| DU PONT-MITSUI POLYCHEMICALS CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20120108754 | POLYMER COMPOSITION, METHOD FOR PRODUCING NON-STRETCHED FILM, NON-STRETCHED FILM, HEAT SEAL MATERIAL, AND PACKING MATERIAL - Provided is a polymer composition that contains an ionomer which includes an ethylene-α,β-unsaturated carboxylic acid copolymer and a ternary polymer of ethylene-α,β-unsaturated carboxylic acid-α,β-unsaturated carboxylic acid ester, and a propylene-based polymer, wherein a melt flow rate (MFR) value (under a load of 2160 g) of the ionomer at a process temperature in forming a film by T-die melting casting method is from 50% to 250% based on an MFR value of the propylene-based polymer under the same condition. | 05-03-2012 |
| 20120094045 | RESIN MOLDING APPARATUS, PROCESS FOR MANUFACTURING RESIN MOLDED PRODUCT, HOLLOW MOLDED PRODUCT AND CONTAINER - The resin molding apparatus ( | 04-19-2012 |
| 20120088105 | RESIN PELLET AND METHOD FOR PRODUCING THE SAME - A resin pellet of the present invention includes a resin base material and a plurality of microparticles embedded in the resin base material. The resin pellet is covered with the plurality of microparticles on the surface of the resin base material. According to the present invention, it is possible to prevent detachment of the microparticles to be applied on the resin base material and to effectively suppress blocking of resin pellets. | 04-12-2012 |
| 20110319566 | SHEET FOR SOLAR CELL ENCAPSULANT AND SOLAR CELL MODULE - Provided is a sheet for a solar cell encapsulant containing (A) an ethylene-based polymer having a melting point of 90° C. or higher and containing an ethylene-derived constituent unit as a main component; (B) an ethylene-vinyl acetate copolymer having a vinyl acetate-derived constituent unit at a content ratio of from 19% to 40% by mass; and (C) a silane coupling agent having an amino group. The sheet for solar cell encapsulant has the excellent transparency and flexibility possessed by an ethylene-vinyl acetate copolymer. Furthermore, a crosslinking treatment is substantially unnecessary, and adhesiveness and adhesion stability that are appropriate for practical use are obtained. | 12-29-2011 |
| 20110319540 | AQUEOUS DISPERSION, METHOD FOR PRODUCING THE SAME, AND COATED SUBSTRATE - Disclosed is a method for producing an aqueous dispersion, which includes using ammonia (B) to neutralize and disperse an ethylene/methacrylic acid copolymer (A) in an aqueous medium in the presence of monohydric alcohol (C) containing 3 or more carbon atoms. The process allows for dispersion with ammonia and production of a low viscosity aqueous dispersion with better dispersibility and higher uniformity of the dispersed particles than a conventional process with ammonia neutralization. | 12-29-2011 |
| 20110318590 | METAL LAYER-ATTACHED FILM FOR ELECTRONIC COMPONENT, METHOD FOR PRODUCING THE FILM, AND USE THEREOF - Disclosed are a metal layer-attached film for an electronic component having an adhesive layer excellent in adhesion to a metal and excellent in the productivity, a method for producing the film, and use application of the film. The metal layer-attached film for an electronic component has a metal layer stacked on at least one surface of a resin film through an adhesive layer, wherein the adhesive layer contains an ethylene-unsaturated carboxylic acid copolymer or a metal salt thereof. | 12-29-2011 |
| 20110272026 | MULTILAYER SHEET, ENCAPSULANT FOR SOLAR CELL ELEMENT, AND SOLAR CELL MODULE - A multilayer sheet including an (A) layer containing an ethylene type zinc ionomer as a main component and a silane coupling agent, and a (B) layer containing a polyethylene-based copolymer with a melting point of 90° C. or higher as a main component and a silane coupling agent having a content ratio with respect to the resin material that is lower than a content ratio of the silane coupling agent with respect to resin material in the (A) layer, wherein the total thickness of the (A) layer and the (B) layer is from 0.1 to 2 mm. Such multilayer sheet may be superior in adhesive strength, durability and heat resistance, and obtained at a suppressed cost. | 11-10-2011 |
