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Dispersions comprising polythiophenes with a defined content of thiophene monomer

Tue, 09 Jun 2015 08:00:00 EDT

The present invention relates to a method for producing a composition comprising polythiophene, comprising the method steps: I) provision of a composition Z1 comprising thiophene monomers and an oxidising agent; II) oxidative polymerisation of the thiophene monomers by reducing the oxidising agent to a reduction product and oxidation of the thiophene monomer, to form a polythiophene and a composition Z2 comprising the reduction product; III) at least partial removal of the reduction product from the composition Z2 obtained in method step II), to obtain a composition Z3; wherein it is ensured that, following completion of method step III), the content of non-polymerised thiophene monomer in the composition Z3 is in the range from 1 ppm to 100 ppm, based on the total weight of the composition Z3. The present invention also relates to a composition obtainable as the composition Z3 produced with this method, a composition comprising a polythiophene, a layer construction, an electronic component and the use of a composition.



High efficiency wet strength resins from new cross-linkers

Tue, 02 Jun 2015 08:00:00 EDT

Compositions and methods related to new wet strength resins are provided. By using functionally-symmetrical cross-linkers and mono-functional modifiers, and separating the steps of reacting a prepolymer with the cross-linkers from the reaction of intermediate cross-linked prepolymer with epichlorohydrin, new wet strength resin products are provided having improved properties.



Hybrid host materials for electrophosphorescent devices

Tue, 26 May 2015 08:00:00 EDT

Compounds (including polymers) for use in hybrid host materials which can be used in electroluminescent devices. The compounds comprise at least one electron-transporting moiety and at least one hole-transporting moiety which are joined by a flexible linker. Hybrid host materials comprising the compounds exhibit stability against phase separation, elevated glass transition temperature, morphological stability against crystallization, and isolation of the electron transporting moiety and hole transporting moiety π-systems.



Methods and materials for removing metals in block copolymers

Tue, 26 May 2015 08:00:00 EDT

The present invention relates to a method for treating a block copolymer solution, wherein the method comprises: providing a solution comprising a block copolymer in a non aqueous solvent; and, treating the solution to remove metals using an ion exchange resin. The invention also relates to a method of forming patterns using the treated block copolymer.



Thiol-selective water-soluble polymer derivatives

Tue, 26 May 2015 08:00:00 EDT

The present invention provides water-soluble, polymer derivatives having a thiol-selective terminus suitable for selective coupling to thiol groups, such as those contained in the cysteine residues of proteins, as well as methods for preparing the water-soluble, polymer derivatives having a thiol-selective terminus.



Alkylene oxide polymerization using a double metal cyanide catalyst complex and a magnesium, Group 3-Group 15 metal or lanthanide series metal compound

Tue, 26 May 2015 08:00:00 EDT

Alkylene oxide polymerizations are performed in the presence of a double metal cyanide polymerization catalyst and certain magnesium, Group 3-Group 15 metal or lanthanide series metal compounds. The presence of the magnesium, Group 3-Group 15 metal or lanthanide series metal compound provides several benefits including more rapid catalyst activation, faster polymerization rates and the reduction in the amount of ultra high molecular weight polymers that are formed. The catalyst mixture is unexpectedly useful in making polyethers having low equivalent weights.



Process for producing spherical particles of furfuryl alcohol resin, spherical particles of furfuryl alcohol resin produced by the process, spherical carbon particles and spherical activated carbon particles

Tue, 26 May 2015 08:00:00 EDT

Providing a process for advantageously producing spherical particles of furfuryl alcohol resin using only furfuryl alcohol without using a harmful aldehyde as a starting material. In the process, furfuryl alcohol is subjected to a self-condensation reaction in the presence of an acid catalyst, whereby a fluidic condensation resin of furfuryl alcohol is obtained. The condensation resin of furfuryl alcohol is granulated and cured using water as a reaction medium in the presence of a dispersion stabilizer and an acid catalyst having a pKa of not more than 1.5, whereby spherical cured resin particles are formed.



