Abstract: Isobutene, isoprene, and butadiene are obtained from mixtures of C4 and/or C5 olefins by dehydrogenation. The C4 and/or C5 olefins can be obtained by dehydration of C4 and C5 alcohols, for example, renewable C4 and C5 alcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc.

Abstract: An intraocular lens comprising a polymer that is prepared from a monomer mixture comprising a monomer of formula G-D-Ar??(I) wherein Ar is a C6-C24 aromatic group having a hydrophilic substituent, D is a divalent linking group, and G is a reactive functional group selected from the group consisting of acryloyl, acryloyloxy, methacryloyl, methacryloyloxy and mercapto. The polymer has an equilibrium water content of greater than 4.5 percent by weight.

Abstract: The present invention relates to an acrylic pressure sensitive adhesive composition comprising a monomer containing linear carbonate having an antistatic property. The acrylic pressure sensitive adhesive composition exhibits an excellent balance between low-rate peel strength and high-rate peel strength, and is capable of lowering the content of an antistatic agent. It also provides excellent releasable property, and protection of the surface of a polarizer due to proper wettability.

Abstract: A subject-matter of the invention is alkoxyamines resulting from ?-phosphorated nitroxides corresponding to the formula: in which R represents an alkyl radical having a number of carbon atoms ranging from 1 to 3, R1 represents a hydrogen atom or a residue: in which R3 represents an alkyl radical having a number of carbon atoms ranging from 1 to 20, and R2 represents a hydrogen atom, an alkyl radical having a number of carbon atoms ranging from 1 to 8, a phenyl radical, an alkali metal, such as Li, Na or K, H4N+, Bu4N+ or Bu3HN+, exhibiting a kinetic dissociation constant kd, measured at 120° C. by EPR, of greater than 0.05 s?1. These compounds can be used as initiators for the (co)polymerizations of at least one monomer which can be polymerized by the radical route.

Abstract: An alkali-soluble resin is provided. The alkali-soluble resin is prepared using a polyfunctional thiol compound as a chain transfer agent. The alkali-soluble resin has a lower viscosity than a resin having the same molecular weight. Further provided is a negative-type photosensitive resin composition comprising the alkali-soluble resin as a binder resin. The use of the alkali-soluble resin lowers the overall viscosity of the photosensitive resin composition to effectively reduce the height of a stepped portion of a photoresist pattern using a small amount of the photosensitive resin composition.

Abstract: Disclosed is an adhesive composition which is mainly composed of a polymer obtained by copolymerizing a monomer composition containing styrene, (meth)acrylic acid ester having a cyclic structure and alkyl (meth)acrylate having a chain structure. The monomer composition may additionally contain a bifunctional monomer, thereby improving heat resistance, adhesive strength under high temperature conditions, and alkali resistance, and easiness in stripping of an adhesive composition that has been processed at a high temperature. Consequently, there can be obtained an adhesive composition which has high heat resistance, adhesion strength under high temperature conditions, and alkali resistance, and which can be easily stripped off after the adhesive composition is processed at a high temperature.

Abstract: A door operator is provided for operating a door leaf of a door, in particular of a swing leaf door or of a sliding door, having at least one structural member made from a plastic material. The at least one of the structural member is made from at least one of a flame-resistant material and self-extinguishing plastic material.

Abstract: A polymer composition suitable as a binder resin for fibrous substrates such as woven or nonwoven products including textiles, apparel in general, papers, scrim, engineered fabrics, glass or other mineral fibers, roofing or flooring materials is disclosed. The binder resin comprises a copolymer obtainable by reacting: (i) 5-95 pphwm of vinyl acetate; (ii) 95-5 pphwm of at least one vinyl ester of ?-monosubstituted fatty acids; and (iii) 10-0.1 pphwm of at least one functional monomer, such as self-crosslinking monomer, and optionally other comonomers.