| 20110263792 | PROCESS FOR PRODUCING MASTERBATCH, MASTERBATCH, AND USE THEREOF - Disclosed is a process for producing a masterbatch, comprising a step of melt-kneading an ionomer that an ethylene-unsaturated carboxylic acid copolymer is partially neutralized with potassium and a hydrophobic polymer comprised of a hydrocarbon compound, and a step of drying the melt-kneaded mixture at a temperature of not less than the Vicat softening point of the ionomer after the melt-kneading. | 10-27-2011 |
| 20110220728 | PROTECTIVE FILM FOR ELECTRONIC COMPONENT, METHOD FOR MANUFACTURING THE SAME, AND USE THEREOF - Disclosed is a protective film for an electronic component comprising a base material containing a heat resistant resin and an adhesive layer formed on the base material containing an ethylene-unsaturated carboxylic acid copolymer or a metal salt thereof, wherein the ethylene-unsaturated carboxylic acid copolymer or the metal salt thereof contains 3 to 30% by weight of the structural unit derived from an unsaturated carboxylic acid. | 09-15-2011 |
| 20110214699 | METHOD FOR CLEANING RESIN PELLETS - Disclosed is a method for producing a resin film or a resin sheet comprising a step of cleaning resin pellets and a step of forming the resin film or the resin sheet by using the cleaned resin pellets. The step of cleaning the resin pellets comprises a step of introducing the resin pellets and water into a first tube body, and a step of conveying the resin pellets and the water toward a discharge opening in the first tube body, and cleaning the resin pellets by removing foreign matters from the surfaces of the resin pellets by water flow. | 09-08-2011 |
| 20110210481 | MANUFACTURING METHOD OF SYNTHETIC RESIN HOLLOW BODY - A manufacturing method of a synthetic resin hollow body in which a molten resin is injected for an over-molding outside a hollow molding body made of a resin provided with a hollow body and at least an opening portion to form a resin sheathing body in an integrating manner with the hollow molding body. The method includes the step of injecting the molten resin for an over-molding under the state in which the hollow molding body is partially or wholly filled with a fluid substance. The manufacturing method of a synthetic resin hollow body is capable of suppressing resin cost and operation cost and can improve decorating property. | 09-01-2011 |
| 20110130519 | STYRENE-BASED RESIN-CONTAINING COMPOSITION AND FORMED ARTICLE - Provided is a styrene-based resin-containing composition including (A) a polymer saponified product which is obtained by saponifying an ethylene-unsaturated carboxylic acid ester copolymer with potassium and has a potassium ion concentration in the range of 0.1 to 5.8 mol/kg, in an amount of 2 parts by mass or more and less than 100 parts by mass, and (B) a styrene-based resin, in an amount of more than 0 parts by mass and 98 parts by mass or less, the composition having a potassium ion concentration of 0.002 to 5.8 mol/kg. | 06-02-2011 |
| 20110114653 | RESIN MOLDING APPARATUS, RESIN MOLDING METHOD, AND RESIN CONTAINER - A resin molding apparatus of a simplified structure is provided that offers high handling efficiency by a work robot, thereby improving a throughput. The resin molding apparatus ( | 05-19-2011 |
| 20110108094 | LAMINATED SHEET FOR SOLAR CELL AND SOLAR CELL MODULE USING THE SAME - Provided is a laminated sheet for solar cell having a back sheet base material including a fluoro-resin or a polyester resin, and a sealing material layer which includes an ethylene copolymer composition containing a copolymer of an ethylene and a polar monomer which has a polar group selected from a group consist of a carboxylic acid group and a group derived from a carboxylate and a dialkoxysilane having an amino group is laminated on a surface of the back sheet base material where a chemical treatment or a physical treatment for improving adhesiveness has been applied, by a melt extrusion lamination method. Thereby, a laminated sheet having excellent productivity and excellent interlayer adhesion strength between the back sheet and the sealing material is obtained. | 05-12-2011 |