Direct CH arylation method using palladium-based catalyst

Tue, 26 May 2015 08:00:00 EDT

A method for producing a copolymer includes reacting a first monomer with a second monomer using a Pd-based catalyst, wherein the first monomer is a first hetero cyclic compound which includes a first hetero atom selected from S, N, and O, the first hetero cyclic compound in which a carbon atom adjacent to the first hetero atom is coupled with at least one hydrogen atom, and the second monomer is a second hetero cyclic compound which includes a second hetero atom selected from S, N, and O, the second hetero cyclic compound in which the second hetero atom is coupled with a carbon atom in which a halogen group selected from Br, Cl, and I is substituted.



Process for manufacturing polycarbonate from dianhydrohexitol Dialkylcarbonate

Tue, 26 May 2015 08:00:00 EDT

A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); a step (4) of recovering the polycarbonate formed during step (3).



Ring-opening polymerization of cyclic compounds catalyzed by carbene derivatives

Tue, 26 May 2015 08:00:00 EDT

This disclosure provides methods of controlled polymerization of cyclic compounds catalyzed by carbene derivatives having a general formula as shown below, and to obtain a biodegradable polymeric material having a large molecular weight, a narrow dispersity, and no metallic impurity.



Binders and materials made therewith

Tue, 26 May 2015 08:00:00 EDT

A curable aqueous composition is disclosed comprising a carbohydrate, a crosslinking agent, and an amine base, wherein the curable aqueous composition has a pH adjusted by the amine base. Further disclosed is a method of forming a curable aqueous solution.



Poly(aryl ether sulfone) composition, and method of making

Tue, 26 May 2015 08:00:00 EDT

A poly(aryl ether sulfone) comprises units of formula (I): wherein Ar1 is a divalent C6-C15 aromatic group, Ar2 is a divalent C6-C15 aromatic group, Ar3 is a divalent C6-C15 aromatic group, and n is greater than 1; and a terminal group of formula (II) derived from a monofunctional phenoxide wherein is X is a hydrogen atom or an organic substituent having from 1 to 20 carbon atoms; wherein the poly(aryl ether sulfone) has a hydroxyl group content greater than 0 and less than 50 parts per million (ppm), based on the poly(aryl ether sulfone) weight, a glass transition temperature of 180 to 290° C., a weight average molecular weight of 20,000 to 100,000, a halogen content of greater than 0 and less than 3000 ppm based on the poly(aryl ether sulfone) weight. The poly(aryl ether sulfone) is free of methoxy groups.



Resins of the phenoplast type obtained from phenolic compounds and from macromolecular hardeners bearing aldehyde functions

Tue, 26 May 2015 08:00:00 EDT

A method for preparing a formaldehyde-free phenolic plastic resin, includes a step of preparing a hardener via careful oxidation of a polyol and a step of reacting the hardener with phenolic compounds.



Coatings repairable by introduction of energy

Tue, 26 May 2015 08:00:00 EDT

The present invention relates to coating compositions repairable by introduction of energy and comprising defined fatty acid esters, to coatings obtained therewith and repairable by introduction of energy, to methods of producing them, and to their use.



Graft copolymers of polyfarnesenes with condensation polymers

Tue, 26 May 2015 08:00:00 EDT

Provided herein are graft copolymers of polyfarnesenes with condensation polymers; and methods of making and using the graft copolymers disclosed herein. In certain embodiments, the condensation polymers include polyesters, polycarbonates, polyamides, polyethers, phenol-formaldehyde resins, urea-formaldehyde resins, melamine-formaldehyde resins and combinations thereof. In some embodiments, the polyfarnesenes include farnesene homopolymers derived from a farnesene, and farnesene interpolymers derived from a farnesene and at least a vinyl monomer. In certain embodiments, the farnesene is prepared from a sugar by using a microorganism.