Abstract: The present invention provides methods for purifying polymers. In each embodiment of the invention disclosed herein, a supercritical fluid is contacted with an organic solution that includes a polymer to be purified dissolved in an organic solvent. The supercritical fluid extracts the organic solvent from the organic solution. Impurities such as residual monomers and process solvents are removed with the organic solvent and supercritical fluid, thereby purifying the polymer. The methods of the invention are particularly suitable for use in the purification of biodegradable polymers for use in pharmaceutical applications.

Abstract: A copolymer which can be used in power transmission fluids to provide improved viscometric properties is disclosed. The copolymer includes a mixture of alcohols having side chains with an average number of carbons ranging from greater than 8 to less than 12 defined by the following formula: C n = ? i = j i = z ? X i ? Cn i ? i = j i = z ? X i where Xi is the mole fraction of alcohol (i); Cni represents the number of carbon atoms in alcohol (i); j is the lowest number of carbons in an alcohol in the copolymer and must be at least 6; and z is the highest number of carbons in an alcohol.

Abstract: A first electrophoretic medium comprises an electrically charged particle suspended in a suspending fluid, the particle having a polymeric shell having repeating units derived from at least one monomer the homopolymer of which is incompatible with the suspending fluid. A second, similar electrophoretic medium comprises a suspending fluid, and first and second types of electrically charged particle suspended in the suspending fluid, the two types of particle having differing optical characteristics but both having polymeric shells. The polymeric shells are arranged such that homoaggregation of the two types of particles is thermodynamically favored over heteroaggregation.

Abstract: The invention is a system for initiating free radical polymerization comprising: a) in one part, one or more amido-borate compounds containing one or more anionic amido-borate moieties comprising an organoborate wherein the boron atom is bonded to a nitrogen atom of ammonia or an organic compound containing one or more nitrogen atoms, such as a hydrocarbyl amine, a hydrocarbyl polyamine, or an aromatic heterocycle containing one or more nitrogen atoms and optionally containing one or more heteroatoms or heteroatom containing functional moieties, and one or more cationic counter ions and b) in a second part, a liberating compound which reacts with the nitrogen atom(s) bound to the boron atom(s) upon contact with the amido-borate to form an organoborane radical.

Abstract: The invention relates to a process for production of methacrylic acid, to a process for production of methyl methacrylate comprising the process steps a) providing a feed composition comprising at least one C4 feed compound selected from isobutylene and tertiary butanol; b) providing methanol; c) subjecting the at least one C4 feed compound and the methanol to a first catalytic reaction zone to obtain a reaction phase comprising methyl tertiary butyl ether; d) separating at least a first part of methanol from the reaction phase to obtain a first methanol phase and a reaction phase depleted in methanol; e) subjecting at least one of the reaction phase and the reaction phase depleted in methanol to a second catalytic reaction zone to obtain a splitting phase comprising isobutylene and methanol; f) optionally separating at least a first part of isobutylene from the second reaction phase to obtain a first isobutylene phase and a splitting phase depleted in isobutylene; g) optionally subjecting the first isobutyle

Abstract: A method for carrying out a mass polymerization of monomers and/or pre-polymers, which are at least partially soluble in their polymers, in particular methyl methacrylate (MMA) is provided. The method involves the addition of at least one monomer or pre-polymer in a reactor. Mass polymerization for amorphous polymers is carried out without solvents below the glass transition temperature and for crystalline polymers below the melting point, achieving a high degree of conversion of the monomers.

Abstract: Provided herein are methods, devices, and compositions for dermal filling. Also described herein are dermal filler cross-linked compositions and methods for making such compositions. Such compositions comprise, for example, a cross-linked composition of hyaluronic acid, derivatives of hyaluronic acid or mixtures thereof, alginic acid, derivatives of hyaluronic acid or mixtures thereof and calcium ions.