| 20110105681 | ETHYLENE COPOLYMER COMPOSITION, SHEET FOR SEALING A SOLAR CELL ELEMENT, AND SOLAR CELL MODULE - An ethylene copolymer composition which includes a zinc ionomer containing, as a main component, a copolymer having a constituent unit derived from ethylene and a constituent unit derived from (meth)acrylic acid, and a dialkoxysilane having an amino group, is provided. This makes it possible to increase the stability during sheet production. It is preferable that the content ratio of the dialkoxysilane is 15 parts by mass or less based on 100 parts by mass of the zinc ionomer. | 05-05-2011 |
| 20110071259 | POLYMER COMPOSITION - Provided is a polymer composition including (A) an ionomer containing an ethylene/α,β-unsaturated carboxylic acid copolymer and an ethylene/α,β-unsaturated carboxylic acid/α,β-unsaturated carboxylic acid ester terpolymer, and (B) a propylene-based polymer, wherein the mass of constituent units derived from the α,β-unsaturated carboxylic acid ester is from 1 to 4.5% by mass of the entire mass of the ionomer. Through this, a high seal strength may be obtained in a high-temperature range when forming a lock seal, while a high seal strength, as compared with the related art, can be stably obtained over a wide temperature range with a temperature dependence suppressed when forming a peelable seal. | 03-24-2011 |
| 20110061735 | CROSSLINKABLE ETHYLENE COPOLYMER COMPOSITION, ENCAPSULATING SHEET FOR SOLAR CELL ELEMENT COMPOSED OF THE SAME, AND SOLAR CELL MODULE USING THE SHEET - The present invention provides a crosslinkable ethylene copolymer composition which is superior in transparency, heat resistance, adhesive property, flexibility, moldability, durability, and the like, as well as in insulating property, and which shows less decrease in adhesive property with time and can maintain the adhesive property for a long period, and a crosslinkable sheet composed of said composition, and an encapsulating sheet for solar cell and a solar cell module. More in detail, the present invention relates to a crosslinkable ethylene copolymer composition comprising a dialkoxysilane having a double bond in a ratio of 3 parts by weight or less to 100 parts by weight of ethylene copolymer, and a crosslinked sheet of said composition, and further to an encapsulating sheet for solar cell composed of said composition and a solar cell module using the sheet. | 03-17-2011 |
| 20110034633 | Thermoplastic resin composition, process for manufacture and use thereof - A process for manufacturing a thermoplastic resin composition including 73 to 95.5 parts by weight of (A) an ionomer wherein 20 to 90% of carboxyl group of ethylene/(meth)acrylic acid copolymer is neutralized by metal ion; 0.5 to 7 parts by weight of (B) a copolymer of ethylene or α-olefin, containing glycidyl (meth)acrylate or unsaturated glycidyl ether, optionally further containing vinyl ester or unsaturated carboxylic acid ester; and 4 to 20 parts by weight of (C) propylene/α-olefin copolymer, the process including melt-blending the ionomer (A) with melt-blended mixture of (B) the copolymer of ethylene or α-olefin, containing glycidyl (meth)acrylate or glycidyl unsaturated ether, or optionally further containing vinyl ester or unsaturated carboxylic acid ester and (C) the propylene/α-olefin copolymer. | 02-10-2011 |
| 20100317802 | TACKY RESIN COMPOSITION AND PRESSURE-SENSITIVE ADHESIVE FILM OR SHEET - A tacky resin composition which has proper initial tackiness, is sufficiently inhibited from rising in tackiness with time, can keep tackiness at a proper range even when it receives a slight heat history or is stored for a long time, has very small dependence on peeling speed, and can provide high transparency to a pressure-sensitive adhesive film or sheet as required, and a pressure-sensitive adhesive film or sheet for the surface protection of an article, which is obtained form the tacky resin composition. | 12-16-2010 |
