижней Критической Температурой Растворения (НКТР-соединение) с порогом осаждения от 0 до 100°С. Затем удаляют органический растворитель ...

КАУЧУКИ С РЕГУЛИРУЕМЫМ СОДЕРЖАНИЕМ МЕТАЛЛСОДЕРЖАЩИХ АНТИАГЛОМЕРАНТОВ

Изобретение относится к способу получения водной суспензии, включающей частицы сополимера, и к водной суспензии, получаемой этим способом. Способ приготовления водной суспензии включает частицы сополимера, суспендированные в ней, и стадии приготовления. Готовят реакционную среду, включающую органический разбавитель и, по меньшей мере, два мономера, при условии, что, по меньшей мере, один мономер является изоолефином и, по меньшей мере, один мономер является мультиолефином. Проводят полимеризацию мономеров в реакционной среде в присутствии инициирующей системы с образованием среды, включающей сополимер, органический разбавитель и, необязательно, остаточные мономеры. Затем проводят контактирование среды с водной средой, включающей, по меньшей мере, одно соединение с Нижней Критической Температурой Растворения (НКТР), выбранные из метилцеллюлозы, гидроксипропилцеллюлозы, гидроксиэтилцеллюлозы, гидроксиэтилметилцеллюлозы, гидроксипропилметилцеллюлозы. После чего удаляют органический разбавитель ...

Verglazung mit einer activen thermische, elektrische und/oder elektrochemische Einheit

FLACHDICHTUNGSMATERIAL FÜR FLÜSSIGKEITSABDICHTUNG

Sealant and adhesive compositions

A sealant composition particularly suitable for vehicle tyres comprises a curable butyl rubber and one or more tackifiers, the tensile strength, elongation and cross-link density of the composition being adjusted to produce the necessary properties for tyre sealants. The composition may also be adapted for use in adhesive products for use in connection with membrane roofing materials. The composition may also include carbon black, zinc oxide, a sulphur component and a conventional cross-linking agent and activator.

CONTAINER CLOSURES AND PROCESSES OF MAKING THEM

CONTAINERS CONTAINING PACKING AND USE OF CATCH SEALS FOR THESE CONTAINERS

CATCH SEALS FOR CONTAINERS

ELASTOMERIC GASKET

UNINHIBITED WATER-SWELLABLE BENTONITE COMPOSITION

UNINHIBITED BENTONITE COMPOSITION The present invention relates to a nonhydrated bentonite intimately contacted with a polypropene, polybutene, or mixtures thereof to provide a formable and shapable non-aqueous bentonite composition particularly useful as a water barrier. The bentonite composition can be extruded in the form of a rope, rod, sheet or the like and is sufficiently tacky for adherence to a wall or conduit, floor or roof in areas of potential water flow to prevent the seepage of water through the bentonite composition. In one embodiment, the bentonite composition includes a polypropene and a polybutene and an elastomer, such as butyl rubber, having sufficient resilience to stretch or expand with the expanding bentonite upon hydration and to aid in maintaining the structural integrity and cohesiveness of the composition. In another embodiment, the composition comprises bentonite, an elastomer, and any plasticizer compatible with the elastomer.

WATER PROOFING COMPOSITIONS FOR CEMENT MORTAR OR CONCRETE

Water proofing compositions containing a reclaimed butyl rubber of used inner tube scraps as the active component have a high adhesion to cement mortar or concrete and are used for water proofing materials in buildings and civil engineering works.

NON-AQUEOUS WATER-DISPLACING SEALANT COMPOSITION FOR VEHICLE GLASS JOINTS AND THE LIKE

A non-aqueous sealant composition particularly adapted for use in the installation or sealing of fixed glass in vehicles. The composition has a thermoplastic rubber base, suitably modified by plasticizers, takifyers and a catoinic surfactant to provide a sealant system which displaces water from a wetted substrate to which it is applied, permitting it to be utilized under either wet or dry conditions.

TAMPA PARA VASILHAMES E PROCESSOS PARA SUA FABRICACAO

Sealing material composition comprising a mixture of oil-extended EPDM and butyl rubber

The present invention relates to a sealing composition material comprising a mixture of paraffin oil-extended ethylene-propylene-diene (EPDM) and butyl rubber for use in coaxial connection cables. Additional components can be added to the present invention, such as, for example: tackifier (polyterpene) resin, hydrocarbon resin, polyisobutylene (PIB) and, optionally, fillers and carbon black. The material of the present inventions exhibit a high electrical resistance, good conformability to uneven surfaces, good elasticity at low temperatures and resistance to flowability at high temperatures.

Water proofing compositions for cement mortar or concrete and method employing same

Water proofing compositions containing a reclaimed butyl rubber of used inner tube scraps as the active component have a high adhesion to cement mortar or concrete and are used for water proofing materials in buildings and civil engineering works.

SEAL FOR A DISPENSING APPARATUS

The present invention relates to a seal for a valve for use in a pharmaceutical dispensing device, which seal is formed from an elastomeric composition comprising: (a) one or more elastomers; and (b) a cross-linking agent comprising an aliphatic dialkyl peroxide and/or an aliphatic perketal peroxide.

Pneumatic Vehicle Tire

To improve the sealing effect, the material ring (10) arranged on the sealant (8) is closed-cell and airtight.

DICHTUNGSMATERIAL

Dichtungselement mit einer wasserabweisenden Beimengung

Dichtmasse/Dichtstoff

Die Erfindung betrifft eine/einen Dichtmasse/Dichtstoff zum Abdichtung von Spalten, Löchern, Fugen, Durchbrüchen oder Flächen mit einer elastischen oder plastischen Kunststoffmasse, wobei in die Kunststoffmasse ein Superabsorber in Form kleiner Partikel insbesondere in Form kleiner Kügelchen oder Pulver gleichmäßig masseverteilt eingemischt ist als Notfallabdichtung gegen ein Durchdringen einer Flüssigkeit insbesondere Wasser.

Butyl rubber sealant compsn. for use inside tyres - contains crosslinking agent e.g. quinoid or phenolic resin and tackifier, e.g. polybutene

A sealant compsn. for use in a tyre comprises the reaction prod. of a butyl rubber present solely as a copolymer of average viscosity mol. wt. above 100,000, a maturing agent for butyl-rubber and a tackifying agent which is compatible with the rubber. The compsn. has a tensile strength of at least 210 kPa, an extension of at least 600% and a crosslinking density such that the swelling index g the compsn. in toluene is 12-40, pref. 12-35. Also claimed is a tyre which is self sealing and incorporates the compsn. The compsn. automatical seals punctures in the tread within widely variable temp. conditions.

Seal for a dispensing apparatus

MULTIPLE GLAZED UNIT

... 1353169 Vulcanizable butene polymer compositions PPG INDUSTRIES Inc 28 May 1971 [25 June 1970 (2)] 17744/71 Heading C3P [Also in Division E1] Room temperature vulcanizable sealants for multiple glazed units comprise substantially equal proportions of component (A) comprising 18 to 35% butyl rubber, 8 to 20% polyisobutylene, 15 to 35% polybutene, 0 to 20% carbon black, 2 to 15% silica pigment and 0À8 to 3À2% lead dioxide; and component (B) comprising 18 to 35% butyl rubber, 10 to 18% polyisobutylene, 15 to 35% polybutene, 2 to 15% silica pigment, 5 to 10% zinc oxide and 0À4 to 1À6% paraquinone dioxime; all by weight. The compositions may also contain zirconium silicate, glycidyloxypropyl trimethoxy silane or hydroxyl-containing polybutadiene. Desiccator elements, of which the spacers for the units may be formed, may comprise butadiene/styrene block copolymer, synthetic zeolite and (I) carbon black or (II) ethylene/ethyl acrylate copolymer.

MULTI-LAMINATED MATERIALS WITH SELF-HEALING ONE WITH WATER OF SOURCECASH CLAY STRATUM.

BITUMINOUS SEALING SHEET

WITH WATER SWELL-CASH CLAY/TONE COMPOSITION.

VERFAHREN ZUR HERSTELLUNG EINER BUTYLKAUTSCHUKMASSE

WATER SWELLING SEALANT

CONTAINER CLOSURES AND PROCESSES OF MAKING THEM

SELF-HEALING BENTONITE SHEET MATERIAL COMPOSITE ARTICLE

SELF-HEALING BENTONITE SHEET MATERIAL COMPOSITE ARTICLE The present invention relates to a layered water sealing article of manufacture including a layer of a flexible sheet material adhered to a layer of a composition comprising a non-hydrated water-swellable clay intimately contacted with a polypropene, polybutene, or mixtures thereof particularly useful as a water barrier. The water swellable clay composition can be adhered to the flexible sheet material in any manner, such as by extruding the composition in sheet form onto a layer of sheet material. The clay composition layer is sufficiently tacky to adhere to the sheet material on one major surface, and is sufficiently tacky for adherence to a wall or conduit, floor or roof on an exposed major surface in areas of potential water flow to prevent the seepage of water through the bentonite clay composition layer. In one embodiment, the clay composition layer includes a polypropene and/or a polybutene and an elastomer, such as butyl rubber ...

MEDICAL CONTAINER STOPPER

A stopper for hermetically sealing an opening of a medical container. The stopper is made of a composition comprising 30 to 80% by weight of a partially crosslinked butyl rubber, 10 to 40% by weight of a thermoplastic resin, and 5 to 50% by weight of an inorganic powder.

THERMALLY STABLE SEALANT COMPOSITION

A sealant Composition particularly suitable for vehicle tires comprising a cured butyl rubber present only in the form of a copolymer having a molecular weight in excess of 100,000 and ore or more tackifiers, the tensile strength, elongation and cross-link density of the composition being adjusted to produce the necessary properties for tire sealants. The composition may also be adapted for use in adhesive products for use in connection with membrane roofing materials.