Multifunctional hyperbranched organic intercalating agent, method for its manufacture and its use

Tue, 26 May 2015 08:00:00 EDT

A facile synthesis of amphiphilic hyperbranched polymers consisting of poly(amic acid) and polyimide was developed via “A2+B3” approach from difunctional anhydride and trifunctional hydrophilic poly(oxyalkylene)triamine. Various amphiphilic hyperbranched poly(amic acid)s (HBPAAs) with terminal amine functionalities and amic acid structures were prepared through ring-opening polyaddition at room temperature, followed by thermal imidization process for the formation of hyperbranched polyimides (HBPIs), accordingly. The resulting HBPIs were analyzed by GPC, indicating the molecule weights of 5000˜7000 g/mol with a distribution of polydispersity between 2.0 and 3.8. The amine titration for HBPIs indicated the peripheral total-amine contents to be 8.32˜18.32 mequiv/g dependent on compositions.



Organic light-emitting device

Tue, 26 May 2015 08:00:00 EDT

An organic light-emitting device including: a substrate; a display unit on the substrate; and an encapsulation layer covering the display unit, the encapsulation layer having an alternating stack structure of an organic layer and an inorganic layer, and the organic layer including a polymer polymerized from monomers of Formula 1 and Formula 2:



Retardation compensators of negative C-type for liquid crystal display

Tue, 26 May 2015 08:00:00 EDT

Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarlate having a thio group or a sulfur oxide group in a polymer main chain thereof. Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction that a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.



Method for producing cleaning blade

Tue, 19 May 2015 08:00:00 EDT

In a method for producing a cleaning blade, a first composition obtained by causing a reaction of diphenylmethane diisocyanate and a first aliphatic polyester polyol which has a number-average molecular weight of 2000 to 3500 and is used in an amount of 20 to 40 mol % relative to the diphenylmethane diisocyanate and a second composition containing a urethane rubber-synthesizing catalyst and a second aliphatic polyester polyol which has a number-average molecular weight of 2000 to 3500 and is the same as or different from the first aliphatic polyester polyol are mixed so that a relationship between a number of moles (MNCO [mol]) of an NCO group in the first composition and a number of moles (MOH [mol]) of an OH group in the second composition satisfies 0.05≦MOH/MNCO≦0.20.



Synthesis of high molecular weight PEO using non-metal initiators

Tue, 19 May 2015 08:00:00 EDT

A new synthetic method to prepare high molecular weight poly(ethylene oxide) with a very narrow molecular weight distribution (PDI



Furan-based curable compound derived from biomass, solvent-free curable composition, and method for preparing same

Tue, 19 May 2015 08:00:00 EDT

The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.



Method for making poly(hydridocarbyne)

Tue, 19 May 2015 08:00:00 EDT

Poly(hydridocarbyne) (PHC) is synthesized by a hybrid, active-metal/electrochemical method by applying a voltage to the electrodes at least one of which is an active-metal, the electrodes being immersed in a trisubstituted halomethane solution. The active-metal electrode and halomethane solution both partake in the electrochemical reaction.



Conjugated polymer composition for solar cell and flexible electronics applications

Tue, 19 May 2015 08:00:00 EDT

A polymer composition for solar cell and flexible electronics devices, where the polymer is a p-type conducting polymer. The p-type polymer comprises a benzothiadiazole acceptor and indeno-fluorene donor. Further, a solar cell and flexible electronic device article may be made from the polymer.



Photovoltaic cell containing novel photoactive polymer

Tue, 19 May 2015 08:00:00 EDT

Novel photoactive polymers, as well as related photovoltaic cells, articles, systems, and methods, are disclosed.



Process for preparing condensation resins

Tue, 19 May 2015 08:00:00 EDT

The present invention relates to a new process for preparing condensation resins, constructed formally from urea, formaldehyde, and CH-acidic aldehydes.