| 20100313956 | ENCAPSULATING MATERIAL FOR SOLAR CELL - A solar cell encapsulated with an encapsulating material which is a non-crystalline or low-crystalline α-olefin-based copolymer or its composition (I). The composition (C) can contain 50 to 100 parts by weight of non-crystalline α-olefin polymer (A) which meets the following requirements: (a) the α-olefin having 3 to 20 carbon atoms is not less than 20 mol %, (b) practically no melt peak as measured by a differential scanning calorimeter is observed, and (c) the Mw/Mn is not more than 5, and 50 to 0 parts by weight of crystalline α-olefin polymer (B) (the total of (A) and (B) being 100 parts by weight). The non-crystalline or low-crystalline α-olefin copolymer may also have a crystallinity of not higher than 40% as measured by use of X rays. | 12-16-2010 |
| 20100255302 | ADHESIVE FILM OR SHEET - [Problem] To provide an adhesive film or sheet for protecting the surfaces of articles having proper initial adhesive force, sufficiently suppressing an increase in the adhesive force after aged, maintaining a suitable adhesive force in a proper range despite of being subjected to thermal hysteresis to some extent or even after preserved for extended periods of time and, as desired, being capable of imparting a high degree of transparency to the adhesive film or sheet. | 10-07-2010 |
| 20100252477 | COMPOSITE CONTAINER - [Problem] It is an object to provide a composite container in which a shape and a profile of a resin hollow molding body can be discriminated with clarity in the case in which a visual contact is carried out to the inside resin hollow molding body via an outside transparent resin sheathing body, whereby a design property can be displayed to a satisfactory extent, and in which a design property can be displayed to a satisfactory extent even by a combination of the resin hollow molding body and the outside transparent resin sheathing body. | 10-07-2010 |
| 20100247939 | IONOMER, RESIN COMPOSITION CONTAINING THE IONOMER, UNSTRETCHED FILM, SHEET OR MOLDED BODY EACH MADE OF THE COMPOSITION, AND LAMINATE COMPRISING LAYER OF THE UNSTRETCHED FILM - [Problem] It is an object to provide an unstretched film and a sheet that are excellent in an antistatic property and transparency, a resin composition that is used in producing the unstretched film or the sheet and a potassium ionomer that is contained in the composition. | 09-30-2010 |
| 20100229944 | ENCAPSULATING MATERIAL FOR SOLAR CELL - The present invention provides an encapsulating material for a solar cell, which is easy to prepare a solar cell module, and excellent in processability, insulating property, non-corrosion property, transparency, heat resistance, flexibility and the like, and a solar cell module prepared by using the same. The encapsulating material for a solar cell is one consisting of a cross-linkable resin composition (A) containing an ethylene-(meth)acrylic ester copolymer as a base polymer, an organic peroxide and a crosslinking aid wherein the decomposition temperature (temperature for a half-life period of one hour) of the organic peroxide is equal to or lower than 150° C., and total compounding amount of the organic peroxide and the crosslinking aid, is in a range of from 0.5 to 5 parts by weight per 100 parts by weight of the base polymer, and compounding ratio of the organic peroxide and the crosslinking aid (organic peroxide/crosslinking aid) is in a range of from 1/5 to 1/0.1, in weight ratio. | 09-16-2010 |
| 20100204406 | Resin Composition, and Film, Sheet or Laminate Comprising the same Resin Composition - A resin composition comprising at least one copolymer (A) selected from an ethylene/(meth)acrylic acid copolymer (A1) and an ethylene/(meth)acrylic acid/(meth)acrylic acid ester copolymer (A2), and a polyethylene (B), wherein when the total amount of (A) and (B) in the resin composition is set to be 100% by weight, the content of (A) is less than 100 to 46% by weight, the content of (B) is in excess of 0 but not larger than 54% by weight, and (A) contains 0.1 to 5% by weight of a (meth)acrylic acid unit. There are thus provided a resin composition comprising an ethylene/(meth)acrylic acid bicopolymer or an ethylene/(meth)acrylic acid/(meth)acrylic acid ester tercopolymer and a polyethylene, as well as a film or a sheet made from the resin or the resin composition, and a laminate thereof featuring high-speed workability in the extrusion lamination working, particularly excellent adhesiveness to the polar base materials, adhering little in the extrusion-molding machine, without requiring the use of a purging agent and/or a purging resin at the time of changing the kind of the resin or changing the colored lot of the resin, or requiring the purging agent and/or the purging resin in conspicuously small amounts if they are used. | 08-12-2010 |