CURABLE SEALANT TWO-COMPONENT COMPOSITION

PUMPABLE DESSICATED MASTIC

A pumpable, thermoplastic desiccated mastic capable of desiccating a sealed insulating glass unit. The disclosed compositions comprise: A) a resin component consisting essentially of: i) 4-75 % by weight of the resin component of a film former, the film former including a member selected from the group consisting of: a) a homogeneous substantially linear ethylene/.alpha.-olefin interpolymer; b) a linear, Y block or star block copolymer rubber; c) a liquid polybutene polymer; or d) mixtures of a, b, and/or c; alone, or combination with one or more polymers selected from the group consisting of: e) a polyisobutylene polymer having a weight average molecular weight of about 35,000 or more; and f) a butyl rubber having a weight average molecular weight of up to about 500,000, said butyl rubber, if present, representing less than 50 % of the film former component; ii) 25-96 % by weight of the resin component of an alkylene polymer component consisting of a member selected from the group consisting ...

CONTAINER CLOSURES AND PROCESSES OF MAKING THEM

Bottle gaskets are provided from a thermoplastic composition comprising a homogeneous blend of butyl rubber pith other thermoplastic polymer. The gaskets provide an effective seal at a moderate pressure but permit venting at a higher pressure. They can be made by inserting molten heated thermoplastic material into the bottle cap and moulding it in the cap and cooling it to form the gasket.

Method for realization of seals for the obturation of containers, obturators of containers thus obtained and materials thermoplastic applicablespour such joints

JOINTS ELASTOMERES POUR CONDITIONNEMENT AEROSOL AU DIMETHYLETHER

JOINTS ELASTOMERES POUR CONDITIONNEMENT AEROSOL RENFERMANT AU MOINS UN SOLVANT DU GROUPE COMPRENANT L'EAU, LE CHLORURE DE METHYLENE, LE BUTANE, LE PROPANE ET UN PROPULSEUR GAZEIFIABLE CONSTITUE AU MOINS EN PARTIE PAR DU DIMETHYLETHER. JOINTS CONSTITUES, AU MOINS EN PARTIE, PAR UN ELASTOMERE BUTYLE MODIFIE OU NON, VULCANISE PAR UN OXYDANT NON SOUFRE EN L'ABSENCE DE CHLORE LIBRE. APPLICATION NOTAMMENT AUX JOINTS DE VALVES ET DE BIDONS AEROSOLS.

NON-AQUEOS WATERDISPLACING SEALANT COMPOSITION FOR VEHICLEGLASS JOINTS AND THE LIKE

SEALANT COMPOSITION

SEALANT COMPOSITION

A sealant composition particularly suitable for a plastic substrate is disclosed. The sealant composition contains: a partially (meth)acrylated epoxy resin, a hydrophobic oligomer having a flexible hydrophobic backbone moiety and at least one functional group co-curable with the partially (meth)acrylated epoxy resin, and a latent epoxy-curing agent.

Adhesive containing zinc powder

A novel sealant composition particularly suitable for use in spot welding operations. The novel sealant composition comprises thermoplastic synthetic polymeric material and an amount of finely divided zinc up to about 15 percent by weight of the composition.

Adsorbent containing composition for use in insulating glass units

An adsorbent containing composition for use in an insulating glass unit is provided. The composition includes a depolymerized butyl rubber having a low viscosity average molecular weight which is a carrier for moisture and volatile organic chemical adsorbing materials. The composition is economical to produce and results in a composition which effectively desiccates a sealed insulating glass unit without the problem of chemical fogging.

A compression-resistant water-swelling rubber composition and watertight sealing material comprising the same

The invention provides a novel watertight rubbery sealing material, the water-swellability of which is hardly influenced by the compression of the material in a dry condition. The watertight sealing material is a shaped and vulcanized body of a water-swellable rubber composition comprising, in a limited proportion, (a) a chloroprene rubber, (b) a highly water-absorptive resin such as a crosslinked polyacrylic acid in the form of a sodium salt, (c) a rubber polymer unvulcanizable with a metal oxide-based vulcanizing agent and (d) a metal oxide-based vulcanizing agent which is preferably a combination of magnesium oxide and zinc oxide.

SEALANT COMPOSITION AND ITS USE IN WELDING

Liquid sealing gasket sheet materials

GASKETS

Liquid sealing gasket sheet materials

Fluid-sealing gasket sheet materials are described herein which seal particularly well against polar liquids. These gasketing sheets have from about 5 to about 20 % fiber and at least about 62 % filler, and a reduced binder concentration, container about 18 % by weight of binder or less allowing the binder to be reduced even to zero. The filler must be at least about 30 % by weight of a gel-forming mineral filler. In addition to giving from good to very excellent seals against polar liquids, this gasketing also has good torque retention and creep resistance.

SEALING ADHESIVE COMPOSITIONS SUITABLE FOR USE IN GLAZING

... 1,244,208. Sealing compositions for glass to metal joins. PROTECTIVE TREATMENTS Inc. 21 Nov., 1968, No. 55263/68. Heading C1M. [Also in Division C3] A sealing strip for glazing, particularly glass into windshield frames or Al panels, comprises an intimate mixture of 100 parts by weight of elastomer; 75-250 parts by weight of a low volatility plasticizer or 25-250 parts by weight of a low volatility plasticizer and 5-20 parts by weight of a volatile plasticizer; and 93 to 250 parts by weight of finely divided solids of which at least 30 parts by weight are solids which are fibrous and/or of a character which produces thixotropic mixtures with the plasticizer; the strand having physical characteristics such that a strand of I-beam crosssection as shown in Fig. 1 of the accompanying drawings (not shown) will be compressed to an equilibrium at half thickness by a force of 25 to 46 p.s.i., has a rebound after compression to half thickness and standing for one hour of 2À5- 12À5% recovery based ...

CURABLE SEALANT TWO-COMPONENT COMPOSITION

Water swelling sealing body

A water-swelling sealant having excellent water-tightness and durability, and which may be moulded e.g. into strip form, is obtained by compounding (A) uncrosslinked rubber and/or partially crosslinked rubber with (B) white carbon (e.g. silicic acid anhydride, hydrated silicic acid or calcium silicate) and (C) a plasticizer, the amount of (B) being 18-45% and that of (C) 13-40% by weight based on the total sealant composition. The sealant may also include an elastomer having a high restoring property after compression, and an adhesive layer may be applied to at least a part of the surface of the moulded sealant.

Improvements in sealing compositions

A sealing composition comprises a plasticizing elastomer, a curable elastomer and an accelerator adapted to effect vulcanization of the curable elastomer, only at or near at least the temperature of boiling water. The plasticizing elastomer may be a butyl rubber which may be chlorinated while the curable elastomer may be natural rubber, butadiene-styrene or lower polymers such as the semi-liquid product obtained by depolymerizing natural rubber. The composition may contain as additional ingredients:-fillers, antioxidants, pigments, lime dispersed in oil, liquid coumarone resins, finely divided cellulosic materials and phthalate plasticizers. The composition may be used for sealing the joints of tanks containing liquids.

Improvements in or relating to valves

Improvements in mastic compositions

A mastic composition comprises at least one non-vulcanized elastomer, at least one phenolformaldehyde or aminoplast resin and at least one water-repellent resin having adhesive properties. The water-repellent resins are polydienic resins such as petroleum resins obtained by polymerization of mono- and di-olefins such as those obtained in steam-cracked petroleum distillates, using Friedel-Crafts catalysts. Specified elastomers are butyl rubber, halogenated butyl rubbers, chloroprene rubber, ethylenepropylene rubbers, polyisobutylenes, reticulated polyethylenes and elastomeric copolymers of one or more mono-olefins and endocyclic hydrocarbons containing a bridge formed by one or more methylene groups. The proportions of the constituents of the mastic are preferably from 5 to 500 parts thermosetting resin and from 5 to 500 parts of water-repellent resin per 100 elastomer. There may also be present fillers, pigments, plasticizers and additionl adhesive agents while the intimate mixing of the ...

SOLUTIONS FOR THE PREPARATION OF HEAT-RESISTAND POLYMERS

... 1423705 Compositions of rubbery materials; putty RHEIN-CHEMIE RHEINAU GmbH 10 May 1973 [10 May 1972] 22297/73 Headings C3N C3P and C3R Compositions of rubbery materials are prepared by first homogenizing (A) from 10 to 70 parts by weight of one or more of butyl rubber, EPDM, natural rubber, ABS rubber, polyacrylate rubber or factice, with (B) from 5 to 50 parts by weight of a filler which is one or more of silicon dioxide, a carbonate, a silicate or a metal oxide; and thereafter adding (C) either from 30 to 80 parts by weight of a plasticizer which is an ester of phthalic, benzoic, sebacic or adipic acid, or from 40 to 60 parts by weight of an oil which is a mineral oil, a paraffin oil, a polyhydric alcohol or a mixture thereof. The homogenization of (A) with (B) may be effected in a Z-kneader, rubber kneader or dispersion kneader. The compositions thus prepared are used as components of glazier's putty or jointing compositions. In Examples, (1) a composition of acrylate rubber, silicate ...

CONTAINER CATCHES AND PROCEDURES FOR THE PRODUCTION

VERGLAZUNG WITH A ACTIVEN THERMAL, ELECTRICAL AND/OR ELECTRO-CHEMICAL UNIT

SEALS MATERIAL

RECLAIMED BUTYL RUBBER WATER STOPPER

ULTRA PURE RUBBER

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.

AQUEOUSLY- SWELLING WATER STOPPER AND A PROCESS OF STOPPING WATER THEREBY

Elastomer seal for aerosol contg. solvent

VULCANIZABLE COMPOSITION, FOR SEALING TWO COMPONENTS

LIQUID SEALING GASKET SHEET MATERIALS

Fluid-sealing gasket sheet materials are described herein which seal particularly well against polar liquids. These gasketing sheets have from about 5 to about 20 % fiber, and at least about 62 % filler, and a reduced binder concentration, container about 18 % by weight of binder or less, allowing the binder to be reduced even to zero. The filler must be at least about 3 % by weight of a gel-forming mineral filler. In addition to giving from good to very excellent seals against polar liquids, this gasketing also has good torque retention and creep resistance.

