Abstract: Disclosed is a method for producing a norbornene monomer composition, a norbornene polymer produced using the norbornene monomer composition, an optical film including the norbornene polymer, and a method for producing the norbornene polymer. The method includes reacting a reaction solution that contains cyclopentadiene, dicyclopentadiene, or a mixture of cyclopentadiene and dicyclopentadiene, an acetate compound, and a solvent so that a content of an exo isomer is 50 mol % or more. Variables such as a reaction temperature, a reaction time, a molar ratio between reactants, and addition of a solvent are controlled so that the exo isomer is contained in content of 50 mol % or more. Accordingly, it is possible to industrially produce an acetate norbornene addition polymer by using the acetate norbornene monomer composition containing the exo isomer in content of 50 mol % or more.

Abstract: A heterogeneous polymer blend comprises a dispersed phase comprising a thermoplastic first polymer having a crystallinity of at least 30% and a continuous phase comprising a second polymer different from the first polymer. The second polymer has a crystallinity of less than 20% and is at least partially cross-linked.

Abstract: The present invention relates to an acrylic pressure-sensitive adhesive including: a) an acrylic polymer containing, as a monomer unit, an alkyl (meth)acrylate including an alkyl group having 1 to 20 carbon atoms in an amount of 50% by weight or more; and b) a tackifier resin, in which the acrylic polymer a) contains two kinds of monomer units having a difference in solubility parameter (SP value) of 0.2 (MPa)1/2 or more, each in an amount of 15% by weight or more.

Abstract: A polyester resin having excellent dimensional stability against environmental changes and excellent dimensional stability in the processing step while having excellent moldability and a biaxially oriented polyester film comprising the same. The polyester resin comprises a recurring unit represented by the following formula (A) and a recurring unit represented by the following formula (B) as the main constituents: —O—C(O)—R1—C(O)—O—R2—O—??(A) —O—C(O)—R3—C(O)—O—R2—O—??(B) (R1 is a phenylene group or naphthalenediyl group, R2 is an alkylene group having 2 to 4 carbon atoms or cyclohexylene group, and R3 is 6,6?-(alkylenedioxy)di-2-naphthoic acid), wherein the content of the recurring unit (B) is not less than 5 mol % and less than 50 mol %, and the ratio of adjacent recurring units (A) and (B) is less than 0.9 based on a value obtained by doubling the product of the content of the recurring unit (A) and the content of the recurring unit (B).

Abstract: Embodiments of the invention provide a class of mesophase separated butene/?-olefin block interpolymers with controlled block sequences. The butene/?-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to about 1.0 and a molecular weight distribution, Mw/Mn, greater than about 1.4. Preferably, the block index is from about 0.2 to about 1. In addition or alternatively, the block butene/?-olefin interpolymer is characterized by having at least one fraction obtained by Temperature Rising Elution Fractionation (TREF'), wherein the fraction has a block index greater than about 0.3 and up to about 1.0 and the butene/?-olefin interpolymer has a molecular weight distribution, Mw/Mn, greater than about 1.4.

Abstract: A cyclic olefin resin composition which includes (A) 35 to 85 parts by weight of a cyclic olefin polymer having a glass transition temperature of 60 to 200° C., (B) 10 to 60 parts by weight of a flexible copolymer, prepared by polymerizing at least two monomers selected from the group consisting of an olefin compound, a diene compound and an aromatic vinyl hydrocarbon compound, and having a glass transition temperature of 0° C. or below, and (C) 5 to 55 parts by weight of a modified polyolefin. The cyclic olefin resin composition further includes, based on 100 parts by weight of total amount of the components (A), (B) and (C), (D) 0.01 to 5 parts by weight of a radical initiator and (E) 0 to 5 parts by weight of a polyfunctional compound having in its molecule two or more radically polymerizable functional groups. The composition can be used as a material for a substrate having low permittivity, low dielectric tangent, low water absorbability, and excellent heat resistance.