Sulphur-containing triazine monomer that can be used for the synthesis of a polymer membrane for a fuel cell

Tue, 19 May 2015 08:00:00 EDT

A sulphur-containing triazine monomer is provided that can be used in the synthesis of a polymer membrane for a PEM-type fuel cell. The sulphur-containing triazine monomer has a structure corresponding to a formula (I): in which: Tz represents a 1,3,5-triazine nucleus;X1 and X2, which are identical or different, represent S, SO, or SO2;Ar1, Ar2, Ar4 and Ar5, which are identical or different, represent a substituted or unsubstituted phenylene group;Ar3 represents a substituted or unsubstituted phenyl group; andZ1 and Z2, which are identical or different, are selected from a group that includes halogens, hydroxyl, alkoxyl, thiol, carboxyl, carboxylates, amine, sulphonamide, acyl chlorides, sulphonyl chlorides, sulphonyl fluorides, isocyanates, and combinations thereof.



Polyurethanes made with copper catalysts

Tue, 19 May 2015 08:00:00 EDT

Polyisocyanate-based polymers are formed by curing a reaction mixture containing at least one polyisocyanate and at least one isocyanate-reactive compound having at least two isocyanate-reactive groups in the presence of a copper catalyst that contains at least one copper atom associated with a polydentate ligand that contains at least one nitrogen-containing complexing site.



Modified alkoxylation products having at least one non-terminal alkoxysilyl group and a plurality of urethane groups, and their use

Tue, 19 May 2015 08:00:00 EDT

Alkoxylation products, their preparation, compositions comprising these alkoxylation products, and the use thereof as or for producing adhesives and sealants.



Organosilicon compounds and their use for producing hydrophilic surfaces

Tue, 19 May 2015 08:00:00 EDT

Compounds of the formula where R1 each individually is identical or different and is a hydrocarbon radical, R2 each individually is hydrogen or a methyl radical, n is an integer from 6 to 11, and m is 0 or 1, with the proviso that the sum of the number of carbon atoms in the three radicals R1 in the compound of the formula (I) is 6 to 24, can be admixed with curable polymer compositions to form products with hydrophilic surfaces, or can be applied to surfaces to render them hydrophilic.



Polyhedral polysiloxane modified product and composition using the modified product

Tue, 19 May 2015 08:00:00 EDT

The present invention has its object to provide a liquid-form modified product of polyhedral polysiloxane which is excellent in moldability and transparency, and a composition produced using the modified product. In addition, the present invention can provide an easy-to-handle modified product and composition. The present invention provides a modified product of polyhedral polysiloxane which is obtainable by modifying a polyhedral polysiloxane compound (a) with a compound (b), and a composition containing the modified product. The polyhedral polysiloxane compound (a) has an alkenyl group and/or a hydrosilyl group, and the compound (b) has a hydrosilyl group and/or an alkenyl group each capable of hydrosilylation with the component (a).



Curable-on-demand polysiloxane coating composition

Tue, 19 May 2015 08:00:00 EDT

A curable composition comprises (a) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydroxysilyl moieties; (b) at least one polyorganosiloxane, fluorinated polyorganosiloxane, or combination thereof comprising reactive silane functionality comprising at least two hydrosilyl moieties; and (c) at least one photoactivatable composition comprising at least one organoborate salt selected from tetraarylborate, triarylorganoborate, diaryldiorganoborate, and aryltriorganoborate salts (and combinations thereof) of at least one base selected from amidines, guanidines, phosphazenes, proazaphosphatranes, and combinations thereof; wherein at least one of the components (a) and (b) has an average reactive silane functionality of at least three.



Semiconducting compounds and devices incorporating same

Tue, 19 May 2015 08:00:00 EDT

Disclosed are molecular and polymeric compounds having desirable properties as semiconducting materials. Such compounds can exhibit desirable electronic properties and possess processing advantages including solution-processability and/or good stability.



Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated

Tue, 19 May 2015 08:00:00 EDT

An improved polymerization and process method allows the production of special nitrile rubbers which are characterized by a specific anion content and an excellent storage stability and allow a particularly good vulcanization rate and moreover result in vulcanized materials that have advantageous properties, especially with regard to the contact with metal components of molded parts based on said vulcanized materials.