Hot melt butyl sealant intermediate

Intermediate compositions useful for the preparation of improved hot melt butyl sealants are obtained by partially grafting a mixture of a butyl rubber, a different elastomer and/or a crystalline polymeric resin, and an elastomeric resin. Preferred compositions are (1) partially grafted mixtures of butyl rubber, epichlorohydrin rubber, and a block copolyester elastomeric resin, (2) partially grafted mixtures of butyl rubber, ethylene-vinyl acetate copolymer, and a block copolyester elastomeric resin, and (3) partially grafted mixtures of butyl rubber, styrene-ethylene-butylene-styrene block copolymer rubber, and a block copolyester elastomeric resin.

Pumpbarer, feuchtigkeitsentziehender Kitt

Liquid sealing gasket sheet materials

Metal-containing phosphoric acid derivatives

... 1,135,297. Metal-containing phosphoric acid derivatives. LUBRIZOL CORP. 14 Sept., 1966 [5 Oct., 1965; 18 July, 1966], No. 41100/66. Heading C2C. [Also in Divisions C3 and C7] A metal-containing phosphoric acid derivative is obtained by (1) reacting one mol of phosphoric acid with up to about 5 equivalents of an organic epoxide and (2) reacting the resulting product with about 0À4 to 2À0 equivalents of a metal base. The invention also includes as new products compounds or mixtures of compounds having the general formula wherein R1 is a substituted or unsubstituted ethylene radical, R2 is H, a metal cation or (R1O) x H, M is one equivalent of a metal cation and x is an integer from 1 to 5, the sum ofthex's when R2 is (R1O) x H being not more than 5. The epoxide reaction in the first step is exothermic and may be carried out by gradually adding the epoxide to the acid and allowing the temperature to rise to about 70-90‹ C., 1À0 to 2À5 moles of the ...

NON-AQUEOS WATERDISPLACING SEALANT COMPOSITION FOR VEHICLEGLASS JOINTS AND THE LIKE

CONTAINERS AND COMPOSITIONS FOR SEALING THEM

A package formed of a wooden crate or pallet impreganted with a chlorinated phenol and/or anisole wood preservative, one or more bottles containing a potable material, such as beer, a cap on each bottle and a sealing gasket between the bottle and the cap. The gasket is formed of butyl rubber (20 to 80% by weight) and one or more thermoplastic polymers, preferably polyethylene (40 to 60% by weight). WPCAB/ID25/10-14/9-13 ...

PUMPABLE DESSICATED MASTIC

A pumpable, thermoplastic desiccated mastic capable of desiccating a sealed insulating glass unit. The disclosed compositions comprise: A) a resin component consisting essentially of: i) 4-75 % by weight of the resin component of a film former, the film former including a member selected from the group consisting of: a) a homogeneous substantially linear ethylene/.alpha.-olefin interpolymer; b) a linear, Y block or star block copolymer rubber; c) a liquid polybutene polymer; or d) mixtures of a, b, and/or c; alone, or combination with one or more polymers selected from the group consisting of: e) a polyisobutylene polymer having a weight average molecular weight of about 35,000 or more; and f) a butyl rubber having a weight average molecular weight of up to about 500,000, said butyl rubber, if present, representing less than 50 % of the film former component; ii) 25-96 % by weight of the resin component of an alkylene polymer component consisting of a member selected from the group consisting ...

RUBBERS WITH TUNABLE LEVELS OF METAL CONTAINING ANTI-AGGLOMERANTS

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media having a tunable level of metal containing anti- agglomerants and rubber particles obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.

Ultra pure rubber

JOINT OF VALVE OR PUMP

Solar cell sealing material, and solar cell module prepared by using same

Provided are a solar cell encapsulant material which facilitates production of solar cell modules, which does not require a crosslinking step and which is excellent in heat resistance and others, and a solar cell module produced by the use of the encapsulant material. The solar cell encapsulant material comprises a resin composition (C) that contains an olefin-based polymer (A) satisfying the following requirement (a) and an olefin-based polymer (B) satisfying the following requirement (b). (a) The crystal melting peak temperature of the polymer, as measured at a heating rate of 10° C./min in differential scanning calorimetry, is lower than 100° C. (b) The extrapolated onset temperature of melting of the polymer, as measured at a heating rate of 10° C./min in differential scanning calorimetry, is 100° C. or higher.

Composition for an refrigerator gasket

A composition for a refrigerator gasket is provided. The composition includes, as a polymer base, a blend of an olefin/α-olefin (OAO) copolymer having a melting point of at least 100° C. and a styrene block copolymer (SBC). The polymer base has a melt index (190° C., 5 kg) of 0.01 to 15 g/10 min.

ULTRA PURE RUBBER

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom. 182.-. (canceled)83. A process for the preparation of an aqueous slurry comprising a plurality of copolymer particles suspended therein , the process comprising:a) providing a reaction medium comprising an organic diluent, and at least two monomers whereby at least one monomer is an isoolefin and at least one monomer is a multiolefin;b) polymerizing the monomers within the reaction medium in the presence of an initiator system to form a medium comprising the copolymer, the organic diluent and optionally residual monomers;c) contacting the medium obtained in step b) with an aqueous medium comprising at least one LCST compound having a cloud point of 0 to 100° C. and removing at least partially the organic diluent and to the extent present in the medium removing at least partially the residual monomers to obtain the aqueous slurry comprising the copolymer particles selected from the group consisting of Ionic or non-Ionic surfactants, emulsifiers, and antiagglomerants or are in another embodiment', 'salts of (mono- or multivalent) metal ions or are in another embodiment', 'carboxylic acid salts of multivalent metal ions or are in another embodiment', 'stearates or palmitates of mono- or multivalent metal ions., 'whereby the aqueous medium contains 20,000 ppm or less of non-LCST compounds whereby the non-LCST compounds are'}84. The process according to claim 83 , wherein the aqueous medium comprises alternatively or additionally 500 ppm or less of the non-LCST compounds.85. The process according to claim 83 , wherein the aqueous medium comprises alternatively or additionally 550 ppm or less of salts of metal ions calculated on their metal content and with respect to the amount of copolymer present in the medium ...

Encapsulating material for solar cell and solar cell module

An encapsulating material for solar cell that is capable of suppressing the corrosion of metal and the occurrence of yellowing at a high temperature and has excellent long-term reliability in a constant temperature and humidity is provided. The encapsulating material for solar cell of the invention contains an ethylene/α-olefin copolymer, a hindered amine-based light stabilizer, a hindered phenol-based stabilizer, and a phosphorous-based stabilizer as essential components.

ELEMENT SEALING RESIN COMPOSITION FOR ORGANIC ELECTRONIC DEVICE, ELEMENT SEALING RESIN SHEET FOR ORGANIC ELECTRONIC DEVICE, ORGANIC ELECTROLUMINESCENCE ELEMENT, AND IMAGE DISPLAY

Provided are an element sealing resin composition for organic electronic devices, which promotes a balance between the water vapor barrier properties and adhesiveness, decreases the water content, and sufficiently suppresses the generation of outgases, so that consequently the service life of an element for organic electronic devices can be lengthened, and which gives a satisfactory external appearance when used to seal an organic electronic device; an element sealing resin sheet for organic electronic devices; an organic electroluminescent element; and an image display apparatus. Disclosed is an element sealing resin composition for organic electronic devices, comprising a polyisobutylene resin (A) having a weight average molecular weight (Mw) of 10,000 to 300,000 and a hydrogenated cyclic olefin-based polymer (B), and having a water content according to the Karl-Fischer method of 500 ppm or less and an amount of outgas generation of 500 ppm or less when heated at 85° C. for 1 hour.

POLYOLEFIN ELASTOMER COMPOSITIONS AND METHODS OF MAKING THE SAME

An elastomeric article is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm. The elastomeric article can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm, a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst. 1. A silane-crosslinked polyolefin elastomer blend comprising:{'sup': '3', 'a first polyolefin having a density less than 0.86 g/cm;'}a second polyolefin having a percent crystallinity less than 40%;a silane crosslinker,{'sup': '3', 'wherein the silane-crosslinked polyolefin elastomer blend exhibits a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.) and wherein the silane-crosslinked polyolefin elastomer blend has a density less than 0.90 g/cm.'}2. The silane-crosslinked polyolefin elastomer blend of further comprising a microencapsulated foaming agent.3. The silane-crosslinked polyolefin elastomer blend of claim 1 , wherein the density is less than 0.70 g/cm.4. The silane-crosslinked polyolefin elastomer blend of further comprising a foaming agent.5. The silane-crosslinked polyolefin elastomer blend of claim 1 , wherein the density is less than 0.60 g/cm.6. The silane-crosslinked polyolefin elastomer blend of claim 1 , wherein the compression set is from about 15.0% to about 35.0% claim 1 , as measured according to ASTM D 395 (22 hrs @ 70° C.).7. The silane-crosslinked polyolefin elastomer blend of claim 1 , wherein the first polyolefin comprises an ethylene-octene copolymer from about 60 wt % to about 97 wt %.8. The silane-crosslinked polyolefin elastomer blend of claim 1 , wherein the second polyolefin comprises a polypropylene homopolymer from about 10 wt % to about 35 wt % and/or ...

Container Sealant Composition

Disclosed is a container sealant composition with improved tensile strength and reduced squeeze-out during seaming. The composition comprises a latex of a carboxylated styrene-butadiene rubber, a colloidal silica filler, wherein the colloidal silica is pretreated with an organosilane, and a tackifier. Also disclosed is a method of sealing a can with the aforedescribed container sealant composition.