Abstract: A method of preparing a thermoplastic vulcanizate, the method comprising continuously dynamically vulcanizing a rubber within a blend with a thermoplastic resin, where the dynamic vulcanization is effected with a cure system that includes a free-radical cure agent, and a coagent-wetted carrier where the coagent-wetted carrier includes a multi-functional acrylate coagent, a multi-functional methacrylate coagent, or both a multi-functional acrylate and multi-functional methacrylate coagent.

Abstract: A hybrid polymer has a structure in which a polyolefin segment and a polar polymer segment are connected not via a bonding group containing a heteroatom. A method of the invention produces the hybrid polymer with industrial advantages. The hybrid polymer includes a polyolefin segment (A) and a polar polymer segment (B), the polar polymer segment being obtained by radical polymerization of a radically polymerizable monomer.

Abstract: A process for producing thermoplastic vulcanizates, the process comprising (i) dynamically vulcanizing a rubber with a curative in a first stage, where the rubber is within a blend that includes the rubber, a thermoplastic resin, and the curative, where said step of dynamically vulcanizing occurs at a temperature at or above the melting point of the thermoplastic resin, where said step of dynamically vulcanizing employs a peroxide curative, and where said rubber includes polymeric units deriving from 5-vinyl-2-norbornene, (ii) continuing said step of dynamically vulcanizing to cause phase inversion of the blend to thereby convert the thermoplastic resin into a continuous phase, (iii) maintaining the blend at or above the melting point of the thermoplastic resin after the phase inversion, and (iv) introducing molten thermoplastic resin into the blend in a second stage, where said step of introducing molten thermoplastic resin occurs after phase inversion but before the blend is cooled to a temperature below th

Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition, a polarizing plate and a liquid crystal display device, using the same. More specifically, the present invention relates to an acrylic pressure-sensitive adhesive composition having optimal stress releasing property which comprises an optically compensated acrylic copolymer (A) containing a cross-linkable functional group, an optically compensated acrylic copolymer (B) containing no cross-linkable functional group, and a multi-functional cross-linking agent (C). A polarizing plate and a liquid crystal display device comprising the pressure-sensitive adhesive composition meets with major properties such as adhesion endurance reliability, with effectively providing optical compensation effect and stress release effect, and has an effect of improving a light leakage phenomenon.

Abstract: A process for producing packaging composed of thermoformable film composed of thermoplastic polyolefins provides the thermoforming of the film at temperatures in the range from 70 to 170° C., thus giving packaging which has a high heat distortion temperature in the range from 60 to 200° C. and which has a high water-vapor barrier. The thermoformable film comprises an amount in the range from 5 to 100% by weight of COC with a glass transition temperature Tg in the range from 65 to 200° C.

Abstract: Linear block copolymers that have at least one hydrophilic block and at least one hydrophobic block, wherein the hydrophilic block of the copolymer has at least one carboxylic acid functionality (or salt thereof) that can readily decarboxylate. These copolymers are useful as binders and/or dispersants in inkjet inks.

Abstract: A novel optical film is provided that exhibits a wavelength dispersion (a reverse wavelength dispersion) such that the birefringence of the film decreases as the wavelength becomes shorter, at least in the visible light range. The optical film includes a layer formed of a resin (A) having a heteroaromatic group or a molecular structure represented by the following formula (1), (2) or (3): where in the formula (1), n is a natural number in the range of 1 to 4, and R1 and R2 each independently represent a hydrogen atom or a methyl group. The optical film exhibits a wavelength dispersion such that the birefringence of the film decreases as the wavelength becomes shorter, at least in the visible light range.

Abstract: Adhesive composition for bonding and filling large assemblies, including a mixture of about 5 percent to about 75 percent by weight of a thermoplastic polymer, about 0.5 percent to about 35 percent by weight of a polyester resin or vinyl ester resin, and about 20 percent to about 80 percent by weight of an alkyl acrylate or methacrylate monomer.

Abstract: The present invention relates to a polycycloolefin (PCO) thermoset network assembly and a process for its preparation obtainable by polymerising a first reactive composition comprising a norbornene-type cycloolefin monomer in the presence of a Mo- or W-catalyst to obtain a PCO-Mo/W-network and polymerising a second reactive composition comprising a nor-bornene-type cycloolefin monomer in the presence of a Ru-catalyst on said PCO-Mo/W-network to obtain a PCO thermoset network assembly.