Biodegradable polyurethane and polyurethane ureas

Tue, 19 May 2015 08:00:00 EDT

This invention relates to biocompatible, biodegradable thermoplastic polyurethane or polyurethane/ureas comprising isocyanate, polyol and a conventional chain extender and/or a chain extender having a hydrolysable linking group and their use in tissue engineering and repair applications, particularly as stents and stent coating.



Hydroswellable, segmented, aliphatic polyurethanes and polyurethane ureas

Tue, 19 May 2015 08:00:00 EDT

Hydroswellable, absorbable and non-absorbable, aliphatic, segmented polyurethanes and polyurethane-urea capable of swelling in the biological environment with associated increase in volume of at least 3 percent have more than one type of segments, including those derived from polyethylene glycol and the molecular chains are structurally tailored to allow the use of corresponding formulations and medical devices as carriers for bioactive agents, rheological modifiers of cyanoacrylate-based tissue adhesives, as protective devices for repairing defective or diseased components of articulating joints and their cartilage, and scaffolds for cartilage tissue engineering.



Polyurethane based insulated glass sealant

Tue, 19 May 2015 08:00:00 EDT

Embodiments of the invention include insulated units and methods of producing the insulating units. The insulating units include a first surface, a structural seal disposed on at least portions of the first surface, and a second surface disposed on the structural seal. The structural seal includes the reaction product of at least one first isocyanate, at least one isocyanate reactive side, and at least one adhesion promoter including a reaction product of at least one secondary aminoalkoxy silane and at least one second isocyanate.



Semiconducting polymers

Tue, 12 May 2015 08:00:00 EDT

Novel semiconducting photovoltaic polymers with conjugated units that provide improved solar conversion efficiency that can be used in electro-optical and electric devices. The polymers exhibit increased solar conversion efficiency in solar devices.



Polycarbonate polyol compositions

Tue, 12 May 2015 08:00:00 EDT

The present invention provides polycarbonate polyol compositions with improved characteristics. Such polycarbonate polyol compositions are useful in thermosetting applications for the production of coatings for consumer products.



Method of making polylactic acid using carbene derivatives as the catalyst

Tue, 12 May 2015 08:00:00 EDT

This disclosure provides a method of making polylactic acid using carbon dioxide adducts of carbenes, wherein the adducts of carbenes have a structure represented by formula (I) as follows:



Liquid crystal polyester amide resin

Tue, 12 May 2015 08:00:00 EDT

Provided is a liquid crystal polyester amide resin which has a good hue. Specific monomers are polymerized using a specific catalyst. The specific monomers are composed of: at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines; and at least one kind of a monomer selected from among aromatic hydroxy carboxylic acids, aromatic dicarboxylic acids or aliphatic dicarboxylic acids, and aromatic diols or aliphatic diols. It is preferable that the content of the at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines is from 0.1 mol % to 85 mol % (inclusive).



Process for producing polyether polyols having primary hydroxyl end groups

Tue, 12 May 2015 08:00:00 EDT

The present invention relates to a process for producing polyether polyols having primary hydroxyl end groups, comprising the steps of reacting a starter compound containing active hydrogen atoms with an epoxide under double metal cyanide catalysis, reacting the resulting product with a cyclic carboxylic anhydride and reacting this resulting product with ethylene oxide in the presence of a catalyst containing at least one nitrogen atom per molecule, excluding non-cyclic, identically substituted tertiary amines. The invention further relates to polyether polyols obtainable by this process, compositions containing said polyols and polyurethane polymers based on said polyols.



Castor oil derivatives and method for the production thereof

Tue, 12 May 2015 08:00:00 EDT

Novel compounds of formula (1) wherein: A is especially a linear or branched divalent alkylene radical having between 1 and 10 carbon atoms, and Y is especially a hydrogen atom.