SHOE SOLES, COMPOSITIONS, AND METHODS OF MAKING THE SAME

A shoe sole composition and method for making a shoe sole are provided. The shoe sole includes a composition comprising a foamed silane-crosslinked polyolefin elastomer having a density less than 0.50 g/cm. The shoe sole exhibits a compression set of from about 5.0% to about 20.0%, as measured according to ASTM D 395 (6 hrs @ 50° C.). The foamed silane-crosslinked polyolefin elastomer can be produced from a blend including a first polyolefin having a density less than 0.86 g/cm, a second polyolefin, having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, a condensation catalyst, and a foaming agent. 1. A shoe midsole comprising:{'sup': '3', 'claim-text': [{'sup': '3', 'a first polyolefin having a density less than 0.86 g/cm,'}, 'a second polyolefin having a crystallinity less than 40%,', 'a silane crosslinker,', 'a grafting initiator,', 'a condensation catalyst, and', 'a foaming agent,, 'a foamed silane-crosslinked polyolefin elastomer having a density less than 0.50 g/cm, the foamed silane-crosslinked polyolefin elastomer comprisingwherein the shoe midsole exhibits a compression set of from about 1.0% to about 50.0%, as measured according to ASTM D 395 (48 hrs @ 50° C.).2. The shoe midsole of claim 1 , wherein the first polyolefin is an ethylene/α-olefin copolymer from about 60 wt % to about 97 wt %.3. The shoe midsole of claim 1 , wherein the second polyolefin is a polypropylene homopolymer and/or a poly(ethylene-co-propylene) claim 1 , the second polyolefin from about 10 wt % to about 35 wt %.4. The shoe midsole of claim 1 , wherein the silane crosslinker comprises a vinyltrialkoxy silane from about 1 wt % to about 4 wt %.5. The shoe midsole of claim 1 , wherein the grafting initiator comprises one or more halogen molecules claim 1 , azo compounds claim 1 , carboxylic peroxyacids claim 1 , peroxyesters claim 1 , peroxyketals claim 1 , and peroxides claim 1 , the grafting initiator from greater than 0.15 wt % to about 2 wt %.6. The shoe ...

ROOFING MEMBRANES, COMPOSITIONS, AND METHODS OF MAKING THE SAME

A roofing membrane and a method of making the same is provided. The roofing membrane includes a top layer having a flame retardant and a first silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm; a scrim layer; and a bottom layer having a flame retardant and a second silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm. The top and bottom layers of the roofing membrane both exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @ 70° C.). 1. A roofing membrane comprising:{'sup': '3', 'a top layer comprising a flame retardant and a first silane-crosslinked polyolefin elastomer having a density less than 1.45 g/cm;'}an optional scrim layer; and{'sup': '3', 'a bottom layer comprising a flame retardant and a second silane-crosslinked polyolefin elastomer having a density less than 1.45 g/cm.'}2. The roofing membrane of claim 1 , wherein the flame retardant comprises a magnesium hydroxide and/or an aluminum hydroxide from about 20 wt % to about 70 wt %.3. The roofing membrane of claim 1 , wherein the first and second silane-crosslinked polyolefin elastomers both exhibit a crystallinity of from about 5% to about 25%.4. The roofing membrane of claim 1 , wherein the first and second silane-crosslinked polyolefin elastomers have a glass transition temperature of from about −75° C. to about −25° C.5. The roofing membrane of claim 1 , wherein the first and second silane-crosslinked polyolefin elastomers each comprise a first polyolefin having a density less than 0.86 g/cm claim 1 , a second polyolefin claim 1 , a silane crosslinker claim 1 , a grafting initiator claim 1 , and a condensation catalyst.6. The roofing membrane of claim 5 , wherein the silane crosslinker comprises a vinyltrialkoxy silane from about 1 wt % to about 4 wt %.7. The roofing membrane of claim 5 , wherein the condensation catalyst comprises a sulfonic ester catalyst and/or a tin catalyst from about 1 wt % to ...

ELASTOMERIC SEAL

The present invention provides a seal comprising an elastomeric composite, said composite comprising an elastomeric polymer and a negative thermal expansion (NTE) filler, the NTE filler has a coefficient of thermal expansion (CTE) lower than −6×10-6 K-1 within a temperature range of 220-293 K and is present in an amount of 0.01-50 volume % based on the total volume of the elastomeric composite at 20° C. 1: A seal comprising an elastomeric composite , said composite comprising an elastomeric polymer and a negative thermal expansion (NTE) filler , the NTE filler having a coefficient of thermal expansion (CTE) lower than −6×10Kwithin a temperature range of 220-293 K and being present in an amount of 0.01-50 volume % based on the total volume of the elastomeric composite at 20° C.2: A seal according to claim 1 , wherein the elastomeric composite constitutes more than 10 volume % claim 1 , more than 25 volume % or more than 50 volume % of said seal claim 1 , based on the total volume of the seal.3: A seal according to claim 1 , wherein the amount of NTE filler is in the range of 1.0-30 volume % based on the total volume of the elastomeric composite at 20° C.4: A seal according to claim 1 , wherein the NTE filler has a CTE lower than −6×10K claim 1 , lower than −15×10K claim 1 , lower than −25×10K claim 1 , lower than −30×10K claim 1 , or lower than −35×10K claim 1 , at a temperature within a range of 220-293 K.5: A seal according to claim 1 , wherein the NTE filler has a CTE lower than −6×10K claim 1 , lower than −15×10K claim 1 , lower than −25×10K claim 1 , lower than −30×10K claim 1 , or lower than −35×10K claim 1 , over a temperature range of 220-293 K.6: A seal according to claim 1 , wherein the NTE filler is evenly distributed in the elastomeric composite.7: A seal according to claim 1 , wherein the amount of NTE filler in the elastomeric composite decreases or increases over at least one dimension of the seal.8: A seal according to claim 7 , wherein the amount of ...

Self-healing water-swellable hydraulic seal

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.

MATERIAL FOR GASKET

A material for gaskets is disclosed, wherein a metal surface coating layer, a primer layer and a rubber layer are formed, or a metal surface coating layer and a rubber layer are formed on at least a part of one side or both sides of a substrate formed of a metal plate sequentially from the metal plate side, and the metal surface coating layer comprises (A) one or more carbonates selected from the group consisting of Mg carbonate, Co carbonate, Zr carbonate, Mn carbonate, Ni carbonate, and Cu carbonate and (B) one or more selected from the group consisting of silica, alumina, zirconia, and titania. 1. A material for gaskets , comprising at least a substrate formed of a metal plate , a metal surface coating layer formed on one side surface or both side surfaces of the substrate , and a rubber layer formed via the metal surface coating layer , whereinthe metal surface coating layer comprises (A) one or more carbonates selected from the group consisting of Mg carbonate, Co carbonate, Zr carbonate, Mn carbonate, Ni carbonate, and Cu carbonate and (B) one or more selected from the group consisting of silica, alumina zirconia, and titania.2. The material for gaskets according to claim 1 , comprising a primer layer formed between the metal surface coating layer and the rubber layer claim 1 , wherein the primer layer comprises a cured product of a phenolic resin or a cured product of an epoxy resin.3. The material for gaskets according to claim 1 , wherein rubber forming the rubber layer is nitrile rubber.4. The material for gaskets according to claim 1 , wherein rubber forming the rubber layer is Fluorocarbon Rubber.5. The material for gaskets according claim 1 , wherein the metal surface coating layer is a surface coating layer formed by applying claim 1 , a treatment liquid for forming a metal surface coating layer comprising (A) one or more carbonates selected from the group consisting of Mg carbonate claim 1 , Co carbonate claim 1 , Zr carbonate claim 1 , Mn carbonate ...

ULTRA PURE RUBBER AND METHOD THEREOF

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom. 1. A sealant comprising:i) 0.1 to 60 weight percent of a copolymer composition comprising at least 96.0 weight percent of a copolymer and at least one lower critical solution temperature (LCST) compound;ii) 0.1 to 40 weight percent of at least one filler;iii) 0.1 to 30 weight percent of at least one secondary rubber;iv) 0.01 to 2 weight percent of at least one anti-oxidant;v) zero, or from 0.01 to 30 weight percent of at least one non-crystalline thermoplastic;wherein the copolymer includes at least one isoolefin monomer and at least one multiolefin monomer; andwherein the total amount of the copolymer composition, the at least one filler, the at least one secondary rubber, the at least one anti-oxidant, and the at least one non-crystalline thermoplastic is 80 to 100 weight percent, based on the total weight of the sealant.2. The sealant of claim 1 , wherein the copolymer composition is provided as particles.3. The sealant of claim 2 , wherein the sealant includes 98.5 weight percent or more of the copolymer composition.4. The sealant of claim 3 , wherein the sealant comprises a ratio of copolymer to carboxylic acid salts of mono- and multivalent ions of at least 250:1.5. The sealant of claim 2 , wherein the copolymer composition includes 1 ppm to 5 claim 2 ,000 ppm of the at least one LCST compound claim 2 , wherein the copolymer composition has an ash content of 0.25 weight percent or less claim 2 , as measured according to ASTM D 5667.6. The sealant of claim 2 , wherein the copolymer composition comprises:100 parts by weight of the copolymer;0.0001 to 0.5 parts by weight of the at least one LCST compound;zero, or from 0.0001 to 0.4 parts by weight of one or more non-LCST compounds;zero, or from 0.005 to 0.3 ...