Abstract: Adhesive compositions and a method for selecting adhesive compositions are disclosed herein. Preferred adhesives generally have small domains and/or a homogeneous domain distribution. The method of selecting adhesives is based on size and distribution of the domains.

Abstract: A hot melt adhesive composition comprising: (a) a functional copolymer obtained from copolymerization of ethylene and a comonomer selected from maleic anhydride, citraconic anhydride, itaconic anhydride, tetrahydrophthalic anhydride, maleic acid, citraconic acid, itaconic acid, fumaric acid, tetrahydrophthalic acid, the corresponding salts, monoesters and diesters of these acids, and mixtures of any of these, wherein the functional copolymer is present in an amount from about 5 to about 95 weight % of the combined total amount of (a) and (b); and (b) at least one ethylene copolymer obtained from copolymerization of ethylene with a polar monomer wherein said polar comonomer is present in the copolymer in an amount of from 8 to 40 weight %, wherein said ethylene copolymer is selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/alkyl (meth)acrylate copolymers and ethylene/alkyl (meth)acrylate/carbon monoxide terpolymers, in an amount from about 5 to about 95 weight % of the combined

Abstract: A process for producing a thermoplastic elastomer composition comprising the step of crosslinking dynamically at least the following components (A) to (C) in the presence of a crosslinking agent: (A) 10 to 50% by weight of an oil-extended ethylene-?-olefin-non-conjugated diene copolymer rubber having a density of 850 to 900 kg/m3, and a Mooney viscosity (ML1+4 100° C.) of 30 to 150, (B) 20 to 60% by weight of an ethylene-?-olefin copolymer having a density of 850 to 910 kg/m3, and a melt flow rate of 0.05 to 80 g/10 minutes measured at 230° C. under a load of 21.18 N, and (C) 20 to 60% by weight of a propylene resin, the total amount of the components (A) to (C) being 100% by weight; and an air-bag cover comprising a thermoplastic elastomer composition produced according to said process.

Abstract: The invention is directed to a thermoplastic vulcanizate composition comprising a rubber and a very low density polyethylene copolymer. Furthermore, the invention is directed to a process for making said thermoplastic vulcanizate composition and articles comprising said thermoplastic vulcanizate composition.

Abstract: A polymer composition includes (1) a crystalline norbornene-based polymer and (2) an amorphous alicyclic structure-containing polymer in a weight ratio of 90:10 to 50:50, the crystalline norbornene-based polymer (1) having a melting point of 110 to 145° C., an Mw measured by gel permeation chromatography of 50,000 to 200,000, and a ratio Mw/Mn of 1.5 to 10.0, and obtained by ring-opening polymerization of a polymerizable monomer mixture (1) containing 90 to 100 wt % of 2-norbornene and 0 to 10 wt % of a substituent-containing norbornene monomer, and hydrogenating the resulting polymer, and the amorphous alicyclic structure-containing polymer (2) having a Tg of 50° C. or more and not having a melting point, and obtained by polymerization of a polymerizable monomer mixture (2) containing a 2-norbornene compound and a dicyclopentadiene compound in an amount of 50 wt % or more and less than 90 wt % in total. A film obtained by molding the polymer composition has a steam permeability of 0.

Abstract: An aromatic ring-containing polymer, a polymer mixture, an antireflective hardmask composition, and a method for patterning a material on a substrate, the aromatic ring-containing polymer including at least one aromatic ring-containing polymer represented by Formulae 1, 2, or 3.

Abstract: This invention relates to use of a polymer composition for rotomoulding, wherein said composition comprises: (i) at least two propylene polymer components; and (ii) a nucleating agent.

Abstract: This invention relates to use of a polymer composition for rotomoulding, wherein said composition comprises: (i) at least two propylene polymer components; (ii) a nucleating agent; and (iii) an impact modifier.

