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1. 发明专利

JPH02103201A CELLULOSE ACETATE 失效
公开(公告)号：JPH02103201A
公开(公告)日：1990-04-16
申请号：JP25644988
申请日：1988-10-12
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , SAKA SHIRO , MORITA YOSHIKO
IPC分类号： C08B3/06
摘要： PURPOSE:To provide the title product outstanding in filterability, obtained using a low-grade pulp of low alpha-cellulose content, having such a characteristic that when only the main peak portion of the GPC pattern is dispensed, the content of xylose plus mannose in its constituent saccharide composition components falls at or above a specified value. CONSTITUTION:The objective secondary cellulose acetate outstanding in filterability, transparency and spinnability, suitable for cellulose acetate fiber for tobacco filter tow, acetate fiber for clothing, hollow fiber, etc., having such a characteristic that when only the main peak portion of the GPC pattern measured in a cellulose acetate/acetone solvent system is dispensed, the content of xylose plus mannose in its constituent saccharide composition components is >=2mol%.

2. 发明专利

JPH0199646A SEPARATING AGENT FOR BIOCHEMICAL SUBSTANCE 失效
公开(公告)号：JPH0199646A
公开(公告)日：1989-04-18
申请号：JP25620087
申请日：1987-10-13
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , NAKAMURA HIROYUKI , MAEDA KAZUO
IPC分类号： C07H21/04 , B01J20/26 , C07H21/00 , C07H21/02
摘要： PURPOSE:To obtain the title separating agent capable of separating a biochemical substance selected from pyrogens, nucleic acids, and nucleic acid-related substances with high efficiency with only one operation by composing the agent out of a cross-linked quaternary nitrogen-contg. water-soluble polymer. CONSTITUTION:A water-soluble polymer of the structure having a part wherein four hydrocarbon residues and one acid radical are bonded to a nitrogen atom. is cross-linked in the molecules of a water-soluble polymer, and a cross-linked quaternary nitrogen-contg. water-soluble polymer is obtained. When the obtained polymer is used as the separating agent for a biochemical substance selected from pyrogens, nucleic acids, and nucleic acid-related substances, the biochemical substance can be efficiently separate with only one operation. Furthermore, the separating agent does not dissolve other coexistent chemicals, and is not left in the soln. after separation. Cationic hydroxyalkylcellulose cross-linked with 1,3-dichloro-2-propanol, etc., is most preferably used as the cross-linked quaternary nitrogen-contg. water-soluble polymer.

3. 发明专利

JPS6343901A HYDROXYETHYLCELLULOSE 失效
公开(公告)号：JPS6343901A
公开(公告)日：1988-02-25
申请号：JP18916286
申请日：1986-08-12
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , WATABE KEIZO , KURODA YOSHINORI
IPC分类号： C08B11/08
摘要： PURPOSE:To obtain hydroxyethylcellulose excellent in a thickening effect and suitable as a paint thickener or the like, comprising hydroxylethylcellulose having a viscosity in a specified range and a low content of low-MW components. CONSTITUTION:Hydroxyethylcelluloses having a viscosity of 2,000-8,000cP (as measured in a 2wt% aqueous solution at 25 deg.C with a Brookfield viscometer under measurement conditions including a No.4 rotor and a revolution speed of 60rpm are prepared. The MW distributions of these hydroxyethylcelluloses are determined with an MW distribution determination instrument consisting of a combination of a gel permeation chromatograph with a small-angle light scattering apparatus and those hydroxyethylcelluloses which have a content of a component of an MW

4. 发明专利

JPH01117823A SEPARATING AGENT FOR BIOCHEMICAL SUBSTANCE 失效
公开(公告)号：JPH01117823A
公开(公告)日：1989-05-10
申请号：JP27188487
申请日：1987-10-29
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , ASAI YUKIO , WATABE KEIZO
IPC分类号： A61K9/08 , B01D21/01 , C02F1/56
摘要： PURPOSE:To obtain a separating agent for biochemical substance consisting of a quaternary nitrogen-containing water soluble high polymer and selected from pyrogen and nucleic acid related substance. CONSTITUTION:A biochemical substance is separated from a mixture containing one or more kind of pyrogen and nucleic acid related substance using a quaternary nitrogen-containing water soluble high polymer (e.g., cationic hydroxyalkylcellulose). The pyrogen is a general term of a substance capable of generating heat by biological administration and nucleic acid related substance is an ingredient constituting nucleic acid such as nucleotide or a complex of the nucleotide and sugar, lipid, protein, etc. and useful as a seasoning and medicine. The separating agent for the biological substance has pyrogen removing effect sufficiently improved as well as excellent properties causing no decomposition of medicine to be treated.