SEALING RESIN COMPOSITION

The present invention provides a sealing resin composition containing a polyester resin (A), carbodiimide (B) and an antioxidant (C). 1. A sealing resin composition containing a polyester resin (A) , carbodiimide (B) and an antioxidant (C).2. The sealing resin composition according to claim 1 , wherein acid value of the polyester resin (A) is 100 equivalents/10g or less.3. The sealing resin composition according to claim 1 , wherein the resin composition further contains epoxy (D).4. The sealing resin composition according to claim 1 , wherein the resin composition further contains polyolefin (E).5. The sealing resin composition according to claim 1 , wherein the resin composition further contains a terpene-modified phenol resin (F).6. A sealed body which is sealed by the sealing resin composition mentioned in . The present invention relates to a sealing resin composition. More particularly, it relates to a sealing resin composition which can seal electrical/electronic parts.In electrical/electronic parts which have been widely used for automobiles and electric appliances, electrical insulation property thereof to an outside is essential for achieving their intended use. For example, an electric wire is coated with a resin having electrical insulation property. Recently, need for stuffing electrical/electronic parts having complicated shapes into small volume has been rapidly increasing such as in a case of mobile phones. Under such circumstances, various methods have been adopted for achieving the electrical insulation thereof. Particularly when electrical/electronic parts having complicated shapes such as circuit substrate are sealed by a resin which is to become an insulator, a sealing method is demanded which surely follows the shape of the electrical/electronic parts and does not generate any non-filling parts. A thermoplastic resin (hotmelt resin) is a resin which lowers its viscosity only by means of heating and melting whereby sealing is achieved. A sealed ...

Polyolefin elastomer compositions and methods of making the same

An elastomeric article is provided that includes a composition having a silane-crosslinked polyolefin elastomer with a density less than 0.90 g/cm 3 . The elastomeric article can exhibit a compression set of from about 5.0% to about 35.0%, as measured according to ASTM D 395 (22 hrs @70° C.). The silane-crosslinked polyolefin elastomer can include a first polyolefin having a density less than 0.86 g/cm 3 , a second polyolefin having a crystallinity less than 40%, a silane crosslinker, a grafting initiator, and a condensation catalyst.

Nbr composition

An object is to provide an NBR composition excellent in cold resistance and heat resistance, which can be used with a wide range of temperatures, and an NBR composition excellent in oil resistance without substantially degrading compression set characteristics, and the object can be solved by an NBR composition comprising an NBR polymer, silica, an ether ester series plasticizer and a cross-linking agent, which comprises 100 parts by weight of the NBR polymer where an acrylonitrile content of the NBR polymer is within the range of 20 to 40%, 10 to 150 parts by weight of silica a primary particle size of which is within the range of 50 nm or bigger, and 3 to 20 parts by weight of an ether ester plasticizer a weight average molecular weight MW of which is 500 or more.

SEALING SHEET, AND SEALING STRUCTURE AND DEVICE

A sealing sheet having a resin layer comprising a resin part (A) formed by a resin composition containing one or more resins selected from the group consisting of an acrylic-based resin and a urethane-based resin, and a resin part (B) having a water vapor transmission rate measured in conformity with JIS K 7129 of 15 g/m/day or less, in which the resin part (A) and the resin part (B) are present on at least one surface of the resin layer. The sealing sheet excels in a suppressing effect on moisture intrusion of the sealing sheet itself, and, when manufacturing a sealing structure, excels in an effect to prevent moisture intrusion into the sealing structure from between a substrate (adherend) and the sealing sheet. 1. A sealing sheet having a resin layer comprising a resin part (A) formed by a resin composition comprising one or more resins selected from the group consisting of an acrylic-based resin and a urethane-based resin , and a resin part (B) having a water vapor transmission rate measured in conformity with JIS K 7129 of 15 g/m/day or less ,wherein the resin part (A) and the resin part (B) are present on at least one surface of the resin layer.2. The sealing sheet according to claim 1 , wherein claim 1 , on the at least one surface of the resin layer claim 1 , the resin part (A) or the resin part (B) forms a closed region claim 1 , and the other resin part is present in the closed region.3. The sealing sheet according to claim 1 , wherein claim 1 , on the at least one surface of the resin layer claim 1 , a ratio of a total surface area of the resin part (A) to a total surface area of the resin part (B) [(A) area/(B) area] is 10/90 to 90/10.4. The sealing sheet according to claim 1 , wherein the resin layer is provided on a support.5. The sealing sheet according to claim 4 , wherein only the resin part (B) is present on a surface of the resin layer on the side of the support and the resin part (A) and the resin part (B) are present on the other surface of the ...

ULTRA PURE RUBBER AND METHOD THEREOF

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media and highly pure rubbers obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom. 1. A process for the preparation of an aqueous slurry comprising a plurality of copolymer particles suspended therein , the process comprising:a) providing a reaction medium comprising an organic diluent, and at least two monomers whereby at least one monomer is an isoolefin and at least one monomer is a multiolefin;b) polymerizing the monomers within the reaction medium in the presence of an initiator system to form a medium comprising the copolymer, the organic diluent and optionally residual monomers; andc) contacting the medium obtained in step b) with an aqueous medium comprising at least one lower critical solution temperature (LCST) compound having a cloud point of 0 to 100° C., and removing at least partially the organic diluent and to the extent present in the medium removing at least partially the residual monomers to obtain the aqueous slurry comprising the copolymer particles;wherein the amount of the LCST compounds in the aqueous medium employed in step c) is from 1 to 20,000 ppm with respect to the amount of copolymer present in the medium obtained in to step b).2. The process according to claim 1 , whereby the aqueous medium contains 0 to 20 claim 1 ,000 of non-LCST compounds claim 1 , with respect to the amount of copolymer present in the medium obtained according to step b) claim 1 , wherein the non-LCST compounds are:selected from the group consisting of ionic or non-ionic surfactants, emulsifiers, and antiagglomerants; orsalts of (mono- or multivalent) metal ions; orcarboxylic acid salts of multivalent metal ions; orstearates or palmitates of mono- or multivalent metal ions.3. The process according to claim 2 , wherein the aqueous medium includes 1 to 5 claim 2 ,000 ppm of the non-LCST ...

Closure plug of a battery

A closure plug of a battery includes an external thread for installing into an opening of a battery cover, and at least one gas-tight seal arranged on an outer side of the closure plug. The at least one gas-tight seal includes a mixture of polypropylene or polyethylene and polyisobutylene.

CURABLE COMPOUND

Provided is a curable compound having a low melting temperature, having excellent workability as a result of having good solvent solubility, and being capable of forming a cured product having excellent heat resistance. The curable compound according to an embodiment of the present invention includes the following characteristics (a) to (e). (a) Number average molecular weight (calibrated with polystyrene standard): 1000 to 15000. (b) Proportion of a structure derived from an aromatic ring in the total amount of the curable compound: 50 wt. % or greater. (c) Solvent solubility at 25° C.: 1 g/100 g or greater. (d) Glass transition temperature: 280° C. or lower. (e) 5% Weight loss temperature (T) measured at a rate of temperature increase of 10° C./min (in nitrogen), for a cured product of the curable compound: 300° C. or higher. 1. A curable compound having characteristics (a) to (e):(a) a number average molecular weight, calibrated with polystyrene standard, is from 1000 to 15000;(b) a proportion of a structure derived from an aromatic ring in a total amount of the curable compound is 50 wt. % or greater;(c) solvent solubility at 25° C. is 1 g/100 g or greater;(d) a glass transition temperature is 280° C. or lower; and{'sub': 'd5', '(e) a 5% weight loss temperature (T) of a cured product of the curable compound, measured at a rate of temperature increase of 10° C./min, in nitrogen, is 300° C. or higher.'}3. The curable compound according to claim 2 , wherein Rand Rin Formula (1) are identical or different and each represent a curable functional group having a cyclic imide structure.6. The curable compound according to claim 2 , wherein Arto Arin Formula (I) and Formula (II) are identical or different claim 2 , and each represent a group in which two hydrogen atoms are removed from an aromatic ring structure having from 6 to 14 carbons claim 2 , or a group in which two hydrogen atoms are removed from a structure in which two or more aromatic rings each having from 6 ...

Gas seal member for high-pressure hydrogen device, and high-pressure hydrogen device

Disclosed is a gas seal member for high-pressure hydrogen device with sufficiently reduced occurrence of both swelling destruction and blister destruction. The gas seal member is formed of a cross-linked product of an elastomer composition which comprises an elastomer and fibrous carbon nanostructures, wherein a hydrogen diffusion coefficient D1 of a cross-linked product of an elastomer component including the elastomer and a hydrogen diffusion coefficient D2 of the cross-linked product of the elastomer composition satisfy the relationship 0.7<D2/D1<1.0.

Cross-linkable rubber composition and cross-linked rubber

A cross-linkable rubber composition containing a carboxyl group-containing nitrile rubber (A) with an iodine value of 120 or less, a polyamine cross-linking agent (B), and a specific basic cross-linking accelerator (C) is provided. The basic cross-linking accelerator (C) is preferably dicyclopentylamine or dicyclohexylamine.

Functionalized alpha-olefin polymer, as well as cured composition and cured article using same

A functionalized α-olefin polymer having an α-olefin polymer main chain and an alkoxysilyl group and satisfying the following (a) to (d): (a) The meso-pentad fraction [mmmm] is less than 20 mol %, or the meso-diad fraction [m] is less than 95 mol %. (b) The weight-average molecular weight (Mw) is from 1,000 to 500,000. (c) The alkoxysilyl group concentration in all the monomer units is from 0.01 to 50 mol %. (d) The α-olefin polymer is a propylene homopolymer, a 1-butene homopolymer or a propylene-1-butene copolymer.