Abstract: The use of a polyalphaolefin oil or combinations of polyalphaolefin oils to modify the softening point characteristics of a tackifier and compositions containing a tackifier and polyalphaolefin oil are disclosed herein.

Abstract: Disclosed is a method of manufacturing a biaxial polynorbornene-film having a compensation film which has good light transmittance and a uniform in-plane retardation value and can function as both a negative C-plate and an A-plate.

Abstract: Thermoplastic vulcanizates comprise at least an ethylene/?-olefin interpolymer and at least one thermoplastic polymer, such as polyolefin. The ethylene/?-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. The block interpolymer is either used as a compatibilizer between a vulcanizable elastomer and a thermoplastic polymer or as a vulcanizable elastomer when it is in the EPDM form. The thermoplastic vulcanizates can be profiled extruded to make profiles and gaskets.

Abstract: Each of the thermoplastic resin composition and the optical film of the present invention comprises a cycloolefin-based polymer (A) and a vinyl-based polymer (B) having a structural unit derived from p-isopropenylphenol. The thermoplastic resin composition and the optical film exhibit excellent compatibility of their components with keeping property of low birefringence inherent in the thermoplastic resin composition comprising the cycloolefln-based polymer and the vinyl-based polymer, and they are excellent in weathering resistance and heat resistance.

Abstract: The objective of the present invention is to provide an acrylic ester-based copolymer rubber which gives a rubber product excellent in fuel oil resistance and tensile strength and which is crosslinkable with sulfur and/or an organic peroxide and to provide a process for producing the same, as well as a rubber composition, an oil-resistant and weather-resistant rubber composition, and an oil-resistant and weather-resistant rubber product. The acrylic ester-based copolymer rubber of the present invention comprises a structural unit derived from at least one monomer selected from the group consisting of an acrylic acid alkyl ester and an acrylic acid alkoxyalkyl ester in an amount from 40 to 91.9% by mass, a structural unit derived from an unsaturated nitrile monomer in an amount from 8 to 40% by mass, and a structural unit derived from at least one monomer selected from the group consisting of a non-conjugated cyclic polyene and a compound having a specific structure in an amount from 0.

Abstract: The present invention provides a negative C-plate type optical anisotropic film having negative birefringence along the thickness direction. In particular, the present invention provides a film comprising cycloolefin addition polymer, which is prepared by addition polymerizing norbornene-based monomers, a method for preparing the same, and a liquid crystal display comprising the same. The film of the present invention can be used for optical compensation films of a variety of LCD (liquid crystal display) modes because the refractive index alone the thickness direction can be controlled by the kind and amount of functional groups introduced to the cycloolefin addition polymer.

Abstract: The present invention relates to a unified polarizing plate, which employs, as a protection layer of a polarizing film, a transparent film that can simultaneously function as a negative C-plate and transparent protection layer of a polarizing film and has negative refractive index toward thickness direction, thereby simultaneously performing functions as a negative C-plate for optical compensation and as a polarizing plate, and a method for preparing the same. The unified polarizing plate has superior durability at high temperature and high humidity compared to those employing TAC as a protection layer, and improves wide view angle of liquid crystal display having positive refractive index toward thickness direction, when the liquid crystal display device is ON or OFF.

Abstract: The melt strength of polypropylene is enhanced by blending a cyclo-olefin copolymer into the polypropylene. The cyclo-olefin copolymer comprises an amorphous random copolymer of ethylene and norbornene, the cyclo-olefin copolymer comprising at least about 60 wt. % of norbornene. As a result of the high norbornene content of the COC, the glass transition temperature of the COC is relatively high. In preferred embodiments, the norbornene content ranges from about 60 wt. % to about 85 wt. %, and the glass transition temperature correspondingly ranges from about 55° C. to about 170° C. The COC thus is glassy at room temperature and remains glassy at temperatures significantly above room temperature. The glass transition temperature of the COC is substantially higher than that of the polypropylene in the composition.