Abstract: An apparatus for continuous polymerization with a simple constitution to produce a polymer having a high quality, as well as a method for producing the polymer using the apparatus, are provided. The apparatus comprises a vessel; a means for supplying a monomer to the vessel; a means for supplying a polymerization initiator to the vessel; a means for detecting a temperature in the vessel; a means for regulating a temperature of an outer wall surface of the vessel so as to have a preset temperature; and a means for controlling a supply flow rate of the monomer and/or the polymerization initiator to the vessel by the monomer supply means and/or the initiator supply means so that the temperature in the vessel becomes substantially the same temperature as the preset temperature.

Abstract: A lubricating oil additive containing at least one acrylic block copolymer having a weight-average molecular weight of 10,000 to 1,000,000 and a molecular weight distribution [ratio of weight-average molecular weight (Mw) to number-average molecular weight (Mn), i.e., Mw/Mn ratio] of 1.5 or below; and lubricating oil compositions containing the additive. The lubricating oil additive exhibits a thickening effect higher than those of conventional acrylic lubricating oil additives and can improve the viscosity index of lubricating oil even when added in a small amount. Further, the additive can also improve the low-temperature characteristics, flow characteristics, and shear stability. The lubricating oil compositions enable energy saving and can lengthen the lifetime of lubricating oil and reduce the load on the global environment.

Abstract: Alkyldiketene-containing aqueous polymer dispersions which are obtainable by miniemulsion polymerization of hydrophobic monoethylenically unsaturated monomers in the presence of alkyldiketenes, processes for the preparation of such polymer dispersions and the use of the thus obtainable dispersions as sizes for paper or as water repellents for leather, natural and/or manmade fibers and textiles.

Abstract: A polymerizable composition comprising a bifunctional (meth)acrylate compound represented by general formula (1) and a monofunctional (meth)acrylate compound having a nitrile group at the terminal thereof represented by general formula (2). The mass ratio of them (the former/the latter) is from 90/10 to 40/60.

Abstract: Compounds are attached to carbon nanotubes (CNT) by a process which comprises: subjecting surface treated CNTs which have been treated to induce negatively charged surface groups thereon, to nucleophilic substitution reaction with a compound carrying a functional group capable of reacting with the negatively charged groups on the CNT surface, whereby the compound chemically bonds to the CNT. The surface CNT treatment may be reduction. The compounds which are bonded to the CNT may be epoxy resins, bonded directly or through a spacer group. Bi-functional CNTs, grafted to both epoxy resins and other polymers such as polystyrene, are also made by this process.

Abstract: A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source with a catalyst comprising synthetic cryptomelane or octahedral molecular sieve. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate.

Abstract: The invention is a two part polymerizable composition comprising in one part an organoboron compound capable of forming free radical generating species and in the second part one or more compounds capable of free radical polymerization and from about 20 to about 30 parts by weight based on the weight of the second part of i) a halogenated polyolefin having halosulfonyl groups or ii) a mixture of a halogenated polyolefin and an organic sulfonyl halide. The second part may further contain a compound capable of causing the organoboron compound to form free radical generating species upon contacting the two parts. The first part may further comprise one or more compounds capable of free radical polymerization.

Abstract: The present invention is based on the discovery that certain electron poor olefins combined with nucleophiles and a base catalyst are useful as adhesive compositions for the electronic packaging industry. In particular, the adhesive formulations set forth herein are useful as low temperature curing formulations with high adhesion to a variety of substrates. Invention formulations typically cure at about 80° C. and have a potlife of about 24 hours. The formulations cure by the well-known Michael addition reaction.