| 20100197834 | RESIN COMPOSITION BLENDED WITH STARCHY MATERIAL - To provide a molding material having good affinity to a starchy material, is homogeneously compatible therewith even without adding compatibility-imparting agent, can be favorably mold-worked despite the starchy material is blended in large amounts, and features excellent balance between the flexibility and the mechanical properties, as well as excellent moisture permeability, antistatic property and transparence (haze) depending upon the composition that is used. | 08-05-2010 |
| 20100112335 | LAMINATED FILM OR SHEET HAVING A FOAMED RESIN LAYER AND PROCESS FOR PRODUCING THE SAME - A foamed layer-laminated film or sheet having a foamed layer of a thermoplastic resin laminated on a base material such as a paper or PET, and is useful as a material for producing formed articles such as paper containers, aluminum foil containers, packing films and sheets for containing high-temperature foods, beverages and the like owing to its enhanced heat-insulating property. The foamed layer has innumerable fine elongated foamed cells, and local shades of distribution density of the cells create an appearance of vertical striped patterns on a frosted-glass-like translucent background lending the laminated film or sheet well for use as a material for ornamental articles. The invention further provides a process for easily producing the film or sheet maintaining good productivity at a low cost. The laminated film or sheet includes at least a base material and a thermoplastic foamed resin layer, the foaming layer being foamed at the time of extruding a thermoplastic resin composition containing a foaming agent so as to be laminated on the base material. | 05-06-2010 |
| 20100025895 | MANUFACTURING METHOD OF SYNTHETIC RESIN HOLLOW BODY - A manufacturing method of a synthetic resin hollow body in which a molten resin is injected for an over-molding outside a hollow molding body made of a resin provided with a hollow body and at least an opening portion to form a resin sheathing body in an integrating manner with the hollow molding body. The method includes the step of injecting the molten resin for an over-molding under the state in which the hollow molding body is partially or wholly filled with a fluid substance. The manufacturing method of a synthetic resin hollow body is capable of suppressing resin cost and operation cost and can improve decorating property. | 02-04-2010 |
| 20090264573 | Flame-retardant resin composition - To provide a flame-retardant resin composition exhibiting high flame retardance, and excellent char (shell) formation, moldability and mechanical properties, stably without variation. | 10-22-2009 |
| 20090261097 | SYNTHETIC RESIN HOLLOW BODY - A synthetic resin hollow body which includes a hollow molding body made of a resin, the hollow molding body capable of holding a liquid material, and a resin sheathing body formed outside the hollow molding body in an integrating manner with the hollow molding body, wherein the resin sheathing body is made of a highly transparent synthetic resin having a total ray transmittance of at least 80%. The synthetic resin hollow body can exhibit a satisfactory decorating property and a satisfactory recycle property and is hardly damaged. In addition, the product cost and operation cost can be suppressed. | 10-22-2009 |
| 20090120489 | Encapsulating Material for Solar Cell - An encapsulating material for solar cell containing a laminated adhesive and heat resistant layer (A) and a buffering layer (B), wherein a difference in flexural modulus between the heat resistant layer (A) and the buffering layer (B) is at least 30 MPa or more, is provided. The adhesive and heat resistant layer (A) is preferably an olefin polymer (a) having a melting point (according to JIS K7121) of 75° C. or higher and having a storage elastic modulus at 150° C. of 10 | 05-14-2009 |