Abstract: A process for preparing a surfactant, useful for dispersing tackifier resins in aqueous media, comprises reacting an ?,?-unsaturated carboxylic acid or anhydride, or an ester thereof, with a terpene- or hydrocarbon-based resin to form an adduct, then reacting the adduct with a polyalkylene polyol to yield the surfactant. In a related embodiment, the surfactant is subsequently functionalized. Also disclosed are surfactants prepared using a disclosed process; compositions comprising a disclosed surfactant and a tackifier resin; aqueous dispersions comprising a disclosed surfactant; tackifier resin and water; adhesive compositions comprising a disclosed aqueous dispersion and a polymer latex; and pressure sensitive adhesive overlays prepared using a disclosed adhesive composition.

Abstract: The present invention relates to a norbornene based addition polymer, and more particularly to an addition polymer of norbornene based monomers containing an ester group. The present invention provides a norbornene-ester based addition polymer having a molecular weight (Mn) larger than 20,000 and comprising a norbornene-ester based monomer comprising more than 50 mol % of exo norbornene-ester monomer as a repeating unit, a method for preparing the same, and an optically anisotropic film comprising the same. The norbornene-ester based addition polymer of the present invention is transparent, has a low dielectric constant, has good thermal stability and strength, leaves no unwanted materials when attached to metals or other polymers, and has good adhesivity, so that it can be used for optical films, retardation films, plastic substrate materials, transparent polymers such as POF or PCB, insulating materials, or insulating electronic devices such as PCB or insulating materials.

Abstract: The present invention is intended to provide a thermoplastic resin composition which is inhibited from suffering phase separation and from which an optical film having excellent transparency is readily obtained, an optical film containing the composition as a main component, a retardation film which is a film obtained by stretching the optical film and exhibits positive wavelength dependence and has a small coefficient of photoelasticity and transparency, and a process for producing the retardation film.

Abstract: Graft copolymers with segmented (or block) arms and a process for preparing the same. Such polymers are particularly useful in formulating air-dry clear coat and color coat lacquers used in automotive refinishing.

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: Cycloolefinic polymer compositions exhibiting an advantageous balance of dimensional stability, improved impact resistance and superior optical properties are provided. The cycloolefinic polymer compositions of the invention generally include at least one cycloolefinic polymer and an effective amount of an elastomeric copolymer having an aromatic vinyl content of from 14 to 39 weight percent. The cycloolefinic polymer compositions may be incorporated into a variety of products, including multilayer films.

Abstract: A melt-blended polyethylene/COP composition suitable for making optically clear films with low coefficients of friction includes from about 70 to about 98 weight percent of a polyethylene resin and from about 2 to about 25 weight percent of a first COP resin component, the first COP resin component having a weight average molecular weight of from about 0.5 kg/mol to about 50 kg/mol and being present in an amount effective to increase the relative slip value of films made from the composition as compared with a like film made from the polyethylene resin alone.

Abstract: A heat-shrinkable film includes outer layers containing a polyester resin, and at least one inner layer being arranged between the outer layers and containing an olefinic resin including at least one ethylene-propylene-butene terpolymer. The film has an interlayer bonding strength between the inner layer and the outer layer of 3.0 N/15-mm or more. The inner layer may contain the ethylene-propylene-butene terpolymer in an amount of 45 percent by weight or more based on the total weight of the inner layer. The heat-shrinkable film is excellent in strength, abrasion resistance, solvent resistance, dimensional stability, and optical transparency, exhibits high shrinkability and high flexibility as a result of heating, and thereby yields beautiful finish after shrinkage. The heat-shrinkable film can be suitably recycled after use.

Abstract: The present invention relates to a thermosetting resin composition comprising: (1) a metal salt of a disubstituted phosphinic acid, and (2) a resin having a dielectric constant of 2.9 or less at a frequency of 1 GHz or more, and a prepreg and a laminated board using the same.

Abstract: Physical blends of solid particulates of chlorinated polyolefins and elastomeric ethylene copolymers yield a blended product with anti-blocking characteristics superior to that defined by the weight proportion-based linear interpolation of either blend component. The blend compositions are useful as impact modifiers for polyvinyl chloride compositions.