Abstract: A myo-inositol derivative: R1, R2, R3 and R4 are identical, being selected from PO3H2, PO3Na2, PO3K2, PO3Li2, PO3Ca, PO3Mg, PO3(NH4), PO3(RNH3)2, PO3(R2NH2)2, PO3(R4N)2, PO(OR)2, H, COZ and BHPP, where R is benzyl or alkyl of 1 to 6 carbon atoms and Z is an alkyl or arylalky group providing a cleavable protecting group; R5 of H, benzyl, 4-methoxybenzyl, COZ, PO3H2, PO3Na2, PO3K2, PO3Li2, PO3Ca, PO3Mg, PO3(NH4)2, PO3(RNH3)2, PO3(R2NH2)2, PO3(R4N)2, PO(OR)2, and BHPP, where R is benzyl or alkyl of 1 to 6 carbon atoms and Z is an alkyl or arylalky group providing a cleavable protecting group; X is one of CH2, CH2CH2O, and CH2CH2CH2O; n is an integer from 1 to 8; L1 is a single bond or CH2; L2 is one of a single bond, CONH, CH2CONH, CH2CH2CONH, CH2CH2NHCO, CH2CH2NHCONH, CH2CH2NHCSNH, CH2CH2NHSO2, CH2CH2CH2NHCO, CH2CH2CH2NHCONH, CH2CH2CH2NHCSNH, CH2CH2CH2NHSO2, NHCO, NHCONH, NHCSNH, OCONH, CH2, CH2CH2, CH2CH2O, CH2CH2S, CH2CH2NH, CH2CH2CH2, CH2CH2CH2O, CH2CH2CH2S, CH2CH2CH2NH, and NH—SO2; and R6 is a UV-visible ch

Abstract: A lubricant composition, additive concentrate, and method for lubricating an engine. The crankcase lubricant has less than 30 weight percent of a relatively low Noack volatility base oil and a viscosity additive. The viscosity additive has a minor effective amount of sacrificial polymeric viscosity index improver having a shear stability index (SSI) of greater than about 45 and a major amount of a viscosity index improver having an SSI of less than about 26. The minor amount of sacrificial viscosity index improver additive is effective to provide a lubricant composition having a ratio of absolute viscosity increase at 40° C. to an absolute viscosity increase at 40° C. of an RL 216 reference oil of less than about 0.8.

Abstract: Devices comprising functionalized materials, and embodiments of a method for making and using such devices, are disclosed. Exemplary devices include ophthalmic devices, nanoparticles, quartz crystal microbalances, microarrays, and nanocomposites. In particular embodiments, device surfaces are modified with monomers and/or polymers, typically carbohydrate monomers and/or polymers. Embodiments of a method for making and using such devices are disclosed. Monomers and/or polymers are covalently bonded to surfaces using functionalized perhalophenylazides. In some embodiments, device surfaces are functionalized with a perhalophenylazide. One or more monomers and/or polymers subsequently are covalently bonded to the device surface using the perhalophenylazide. In other embodiments, monomers and/or polymers are derivatized with a functionalized perhalophenylazide. The derivatized monomers and/or polymers then are covalently bonded to the device surface using the perhalophenylazide.

Abstract: The present invention describes linear or star block copolymers, their process of preparation and their use in adhesive compositions, in particular as pressure-sensitive adhesive. The copolymers of the invention are prepared by controlled radical polymerization by nitroxides; they exhibit at least one soft block with a Tg of less than 0° C. and at least one hard block with a Tg of greater than ambient temperature.

Abstract: An adhesive composition is disclosed which includes a polymer prepared by copolymerizing a monomer containing a polymerizable group, the polymer including a low-molecular-weight component having a molecular weight equivalent to 1% or less of the weight-average molecular weight of the polymer, the low-molecular-weight component is contained in a range of not less than 0 weight % to less than 0.3 weight % of the total weight of the polymer. This allows provision of an adhesive composition having great adhesive strength in a high-temperature environment, especially at temperatures from 140° C. to 200° C., as well as high heat resistance and favorable crack resistance.

Abstract: The invention relates to a method for radical polymerization of one or several ethylenically unsaturated compounds, characterized in that it consists in providing at least 80.8 percent by weight ethylenically unsaturated compounds in relation to the total weight of the ethylenically unsaturated compounds, adding at least one polymerization initiator for radical polymerization in at least two steps, wherein more polymerization initiator is added in the second step than in the first.