Organopolysiloxane

Tue, 12 May 2015 08:00:00 EDT

Provided is an organopolysiloxane and its use. The organopolysiloxane may exhibit excellent processibility and workability. In addition, when the organopolysiloxane is used as an encapsulant, it exhibits excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property. Moreover, the organopolysiloxane may provide an encapsulant exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.



Superconducting electrolytic hybrid material, and preparation method and uses thereof

Tue, 12 May 2015 08:00:00 EDT

The present invention relates to a novel superconducting hybrid polymer material and to the preparation method and uses thereof, particularly for proton superexchange membranes usable as fuel cell electrolytes.



Repellent coating composition and coating, method for making and uses thereof

Tue, 12 May 2015 08:00:00 EDT

A cross-linkable coating composition comprises (i) one or more silanes having either at least three hydrolysable groups, or at least two hydrolysable groups and at least one organofunctional group capable of forming chemical bonds upon curing, wherein (i.a) the sum of said silanes constitutes at least 20% of the total mass of the coating compositions combined solids and silanes, and (i.b) said silanes are possibly partly or completely hydrolyzed and possibly partly condensed, and (ii) at least one low surface energy additive, wherein (ii.a) said low surface energy additive comprises polydimethylsiloxane chemically bonded to at least one functional group, (ii.b) said functional group is configured for the polydimethylsiloxane moiety to cross-link with said coating composition, (ii.c) said polydimethylsiloxane constitutes 0.01% to 15% of the mass of said cured coating, when said coating composition is cured, and (ii.d) said polydimethylsiloxane moiety has a molecular weight of more than 1600 g/mol.



Polyurethane (meth) acrylates using modified hydroxythiols

Tue, 12 May 2015 08:00:00 EDT

The invention provides intermediates of the formula: as well as a method of their preparation by reacting a thiol having at least two hydroxyl groups with a mono-unsaturated organic compound in the presence of a base catalyst. A polymerizable urethane acrylate oligomer or urethane methacrylate oligomer is formed by reacting a polyisocyanate with the intermediate. The polymerizable urethane acrylate oligomer or urethane methacrylate is blended with a polymerization initiator to form a composition which is useful in such applications as adhesives.



Method for producing polymer, device for producing polymer, device for producing complex, and polymer product

Tue, 12 May 2015 08:00:00 EDT

A method for producing a polymer, by continuously supplying and bringing at least a ring-opening polymerizable monomer and a compressive fluid into contact with each other, to thereby allow the ring-opening polymerizable monomer to carry out ring-opening polymerization to continuously generate a polymer.



Polymeric composition comprising metal alkoxide condensation product, organic silane compound and boron compound

Tue, 12 May 2015 08:00:00 EDT

A polymeric composition comprising: a reaction product (c) produced by reacting an organic silane compound (a) represented by the formula: R4-n—Si—(OR′)n [wherein R represents an organic group containing an amino group; R′ represents a methyl group, an ethyl group or a propyl group; and n represents an integer selected from 1 to 3] with at least one boron compound (b) selected from the group consisting of H3BO3 and B2O3; and a condensation product (d) of a metal alkoxide.



Multilayered weatherable film for solar cell

Tue, 12 May 2015 08:00:00 EDT

Disclosed is a multilayered weatherable film for a solar cell, which has superior elongation change rate, strength change rate and haze and thus is suitable for use in a solar cell, and includes a hard layer having a polyester or copolyester polymer resin and a soft layer having polybutylene terephthalate containing polytetramethylene ether glycol, which are regularly or irregularly laminated in a multilayer form.



Developing roller

Tue, 05 May 2015 08:00:00 EDT

Provided is a developing roller in which printing quality, in particular, one-dot level fine line printing quality is improved by securing a high resistance value and high surface potential on the surface layer. The elastic roller comprises successively on the outer periphery of a shaft 1 an elastic layer 2, an intermediate layer 3, and a surface layer 4. The surface layer 4 contains a urethane (meth)acrylate oligomer obtained by allowing polybutadiene polyol or hydrogenated polybutadiene polyol, polyisocyanate, and (meth)acrylate having a hydroxyl group to react.