Patent application number | Description | Published |
20080249049 | Polycationically Charged Polymer and the Use of the Same as a Carrier for Nucleic Acid - A composition for the delivery of nucleic acid to target cells or tissues, which comprises polycationically charged polymer as a carrier of nucleic acid is provided. Said polycationically charged polymer is a polymer which may comprise a charged polymer segment having a main chain based on poly(amino acid), polysaccharide, polyester, polyether, polyurethane or vinyl polymer and having, as a side chain, a group of formula —NH—(CH | 10-09-2008 |
20090012203 | Epoxy Resin and Epoxy Resin Composition - [PROBLEMS] The present invention relates to a crystalline epoxy resin, which gives a cured object excellent in various properties including flame retardancy, low water absorption, and impact resistance. The object of the present invention is to provide epoxy resin which is useful as an optical material, an epoxy resin composition containing crystals of the epoxy resin having excellent storage stability and a cured object obtained from the composition.
| 01-08-2009 |
20090054587 | EPOXY RESIN, EPOXY RESIN COMPOSITION, AND PREPREG AND LAMINATED PLATE USING THE EPOXY RESIN COMPOSITION - An object of the present invention is to provide an epoxy resin exhibiting superior heat resistance, dielectric properties, water resistance, and workability, a resin composition containing the epoxy resin, and a prepreg and a laminated plate. The epoxy resin of the invention is expressed by the following formula. (In the formula, R represents a hydrocarbon group having a carbon number of 1 to 4. m Represents an integer of 1 to 4 and when m is 2 to 4, R's may be the same or different. n Represents a positive number of 1 to 6 on average.) The epoxy resin composition of the invention contains the epoxy resin of the invention and a curing agent. | 02-26-2009 |
20090069513 | EPOXY RESIN, METHOD FOR PRODUCING SAME AND USE THEREOF - An object of the present invention is to provide a multifunctional epoxy resin that is in a liquid state and that has a multifunctional structure. The multifunctional epoxy resin can be used as a reactive diluent and also used for a wide range of applications such as a molding material, a casting material, a laminating material, a paint, an adhesive, and a resist. The epoxy resin of the present invention is produced by glycidylation of dipentaerythritol represented by formula (1): | 03-12-2009 |
20090117388 | Epoxy Resin, Curable Resin Composition and Cured Product Thereof - Disclosed is a phenol aralkyl epoxy resin having a structure wherein at least a phenol or a naphthol is bound by using an aralkyl group as a linking group and a structure represented by formula (1) below, while satisfying the condition 1 below. This epoxy resin is excellent in workability during production of a composition and is easy to control quality. Condition 1: The following relation (α) is satisfied with A being the hydroxyl equivalent (as measured in accordance with JIS K 0070) of a phenol-modified epoxy resin obtained by adding an equivalent molar amount of phenol relative to the epoxy equivalent of the epoxy resin, and B being the epoxy equivalent of the epoxy resin. 50≦1000×(A−B)/B≦250 (α) | 05-07-2009 |
20090131607 | Epoxy Resin, Epoxy Resin Composition, Photosensitive Resin Composition and Cured Object Obtained Therefrom - [Problems] To provide an epoxy resin giving a cured object having high heat resistance, which is improved in impact resistance and moisture resistance as compared with conventional high-heat-resistance epoxy resins. | 05-21-2009 |
20090286929 | Phenolic Resin, Process for Production Thereof, Epoxy Resin, and Use Thereof - A phenol aralkyl type phenolic resin represented by the general formula (1), wherein the total content of the compounds represented by formulae (2) to (4) is 58 to 92% as determined by GPC and the contents of the compounds represented by formulae (2) to (4) as determined by HPLC satisfy the following relationship: 0.60≦(2 | 11-19-2009 |
20100179353 | Modified Liquid Epoxy Resin as Well as Epoxy Resin Composition Using the Same and Cured Product Thereof - This invention provides a modified liquid epoxy resin having a low viscosity and a high performance, which is obtained by reacting a mixture of a bisphenol and a phenol aralkyl resin with an epiholohydrin. The bisphenol is preferable to be bisphenol F and is further preferable to have a bifunctional form purity as detected by gel permeation chromatography at UV 254 nm of not less than 95% by area in view of the fluidity. Moreover, the mixture of bisphenol and the phenol aralkyl resin is preferable to have a ratio of the phenol aralkyl resin of 10-70% by mass. | 07-15-2010 |
20120196810 | ANIONIC POLYMER, POLYION COMPLEX AND TERNARY POLYMER COMPOSITE USING ANIONIC POLYMER, AND PHARMACEUTICAL COMPOSITION - There are provided an anionic polymer, a polyion complex, and a ternary polymer composite, each of which is stable in a biological environment and is capable of realizing small RNA delivery without causing any undesired immune response. An anionic polymer according to an embodiment of the invention includes: a main chain which includes repeating units having carboxyl groups; and a side chain which is linked with part of the carboxyl groups in the main chain and is represented by the following formula: | 08-02-2012 |