Abstract: The invention relates in general terms to a process for preparing to a process for purifying an alkyl methacrylate, comprising the steps of: A. providing an alkyl methacrylate with an impurity: B. adsorbing at least some of the impurity onto a purifying solid to obtain an ultrapure alkyl methacrylate, to a process for preparing an ultrapure alkyl methacrylate, to an apparatus for preparing alkyl methacrylates, to a process for preparing a polymer based at least partly on alkyl methacrylates, to the use of an alkyl methacrylate obtained according to the invention in chemical products, and to chemical products comprising an alkyl methacrylate obtained according to the invention.

Abstract: The present invention provides micro- and nanofibers made from polymers that comprise nanoparticles, such as carbon nanoparticles and inorganic nanoparticles, and methods of making such fibers.

Abstract: In a method of forming a pattern and a method of manufacturing a capacitor using the same, a conductive layer is formed on a mold layer having an opening. A first buffer layer pattern including a polymer having a repeating unit of anthracene-methyl methacrylate and a repeating unit of alkoxyl-vinyl benzene is formed on the conductive layer in the opening. The first buffer layer pattern is baked to cross-link the polymers and form a second buffer layer pattern that is insoluble in a developing solution. The conductive layer on a top portion of the mold layer is selectively removed by using the second buffer layer pattern as an etching mask. Accordingly, a conductive pattern for a semiconductor device is formed. The method of forming a pattern may simplify manufacturing processes for a capacitor and a semiconductor device, and may improve their efficiencies.

Abstract: The invention relates to a process for preparing oxetane-containing (meth)acrylates.

Abstract: Provided are an optical resin and an optical member using the same, both orientation birefringence and photoelasticity birefringence of the optical material being deadened and generally eliminated. The optical material consists of a composite constituent system of three or more constituents including a copolymerization system of monomer-element number not smaller than two, combination and constituent ratio of the composite constituent system being set so that both orientation birefringence and photoelasticity birefringence of the optical material are deadened at the same time and 5.0×10?5 or less is given under a condition that principal chains of the copolymerization system have degree of orientation equal to 0.03, and further a photoelasticity constant not greater than 1.0×10?12 (Pa?1) is obtained. The composite constituent system may contain an additive containing a low molecular weight compound which has an anisotropic polarizability and can be orientated in a polymer.

Abstract: The invention provides a block polymer compound enabling satisfactory dispersion of a colorant in a solvent, and an ink composition containing such block polymer compound. The block polymer compound of the invention is a block polymer compound having at least three block segments, comprising block segments A, B and C arranged in succession, wherein the block segment C is most solvent attractive while the block segment A is most solvent repulsive, and at least either one of the block segments includes an ionic group or an acidic group.

Abstract: The present invention provides a process for stopping continuous polymerization in which a raw material monomer is polymerized in a reaction vessel by continuously feeding the raw material monomer and a polymerization initiator in the reaction vessel, which process comprises the steps of, in the midst of the polymerization reaction, stopping feeding of the polymerization initiator to the reaction vessel with keeping stirring in the reaction vessel; and adjusting a feed flow rate of the raw material monomer to the reaction vessel so that a temperature T1 (° C.) in the reaction vessel and a temperature T2 (° C.) of an external wall thereof satisfy a relation represented by the formula: T2?20?T1?T2+20.

Abstract: The present invention relates to processes for preparing actinic-radiation-curable and/or dual-cure poly(meth)acrylates by preparing a poly(meth)acrylate containing hydroxy-functional side chains and transesterifying or esterifying the poly(meth)acrylate containing hydroxy-functional side chains with a (meth)acrylate or (meth)acrylic acid. The present invention further relates to the actinic-radiation-curable and/or dual-cure poly(meth)acrylates themselves and to the use of the actinic-radiation-curable and/or dual-cure poly(meth)acrylates in the preparation of dispersions or as a component in coating formulations and topcoats comprising at least one actinic-radiation-curable and/or dual-cure poly(meth)acrylate.