Abstract: A primer composition comprises (A) a vinyl copolymer obtained through copolymerization of (a-1) a UV-absorbing vinyl monomer, (a-2) an alkoxysilyl group-containing vinyl monomer, and (a-3) another copolymerizable monomer, (B) a curing agent, and (C) a thermoplastic vinyl resin having a Tg of at least 80° C. Polycarbonate resin articles, when covered with an undercoat of the primer composition and an overcoat of an organopolysiloxane composition, exhibit improved transparency, mar resistance, weather resistance, and chemical resistance and find outdoor use as vehicle and building windows and windshields.

Abstract: The present invention provides for a photoresist composition comprising a mixture of two different copolymers.

Abstract: High refractive index, melt processable polyphosphonates and methods for preparing the same are provided. These polymers are particularly useful for optical and ophthalmic parts, such as lenses. A method of preparing optical and ophthalmic lenses by injection molding the polymers of the present invention into the form of the optical or ophthalmic lenses is also provided.

Abstract: The invention is a photoswitchable benzocyclobutene-based polymer that while remaining aqueous developable, avoids the problem of significant moisture uptake. The oligomer or polymer comprises a polymeric backbone, benzocyclobutene reactive groups, and photoswitchable pendant groups. The pendant groups are bonded to the polymeric backbone and are characterized by the presence of a moiety that converts to carboxylic acid upon exposure to activating wavelengths of radiation a carboxylic acid. When the oligomer or polymer is subsequently heated to cause cure of the oligomer or polymer, carbon dioxide is emitted and the group forms a substantially non-polar moiety. The invention is also a method of making such a polymer and a method of forming a patterned film using such a polymer.

Abstract: A melt-moldable, thermoplastic norbornene resin composition characterized by being obtained by compounding (A) a base polymer comprising a thermoplastic norbornene resin with (B) an olefin compound having a number-average molecular weight of 200 to 10,000 and a softening point of 70 to 170° C.; and a molded article or optical film obtained by melt-molding or extrusion-molding the thermoplastic norbornene resin composition.

Abstract: A plastic composition including polymeric nanoparticles having a diameter of 1 to 100 nanometers, and a polymeric component. Also provided is a method for providing such a plastic composition.

Abstract: A cycloolefin copolymer resin having a Hunter b color value of less than 1.0, which resin comprises: (a) a first cycloolefin copolymer having a glass transition temperature of from about 100° C. to about 220° C. and an intrinsic viscosity of from about 5 to about 1000 ml/g as measured in decalin at 135° C., (b) up to about 10% by weight, based on the total weight of the resin, of a second cycloolefin copolymer, said second copolymer having a glass transition temperature of greater than about 50° C. and an intrinsic viscosity of from about 1 to about 500 ml/g as measured in decalin at 135° C., and (c) from about 0.01% to about 3%, based on the total weight of the resin, of at least one lubricant selected from the group consisting of fatty acid esters of aliphatic polyhydric alcohols, with the proviso that the glass temperature of the second cycloolefin copolymer is at least 25° C.

Abstract: A polymer blend for use in a biomedical application comprising: (A) a polymer A, bearing zwitterionic pendant groups; and (B) a hydrophobic addition polymer B, selected from the group consisting silyl(alk)acrylates, alkyl(alk)acrylamides, dialkyl(alk)acrylamides, and alkyl(alk)acrylate polymers, wherein the structure of the blend exhibits phase separation forming a micro-phase segregated structure at a surface. Articles, methods of production and liquid blend compositions are also disclosed. Preferably A is a copolymer of 15 to 30 mole % 2-methacryloyloxyethy1-2-trimethylammonium ethyl phosphate inner salt and 85 to 70 mole % of a C6-18 alkyl methacrylate, and B is a homopolymer of a C4-18 alkyl(meth)acrylate, blended in weight proportions of 1:1 to 1:50.

Abstract: It is an object of the present invention to provide a method of coating a plastic molding which is appropriately applicable to various plastic substrates, an ultraviolet-curable under coating for metal evaporation, which is to be used in that method of coating, and a plastic molding obtained by that method of coating.