SEALANT MATERIAL

A sealant material for sealing joints between male and female mating parts comprising: 1. A sealant material for sealing joints between male and female mating parts comprising:(a) an elongate flexible thread suitable for wrapping around at least one of the parts, and(b) a joint sealing composition comprising an anaerobically curable composition in solid form, the flexible thread being coated with the anaerobically curable composition.2. A sealant material according to wherein the curable composition comprises a curable component and optionally has at least one functional group selected from acrylates and methacrylates claim 1 , and combinations thereof.4. A sealant material according to wherein the curable composition is in solid tack-free form.5. A sealant material according to wherein the curable composition has a melting point from about 40° C. to about 100° C.6. A sealant material according to wherein the curable composition has a melting point from about 50° C. to about 100° C.7. A sealant material according to wherein the composition comprises an anaerobically curable component which comprises an anaerobically curable monomer.8. A sealant material according to wherein the composition comprises an anaerobically curable component which comprises an anaerobically curable monomer and a resin component.9. A sealant material according to wherein the resin component is anaerobically curable.10. A sealant material according to wherein the resin component and the anaerobically curable monomer are each a solid claim 8 , each with a melting point in the range from about 30° C. to about 100° C.11. A sealant material according to wherein the composition is provided in an at least two-part form and a first part comprises the resin component and a second part comprises the anaerobically curable monomer.12. A sealant material according to wherein the anaerobically curable component includes the product formed by melting the resin component and the anaerobically curable ...

SELF-HEALING WATER-SWELLABLE HYDRAULIC SEAL

A self-healing hydraulic seal is provided. The self-healing hydraulic seal is prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide. 1. A self-healing hydraulic seal prepared from a water-swellable elastomeric composition comprising a base polymer and a plant-based polysaccharide.2. The self-healing hydraulic seal of claim 1 , wherein the base polymer is selected from the group consisting of acrylonitrile butadiene rubber (NBR) claim 1 , carboxylated acrylonitrile butadiene rubber claim 1 , hydrogenated acrylonitrile butadiene rubber claim 1 , carboxylated hydrogenated acrylonitrile butadiene rubber claim 1 , chlorosulfonated polyethylene rubber (CSM); and mixtures or blends thereof.3Tetrapanax papyriferus. The self-healing hydraulic seal of claim 2 , wherein the plant-based polysaccharide is selected from the group consisting of carrot fiber claim 2 , squash fiber claim 2 , yam fiber claim 2 , turnip fiber claim 2 , parsnip fiber claim 2 , coir fiber (coconut husk) claim 2 , flax fiber (herbaceous plant) claim 2 , rice paper plant fiber () claim 2 , palm fiber claim 2 , beet fiber claim 2 , apple fiber claim 2 , orange fiber claim 2 , and grapefruit fiber claim 2 , and mixtures and blends thereof.4. The self-healing hydraulic seal of claim 2 , wherein the base polymer is selected from 19-51% acrylonitrile butadiene rubber and the plant-based polysaccharide is carrot fiber.5. The self-healing hydraulic seal of claim 4 , wherein the water-swellable elastomeric composition further comprises a diffusion promoter and a fluid retaining agent claim 4 , wherein the diffusion promoter is selected from the group consisting of sodium acetate claim 4 , potassium acetate claim 4 , sodium formate claim 4 , potassium formate claim 4 , sodium triphosphate claim 4 , potassium triphosphate claim 4 , sodium polyphosphate claim 4 , potassium polyphosphate claim 4 , sodium carbonate claim 4 , potassium carbonate claim 4 , or ...

PVC-FREE CLOSURES

The present invention relates to compositions (compounds) which can be used as seal material in vessel caps, even under pasteurization conditions and possibly sterilization conditions. More specifically, the invention relates to such compositions that are suitable for vessel caps that can be unscrewed, such as lug screw caps and in particular Press-on/Twist-off® caps, and that result in a reduced migration of undesirable substances. 1. A vessel cap made of metal or plastic for a vessel for receiving foods or beverages , comprising a seal insert made of a seal material which comprises at least one polymer mixed with further substances , whereinthe seal material contains no PVC and substantially no crosslinked polymers;the seal insert can be pasteurized at temperatures up to 98° C., and can be sterilized at temperatures up to 132° C.;the seal material, in relation to the total weight of the seal material, comprises at least 5% by weight of a styrene-based block copolymer, at least 10% of a propylene polymer, polyolefin polymer, or propylene copolymer, and at least one oil component.2. The vessel cap of claim 1 , wherein the styrene-based block copolymer in the seal material is selected from the group consisting of a styrene-butylene-styrene block copolymer (SBS) claim 1 , a styrene-ethylene-butylene-styrene block copolymer (SEBS) claim 1 , and a styrene-isobutylene-styrene block copolymer (SIBS).3. The vessel cap of claim 1 , wherein the polyolefin polymer in the seal material linear low-density polyethylene (LLDPE).4. The vessel cap of claim 1 , wherein the oil component in the seal material is white oil.5. (canceled)6. (canceled)7. The vessel cap of claim 1 , wherein the quantity of the oil component is between 5% by weight and 50% by weight in relation to the total weight of the seal material.8. (canceled)9. The vessel cap as claimed in claim 1 , wherein the seal material further comprises one or more polymers claim 1 , extenders claim 1 , lubricants claim 1 , ...

PHOTOCURABLE SEALANT COMPOSITION, ARTICLE AND ORGANIC SOLAR CELL

The disclosure relates to a photocurable sealant composition comprising (A) a liquid rubber, (B) a (meth)acryloyl group-containing compound, (C) an aromatic sensitization aid capable of absorbing light having a wavelength of 300 nm or higher, and (D) a photopolymerization initiator. The disclosure also relates to an article selected from the group consisting of a solar cell, a display, an electronic component, a coating material and an adhesive, comprising a cured product of the photocurable sealant composition. The disclosure further relates to an organic solar cell wherein a light blocking member is disposed on a first surface of a first electrode substrate, and a sealant is positioned at least at a light blocking part on a side opposite to the light incident surface side, of the light blocking member. 1. A photocurable sealant composition comprising:(A) a liquid rubber;(B) a (meth)acryloyl group-containing compound;(C) an aromatic sensitization aid capable of absorbing light having a wavelength of 300 nm or higher; and(D) a photopolymerization initiator.2. The photocurable sealant composition according to claim 1 , wherein an SP value of the component (A) is 6 to 9.3. The photocurable sealant composition according to claim 1 , wherein the component (A) is an ethylene-propylene terpolymer copolymer or a liquid saturated elastomer.4. The photocurable sealant composition according to claim 1 , wherein the photocurable sealant composition comprises 10 to 200 parts by mass of the component (B) per 100 parts by mass of the component (A).5. The photocurable sealant composition according to claim 1 , wherein the component (D) comprises two or more photopolymerization initiators differing in absorption wavelength.6. The photocurable sealant composition according to claim 1 , wherein a substrate to which the photocurable sealant composition is applied is an organic resin.7. An article selected from the group consisting of a solar cell claim 1 , a display claim 1 , an ...

Hybrid thermoplastic gels and their methods of making

Methods, compositions, apparatuses, and systems are provided for a hybrid thermoplastic gel or sealant. The methods comprise providing (a) a base polymer having at least one functional group capable of crosslinking, (b) a functionalized extender, and (c) heat, and reacting the base polymer and functionalized extender in the presence of the heat to form the hybrid thermoplastic gel. The gel composition may comprise 5-40 wt % of a base polymer, 60-95 wt % of a functionalized extender, and 0-10 wt % of a crosslinker. A closure or interconnect system may comprise a housing, a cable, and a hybrid thermoplastic gel or sealant. A telecommunications apparatus may comprise a telecommunications component and a sealant that forms a seal with the telecommunications component. The sealant may comprise a sealant material having a first range of elongation followed by a second range of elongation.

NBR COMPOSITION FOR RUBBER LAMINATED METAL

An NBR composition for rubber laminated metal, having 1 to 3 parts by weight of sulfur and 1 to 15 parts by weight of a disulfide compound such as 4,4′-dithiodimorpholine or dithiocaprolactam represented by the general formula RN-S-S-NR (wherein RN is a cyclic linking group formed together with the N atom bonded to the S atom), based on 100 parts by weight of NBR. The rubber composition that can improve the protrusion properties of a rubber layer when used for, for example, a gasket or a brake shim material that is a laminated composite metal laminated with another metal plate. 1. An NBR composition for rubber laminated metal , comprising 1 to 3 parts by weight of sulfur and 1 to 15 parts by weight of a disulfide compound represented by the general formula RN-S-S-NR , wherein RN is a cyclic linking group formed together with the N atom bonded to the atom , based on 100 parts by weight of NBR.2. The NBR composition for rubber laminated metal according to claim 1 , wherein the disulfide compound is 4 claim 1 ,4′-dithiodimopholine or dithiodicaprolactam.3. The NBR composition for rubber laminated metal according to claim 1 , wherein 15 parts by weight or less of other sulfur-containing vulcanization accelerators are further added.4. A rubber laminated metal plate in which a vulcanizate layer of the NBR composition according to is laminated on a metal plate.5. A gasket comprising the rubber laminated metal plate according to .6. A brake shim material comprising a rubber laminated metal in which the laminated composite metal according to is laminated with another metal plate.7. The NBR composition for rubber laminated metal according to claim 2 , wherein 15 parts by weight or less of other sulfur-containing vulcanization accelerators are further added. The present disclosure relates to an NBR composition for rubber laminated metal. More particularly, the present disclosure relates to an NBR composition for rubber laminated metal that forms a rubber layer of a brake shim ...

Encapsulating composition

The present application relates to a composition for encapsulating an organic electronic element and an organic electronic device comprising the same, and provides the composition which forms an encapsulating structure capable of effectively blocking water or oxygen introduced from the outside into the organic electronic device, thereby securing the lifetime of the organic electronic device and implementing endurance reliability of the encapsulating structure at high temperature and high humidity, and has high shape retention characteristics, and an organic electronic device comprising the same.

Supported catalysts for manufacture of polymers

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a Group 4 metal complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.

Supported catalysts for manufacture of polymers

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a Group 4 metal complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.

Isotactic propylene copolymers, their preparation and use

ISOTACTIC PROPYLENE COPOLYMERS, THEIR PREPARATION AND USE Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt%, (iii) a skewness index, Six greater than about -1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma- form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst. These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

Thermoplastic elastomer compositions

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a molecular weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alpha olefin copolymer, and a melting point T max of at least 120° C.

Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent

A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characterized as having 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In another embodiment, the copolymer is characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene, and as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers

Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene homo- or copolymer. The impact modifying copolymers are characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene and, in certain embodiments, as having at least one, preferably two or more, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Thermoplastic elastomer compositions

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a molecular weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alpha olefin copolymer, and a melting point T max of at least 120° C.

Isotactic propylene copolymers, their preparation and use

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst. These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

Films comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsaturated comonomers are the C 4-20 α-olefins, C 4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Thermoplastic elastomer compositions

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a moleculare weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alpha olefin copolymer, and a melting point T max of at least 120° C.

Thermoplastic elastomer compositions

A unique thermoplastic olefin composition having: (a) at least 40 percent by weight of a propylene-alpha olefin copolymer based on the total weight of polymers in the composition, the propylene-alpha olefin copolymer having at least 60 percent by weight units derived from propylene, at least 6 percent by weight units derived from an alpha olefin, a molecular weight distribution less than 3.5, and a broad composition distribution; and (b) at least 20 percent by weight of a polypropylene based on the total weight of polymers in the composition, the polypropylene having at least 93 percent by weight units derived from propylene, a molecular weight distribution of greater than 3.5, a heat of fusion greater than the heat of fusion exhibited by the propylene-alpha olefin copolymer, and a melting point T max of at least 120° C.

Homogeneously branched ethylene α-olefin interpolymer compositions for use in gasket applications

This application relates to flexible gaskets formed from blends of linear or substantially linear homogeneously branched ethylene/α-olefin interpolymers and that possess improved processability as well as low temperature resistance and resistance to staining and attack by microbes. Such gaskets do not require formulation other than the addition of color, to produce a functional product. The gaskets of the present invention do not impact negatively on the environment and are also relatively inexpensive to produce.

Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent

A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characterized as having 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In another embodiment, the copolymer is characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene, and as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Blends and sealant compositions comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C 4-20 α-olefins, C 4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent

A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characterized as having 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In another embodiment, the copolymer is characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene, and as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent

A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characterized as having 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity. In another embodiment, the copolymer is characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene, and as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Films comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt%) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C 4-20 α-olefins, C 4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-forn crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Films comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt %) propylene; and (B) at least 5 wt % ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C 4-20 α-olefins, C 4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers

Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene homo- or copolymer. The impact modifying copolymers are characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene and, in certain embodiments, as having at least one, preferably two or more, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Impact resistance polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers

Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene homo- or copolymer. The impact modifying copolymers are characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene and, in certain embodiments, as having at least one, preferably two or more, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Gaskets made from olefin polymers

Gaskets comprising either at least one homogeneously branched ethylene polymer or at least one elastic substantially linear ethylene polymer, at least one ethylene/carboxylic acid interpolymer; and at least one slip agent are disclosed. These gaskets may also contain enhanced polyethylenes produced by the direct polymerization of various combinations of novel elastic substantially linear olefin polymers in multiple reactors using either single or multiple catalysts. These gaskets may also be comprised of at least one ethylene polymer and at least one ionomer. The above mentioned gaskets may also contain slip agents and/or foaming agents. The gaskets are particularly useful for sealing food and liquid containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications. Gaskets comprising substantially linear ethylene polymers have processability similar to highly branched low density polyethylene (LDPE), but the strength and toughness of linear low density polyethylene (LLDPE).

Mechanically sealing closure for vessels

Peelable seal and method of making and using same

A peelable seal comprises a mixture of at least two immiscible polymers. The first polymer forms a continuous phase in the peelable seal, whereas the second polymer is dispersed in the continuous phase. For example, a peelable seal can also be made from a mixture of an ethylene polymer with a melt index in the range from about 0.1 to about 20 g/10 minutes and a propylene polymer with a melt flow rate in the range from about 0.01 to about 2 g/10 minutes. The two polymers define a shear viscosity differential:Δ=¦(θ1-θ2)/θ1¦, wherein θ1 and θ2 are the respective shear viscosity for the first and second polymers at a temperature of 230 °C. and a shear rate of about 100 radian/second. Preferably, the shear viscosity differential is less than about 100 %.

Propylene random copolymer for use in film applications

COPOLÍMERO ALEATÓRIO DE PROPILENO PARA USO EM APLICAÇÕES DE PELÍCULA. A presente invenção se refere a uma composição de polipropileno (P) que compreende um copolímero bimodal de propileno e 1-hexeno preparado na presença de um catalisador de metaloceno, sendo que o dito copolímero bimodal tem uma taxa de fluxo de fusão MFR2 na faixa de 4,0 a 20,0 g/10 min. Ademais, a presente invenção se refere a um método para preparar o copolímero (C) e um artigo que compreende a dita composição de polipropileno (P). PROPYLENE RANDOM COPOLYMER FOR USE IN FILM APPLICATIONS. The present invention relates to a polypropylene (P) composition comprising a bimodal copolymer of propylene and 1-hexene prepared in the presence of a metallocene catalyst, said bimodal copolymer having a melt flow rate MFR2 in the range of 4.0 to 20.0 g/10 min. Furthermore, the present invention relates to a method for preparing copolymer (C) and an article comprising said composition of polypropylene (P).

Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers

Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene homo- or copolymer. The impact modifying copolymers are characterized as comprising at least about 60 weight percent (wt %) of units derived from propylene and, in certain embodiments, as having at least one, preferably two or more, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Isotactic propylene copolymers, their preparation and use

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

Peelable seal and method of making and using same

A peelable seal comprises a mixture of at least two immiscible polymers. The first polymer forms a continuous phase in the peelable seal, whereas the second polymer is dispersed in the continuous phase. For example, a peelable seal can also be made from a mixture of an ethylene polymer with a melt index in the range from about 0.1 to about 20 g/10 minutes and a propylene polymer with a melt flow rate in the range from about 0.01 to about 2 g/10 minutes. The two polymers define a shear viscosity differential: Δ=|(η 1 −η 2 )/η 1 |, wherein η 1 and η 2 are the respective shear viscosity for the first and second polymers at a temperature of 230° C. and a shear rate of about 100 radian/second. Preferably, the shear viscosity differential is less than about 100%.

Homogeneously branched ethylene/alpha-olefin interpolymer compositions for use in gasket applications

Flexible gaskets are formed from blends of ethylene/α-olefin interpolymers which contain long chain branching and that possess improved processability as well as low temperature resistance and resistance to staining and attack by microbes. Such gaskets do not require formulation other than the addition of color, to produce a functional product. The gaskets of the present invention do not impact negatively on the environment and are also relatively inexpensive to produce.

Mechanically sealing closure for receptables

The present invention relates to a closure giving a tight mechanical seal and preferably made from metal or plastic, with an insert on its inner side as a sealing element for containers, in particular for bottles and glassware, where the insert is composed of at least one polyolefin which can be prepared using catalysts selected from the class consisting of the metallocenes.

Gaskets made from olefin polymers

Gaskets comprising either at least one homogeneously branched ethylene polymer or at least one elastic substantially linear ethylene polymer, at least one ethylene/carboxylic acid interpolymer; and at least one slip agent are disclosed. These gaskets may also contain enhanced polyethylenes produced by the direct polymerization of various combinations of novel elastic substantially linear olefin polymers in multiple reactors using either single or multiple catalysts. These gaskets may also be comprised of at least one ethylene polymer and at least one ionomer. The above mentioned gaskets may also contain slip agents and/or foaming agents. The gaskets are particularly useful for sealing food and liquid containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications. Gaskets comprising substantially linear ethylene polymers have processability similar to highly branched low density polyethylene (LDPE), but the strength and toughness of linear low density polyethylene (LLDPE).

Supported catalysts for manufacture of polymers

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a Group 4 metal complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.

Cap Liners, Closures, and Gaskets from Multi-Block Polymers

A polymer composition comprises at least an ethylene/α-oleiln interpolymer and at least one other polymer. The other polymer can be selected from a second ethylene/α-olefin interpolymer, an elastomer, a polyolefin, a polar polymer, and an ethylene/carboxylic acid interpolymer or ionomer thereof. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Also provided are gaskets, bottle cap liners, and closures that comprise or obtained from a compositon comprising at least one ethylene/α-olefin interpolymer and at least one polyolefin. The gaskets are capable of compression sealing various containers, without contaminating the contents. Liquid containers particularly benefit from the use of the novel gasket materials disclosed herein.

Cap liners, closures, and gaskets from multi-block polymers

A polymer composition comprises at least an ethylene/α-oleiln interpolymer and at least one other polymer. The other polymer can be selected from a second ethylene/α-olefin interpolymer, an elastomer, a polyolefin, a polar polymer, and an ethylene/carboxylic acid interpolymer or ionomer thereof. The ethylene/α-olefin interpolymer is a block copolymer having at least a hard block and at least a soft block. The soft block comprises a higher amount of comonomers than the hard block. The block interpolymer has a number of unique characteristics disclosed here. Also provided are gaskets, bottle cap liners, and closures that comprise or obtained from a compositon comprising at least one ethylene/α-olefin interpolymer and at least one polyolefin. The gaskets are capable of compression sealing various containers, without contaminating the contents. Liquid containers particularly benefit from the use of the novel gasket materials disclosed herein.

Ultra high purity rubber

Rubbers with tunable levels of metal containing anti-agglomerants

The invention relates to an efficient process for the preparation and isolation of rubber particles formed in aqueous media having a tunable level of metal containing anti-agglomerants and rubber particles obtained thereby. The invention further relates to copolymer products comprising the same or derived therefrom.