Abstract: Photopolymer resins ate disclosed which includes metal and/or ceramic surface chelating agents to provide strong bonding of the photopolymer resin to the inorganic surface of the first information layer of an optical disc. The resins also include a fast surface cure and glass transition temperature controlling monomers that provides easy stamper separation The disclosed photopolymer resins also include short wavelength (<405 nm) surface cure initiators. The resins may also optionally include shrinkage control oligomers and/or polymer fillers or a combination of both Use of the disclosed resins eliminates two steps from the manufacture of a multiple information layer optical disc as the formation of spacer layers and the curing of spacer layers is no longer necessary.

Abstract: Disclosed are gel-coated beads (including Hydrogel™-coated beads), which are capable of adsorbing, or absorbing, proteins and other biomolecules onto or into the gel coating. The gel-coated beads with absorbed or adsorbed biomolecules are suitable for use in an assays, purification or other purposes. The beads have a core made from any of a number of materials, including latex, coated with the gel shell. The biomolecules can be retained within the gel, following adsorption, by covalent attachment, or, by selection of conditions of ambient pH and/or ionic strength such that they are retained without further reaction. Therefore, adsorbed proteins would retain the ability to bind to their respective ligands.

Abstract: Process for preparing a seed latex of a methyl methacrylate polymer (PMMA) by radical polymerization in aqueous emulsion of methyl methacrylate and optionally at least one comonomer. Process for preparing a chlorinated vinyl polymer latex by radical polymerization in aqueous emulsion of at least one chlorinated vinyl monomer, according to which the polymerization takes place in the presence of at most 3% by weight, expressed relative to the total weight of the monomers, of the PMMA seed latex.

Abstract: Improved processes for atom (or group) transfer radical polymerization (ATRP) and novel polymers have been developed and are described. In certain embodiments, novel copolymers comprising a least one polymeric branch or polymeric block with a predominantly alternating monomer sequence are described. Novel copolymers comprising a least one polymeric branch or polymeric block with a gradient monomer structure are described. Additionally, novel copolymers comprising a least one polymeric branch or polymeric block with a predominantly periodic monomer sequence are also described. Novel copolymers having a water soluble backbone and at least two hydrophobic polymeric branches grafted to the water soluble backbone are also described.

Abstract: A curable composition and a process for using the curable composition within a grating-coupled waveguide (GCW) sensor are disclosed. The composition can be used for facile replication of optical components, specifically those used in a label-independent detection system where operation of the waveguide is dependent on the detailed formation of micro and nano size patterns. The photo or electron beam curable composition has low viscosity (?500 cPs) and cures to an optically clear material with high glass transition temperature (?70° C.), low shrinkage on cure, low outgassing, and low extractables.

Abstract: Problems: To easily and efficiently obtain a high quality (meth)acrylate-based polymer containing small residual amount of metal components (an aluminum component, an alkali metal component and other metal components) and having high purity and excellent properties such as heat resistance, transparency and others. Means for Solving the Problems: The present invention provides a method of obtaining a (meth)acrylate-based polymer by adding an acid to a reaction solution containing the (meth)acrylate-based polymer obtained by polymerizing a (meth)acrylate-based monomer in a water-insoluble organic solvent in the presence of a metal compound such as a metal-containing polymerization initiator, an organoaluminum compound and the like, washing the reaction solution to which the acid has been added by admixing water at 90° C.

Abstract: The invention is a two part polymerizable composition comprising in one part an organoboron compound capable of forming free radical generating species and in the second part one or more compounds capable of free radical polymerization and from about 20 to about 30 parts by weight based on the weight of the second part of i) a halogenated polyolefin having halosulfonyl groups or ii) a mixture of a halogenated polyolefin and an organic sulfonyl halide. The second part may further contain a compound capable of causing the organoboron compound to form free radical generating species upon contacting the two parts. The first part may further comprise one or more compounds capable of free radical polymerization.

Abstract: The present invention is directed generally to track segments for track vehicles and, more specifically, to a track segment having an ethylene propylene diene monomer (EP(D)M) rubber based backer, and a method of making. In one embodiment, the track segment includes an EP(D)M rubber based backer including a rubber compound having 100 phr EP(D)M rubber wherein the diene component is optionally present, a peroxide curing agent, and one or more acrylic and/or methacrylic coagents. The track segment further includes a track pad and a track body. The track pad and backer cooperate with the track body to define the track segment for use in a track for a track vehicle. The EP(D)M rubber based compound provides a desirable balance of low heat build-up under heavy dynamic cyclic compression conditions, and also has a desirable load carrying capability, high heat resistance, and good cut/tear strength in hot climates.

Abstract: The present invention relates to various end use applications prepared from certain block copolymers. The block copolymers include one or more A or A? blocks or B blocks plus one or more terminal M blocks. Each A and A? is a block or segment comprising predominantly a polymerized alkenyl aromatic compound, each B is a block or segment comprising predominantly a polymerized conjugated alkadiene, and each M is a six membered anhydride ring and/or acid group. The anhydride rings are prepared by thermally decomposing adjacent units of (1-methyl-1-alkyl)alkyl acrylic esters such as t-butylmethylacrylate. A wide variety of polymers are disclosed having the stable anhydride rings in the polymer backbone. The invention relates specifically to various end uses prepared from the reaction product of such block copolymers with various reactive resins, reactive monomers and metal derivatives.

Abstract: To provide a pressure-sensitive adhesive optical film that can satisfy durability even when a thin pressure-sensitive adhesive layer is formed. A pressure-sensitive adhesive optical film comprising an optical film and a pressure-sensitive adhesive layer on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is formed by a pressure-sensitive adhesive, comprising: a (meth)acrylic polymer having a weight average molecular weight of 1,500,000 to 2,800,000; containing, as a monomer component, 3 to 10% by weight of a heterocyclic ring-containing acrylic monomer; 0.5 to 5% by weight of a carboxyl group-containing monomer; 0.05 to 2% by weight of a hydroxyl group-containing monomer; and 83 to 96.45% by weight of an alkyl(meth)acrylate monomer, and a crosslinking agent.

Abstract: An optical pressure-sensitive adhesive of the invention comprises a base polymer having a functional group (F); and a coupling agent that has a benzyl ester group and is represented by Formula (1): wherein A1 and A2 are different functional groups, one of A1 and A2 shows reactivity or interaction with the functional group (F) of the base polymer, R1 is an optionally substituted alkylene group of 1 to 12 carbon atoms and/or an optionally substituted phenylene group, and R2 and R3 are each a hydrogen atom or an alkyl group of 1 to 12 carbon atoms and may be the same or different. The pressure-sensitive adhesive is use in pressure-sensitive adhesive optical films and so on that is excellent in terms of both durability and release property.

Abstract: The present invention has its object to provide an acrylic curable composition which is improved in tackiness, retention and other adhesive properties without reducing the thermal stability and weather resistance. The above-mentioned object can be solved by a curable composition which comprises, as an essential component, polymer (I), which is a (meth)acrylic acid ester copolymer having, in each molecule, at least one group represented by the general formula 1: —OC(O)C(Ra)?CH2??(1) ?(wherein Ra represents a hydrogen atom or a hydrocarbon group containing 1 to 20 carbon atoms) at a terminus of the molecular chain and is obtained by (co)polymerizing an (meth)acrylic acid alkyl ester the alkyl moiety of which contains 7 to 20 carbon atoms.

Abstract: A process for preparing crosslinked polymer particles at high solids levels (i.e., >40 wt %). Also provided is a method for predicting whether a selection of reaction conditions for preparing crosslinked polymer particles will exhibit a potential for forming a gel and a method for predicting whether a selection of reaction conditions will or will not result in the formation of a gel.