Isotactic propylene copolymers, their preparation and use

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt%, (iii) a skewness index, S¿ix?, greater than about -1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst. These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

Isotactic propylene copolymers, their preparation and use

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

Isotactic propylene copolymers, their preparation and use

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13 C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content of the copolymer is at least about 3 wt %, (iii) a skewness index, S ix , greater than about −1.20, (iv) a DSC curve with a T me that remains essentially the same and a T max that decreases as the amount of comonomer in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta catalyst These polypropylene polymers are made using a nonmetallocene, metal-centered, heteroaryl ligand catalyst. These polymers can be blended with other polymers, and are useful in the manufacture of films, sheets, foams, fibers and molded articles.

α－オレフィン・非共役環状ポリエン共重合体及びその製造方法、ならびに該共重合体を用いた架橋可能な組成物

　本発明のα－オレフィン・非共役環状ポリエン共重合体（Ａ）は、α－オレフィンに由来する構成単位（Ｉ）と、ビニル基を含有する環状オレフィンに由来する構成単位（II）とを含み、分子量分布（Ｍｗ／Ｍｎ）が２．７以下であり、非晶性もしくは結晶融解熱（ΔＨ）が９０ｋＪ／ｋｇ未満の低結晶性である。該共重合体は、フェノキシイミン骨格を有する配位子を持つ特定の遷移金属触媒から効率的に製造される。 　本発明の共重合体は、既存の共重合体に比較して分子量分布が狭く、且つビニル基含有量が高いため、該共重合体からは引張特性に優れた架橋物を得ることができ、またゴムなどの重合体の可塑剤として用いた場合には、加工性、架橋物の機械強度、ゴム弾性などに優れた性能を示す。さらに、該共重合体に含まれるビニル基部分を極性基に変換することによって、様々な機能が付与されたポリオレフィン系材料を提供することができる。

FIBERS OF ISOTAKTIC PROPYLENE COPOLYMERISATE, THEIR PREPARATION AND USE

Propylene random copolymer for use in film applications

The present invention is directed to a polypropylene composition (P) comprising a bimodal copolymer of propylene and 1-hexene prepared in the presence of a metallocene catalyst, said bimodal copolymer having a melt flow rate MFR2 in the range of 4.0 to 20.0 g/10 min. Further, the present invention is directed to a method for preparing the copolymer (C) and an article comprising said polypropylene composition (P).

Foamed gaskets made from homogeneous olefin polymers

Foamed gaskets comprising at least one homogeneously branched ethylene polymer and at least one blowing agent are disclosed. The gaskets are particularly useful for sealing food and liquid containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications.

Gaskets made from homogeneous linear olefin polymers

Gaskets comprising at least one homogeneous linear ethylene polymer are disclosed. The gaskets are particularly useful for sealing beverage containers and do not contribute to taste and/or odor of the packaged product, which is especially useful in food-stuff applications.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

SEALING JOINTS PREPARED FROM NEW ELASTIC POLYMERS SUBSTANTIALLY OF OLEFINS.

SE PRESENTAN EMPAQUETADURAS QUE COMPRENDEN AL MENOS UN POLIMERO DE ETILENO ELASTICO, SUBSTANCIALMENTE LINEAL. LAS EMPAQUETADURAS SON PARTICULARMENTE UTILES PARA SELLAR ENVASES DE ALIMENTOS Y DE LIQUIDOS Y NO CONTRIBUYEN A DAR OLOR Y/O SABOR AL PRODUCTO EMPAQUETADO, LO CUAL ES ESPECIALMENTE UTIL EN APLICACIONES ALIMENTARIAS. LOS POLIMEROS DE ETILENO SUBSTANCIALMENTE LINEALES TIENEN UNA PROCESABILIDAD SIMILAR AL POLIETILENO ALTAMENTE RAMIFICADO, DE BAJA DENSIDAD (LDPE), PERO LA RESISTENCIA Y LA RIGIDEZ DEL POLIETILENO LINEAL DE BAJA DENSIDAD (LLPDE). GASKETS ARE PRESENT, INCLUDING AT LEAST ONE ELASTIC, SUBSTANTIALLY LINEAR, ETHYLENE POLYMER. THE PACKINGS ARE PARTICULARLY USEFUL FOR SEALING FOOD AND LIQUID CONTAINERS AND DO NOT CONTRIBUTE TO SMELL AND / OR TASTE THE PACKAGED PRODUCT, WHICH IS ESPECIALLY USEFUL IN FOOD APPLICATIONS. SUBSTANTIALLY LINEAR ETHYLENE POLYMERS HAVE A PROCESSABILITY SIMILAR TO HIGHLY BRANCHED, LOW DENSITY POLYETHYLENE (LDPE), BUT THE STRENGTH AND RIGIDITY OF LOW DENSITY LINEAR POLYETHYLENE (LLPDE).

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

UV curable elastomer composition

Ethylene copolymer elastomer compositions, acrylate rubber compositions, nitrile rubber compositions, fluoroelastomer compositions, and chlorinated olefin elastomer compositions are provided which are curable by exposure to UV radiation. The compositions are particularly suited for production of elastomeric seals using hot melt equipment and a gasketing in place technique.

Gaskets made from elastic substantially linear olefin polymers

Composition for cap liner

A cap liner composition, which has an excellent gas barrier property and sanitary characteristics and can be opened easily in an actual use, and which is used for a sealing material for a beverage cap, is provided. A cap liner using the composition is provided as well. The cap liner composition includes (a) 100 weight parts of isobutylene-based block copolymer formed of a polymer block based on isobutylene and a polymer block formed of a monomer ingredient not based on isobutylene, and (b) 0.1 to 20 weight parts of lubricant added to the (a) isobutylene-based block copolymer.

Edge sealants having balanced properties

A sealant composition for use in two-pane or multi-pane insulating glass or solar modules, the sealant composition including: a) an olefinic polymer having a number average molecular weight from about 100 D to about 700,000 D, preferably from about 100 D to about 300,000 D; b) a modified olefinic polymer; c) a fine-particle inert filler; d) at least one of a desiccant and a water scavenger, and e) an aging resistor. The sealant composition has a tensile strength greater than 20 PSI, preferably greater than 50 PSI, a lap shear strength greater than 20 PSI, preferable greater than 40 PSI, and the tensile and lap shear strengths balanced such that the sealant fails cohesively before failing adhesively.

Composition for cap liner

A composition for cap liners which are for use as a sealing material for caps for beverage bottles and which have excellent gas-barrier properties, are highly hygienic, and enable easy cap opening at the time of actual use; and a cap liner comprising the composition. The composition for cap liners comprises (a) 100 parts by weight of an isobutylene block copolymer comprising a polymer block comprising isobutylene units as a main component and a polymer block composed of monomer units in which isobutylene units are not a main component and (b) 0.1-20 parts by weight of a lubricant added thereto.

Films comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt%) propylene; and (B) at least 5 wt% ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 α-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt%, (iii) a skewness index, S¿ix?, greater than about -1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Films containing isotactic propylene copolymers

包含全同立构丙烯共聚物的膜

具有优异纵向(MD)撕裂性能的膜包括至少一个从聚合物制备的层，该聚合物包括：(A)至少50重量%(wt%)丙烯；和(B)至少5wt%乙烯和/或一种或多种不饱和共聚单体。组分(B)不饱和共聚单体的代表是C 4-20 α-烯烃、C 4-20 二烯烃、苯乙烯类化合物等。优选地，膜具有至少一种如下性能：(i)小于约10%的光雾度值、(ii)大于约60的45度光泽、和(iii)和大于约100g/密耳的落镖值。在一个优选的实施方案中，层包括共聚物，该共聚物的特征为具有至少一种如下性能：(i)在约14.6和约15.7ppm下相应于区域-误差的 13 C NMR峰，所述峰强度大约相等、(ii)当共聚物的共聚单体含量，即衍生自乙烯和/或不饱和共聚单体的单元至少为约3wt%时大于约1.4的B-值、(iii)大于约-1.20的倾斜度指数S ix 、(iv)具有T me 保持基本不变和T max 在共聚物中共聚单体，即衍生自乙烯和/或不饱和共聚单体的单元的数量增加时该T max 降低的DSC曲线、和(v)X-射线衍射图样，与所有方面具有可比性而区别在于它由齐格勒-纳塔(Z-N)催化剂制备的共聚物相比，该衍射图样显示更多的γ-形式晶体。

Supported polymerization catalysts comprising a polyvalent lewis base ligand

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a Group 4 metal complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.

SUPPORTED CATALYSTS FOR THE MANUFACTURE OF POLYMERS

Supported catalyst for polymer production

Supported catalysts for manufacture of polymers

A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising: 1) a substrate comprising the reaction product of a solid, particulated, high surface area, metal oxide, metalloid oxide, or a mixture thereof and an organoaluminum compound, 2) a Group 4 metal complex of a polyvalent, Lewis base ligand; and optionally, 3) an activating cocatalyst for the metal complex.

Films comprising isotactic propylene copolymers

Films with excellent machine direction (MD) tear properties comprise at least one layer made from a polymer comprising: (A) at least 50 weight percent (wt%) propylene; and (B) at least 5 wt% ethylene and/or one or more unsaturated comonomers. Representative of component (B) unsatuarated comonomers are the C4-20 α-olefins, C4-20 dienes, styrenic compounds, and the like. Preferably, the film has at least one of a (i) haze value of less than about 10, (ii) 45 degree gloss of greater than about 65, and (iii) dart value of greater than about 100 g/mil. In one preferred embodiment, the layer comprises a compolymer characterized as having at least one of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity, (ii) a B-value greater than about 1.4 when the comonomer content, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), of the copolymer is at least about 3 wt%, (iii) a skewness index, S¿ix?, greater than about -1.20, (iv) a DSC curve with a Tme that remains essentially the same and a Tmax that decreases as the amount of comonomer, i.e., the units derived from ethylene and/or the unsaturated comonomer(s), in the copolymer is increased, and (v) an X-ray diffraction pattern that reports more gamma-form crystals than a comparable copolymer prepared with a Ziegler-Natta (Z-N) catalyst.

Films containing isotactic propylene copolymers