5. 发明专利

JPS6425791A NUCLEIC ACID-REMOVING AGENT 失效
公开(公告)号：JPS6425791A
公开(公告)日：1989-01-27
申请号：JP18071587
申请日：1987-07-20
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , KIYOSE ATSUNOBU
IPC分类号： C07H21/00 , C08B11/14
摘要： PURPOSE:To provide an easily available novel nucleic acid-removing agent composed of a cationic hydroxyalkylcellulose, exhibiting sufficient effect to remove nucleic acid and having selectable cationization degree. CONSTITUTION:The objective nucleic acid-removing agent is composed of a cationic hydroxyalkylcellulose. The cationic hydroxyalkylcellulose has a cationizing agent substitution degree of preferably >=1. The cationizing agent is, e.g., glycidyl trimethylammonium chloride. Concrete method for the removal of nucleic acid is, e.g., addition of an aqueous solution of a cationic hydroxyalkylcellulose to an aqueous solution containing a nucleic acid, stirring of the mixture for 30min, centrifugal separation of the product and separation of the supernatant liquid.

6. 发明专利

JP2538323B2 失效
公开(公告)号：JP2538323B2
公开(公告)日：1996-09-25
申请号：JP25644988
申请日：1988-10-12
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , SAKA SHIRO , MORITA YOSHIKO
IPC分类号： C08B3/06

7. 发明专利

JPH0310680A COMPOSITION FOR CULTURE MEDIUM 失效
公开(公告)号：JPH0310680A
公开(公告)日：1991-01-18
申请号：JP14581389
申请日：1989-06-08
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , INOUE KOICHI
IPC分类号： C12N1/00 , C12N1/20 , C12R1/19
摘要： PURPOSE:To provide the subject composition having excellent high pressure stability such as flow resistance and decomposition resistance and having improved stability at high temperature (>=80 deg.C) by adding curdlan as a medium agent to a gel medium for thermophilic bacteria. CONSTITUTION:At least curdlan is added as a medium agent to a gel medium for thermopholic bacteria to provide the objective composition. The curdlan in the medium is preferably >=10wt.%.

8. 发明专利

JPH01106898A SEPARATION INTO NUCLEIC ACID, ITS RELATING SUBSTANCES AND PROTEIN 失效
公开(公告)号：JPH01106898A
公开(公告)日：1989-04-24
申请号：JP26351087
申请日：1987-10-19
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , KAGEYAMA SADAO
IPC分类号： C07H21/00 , B01J20/26
摘要： PURPOSE:To separate a mixture of nucleic acids and proteins into the nucleic acids and the protein through simple operations in high efficiency and yield, by bringing the mixture into contact with cross-linked and cationized hydroxyalkylcellulose to adsorb only nucleic acids, then eluting the nucleic acids using a salt. CONSTITUTION:Hydroxyethylcellulose is cationized with glycidyltrimethylammonium chloride or the like and crosslinked with 1,3- dichloro-2-propanol. The cationized and crosslinked hydroxyethylcellulose is packed in a column, and an aqueous solution containing nucleic acids and their relating substances such as nucleic acids from calf thymus and protein such as egg albumin, is passed through the column to effect selective adsorption of nucleic acids and their relating substances. Then, the column is washed, and the adsorbate is eluted with an aqueous solution containing a salt such as ammonium acetate, whereby the nucleic acids and their relating substances are separated from the protein.

9. 发明专利

JPS63283574A COMPOSITION FOR CULTURE MEDIUM 失效
公开(公告)号：JPS63283574A
公开(公告)日：1988-11-21
申请号：JP11913787
申请日：1987-05-18
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , NIKAIDO TERUYUKI , INOUE KOICHI
IPC分类号： C12N1/00
摘要： PURPOSE:To make a medium useful as a common medium and to enable stable use as a thermophilic medium at about 70-90 deg.C, by preparing a composition for a medium containing a hydroxyalkyl cellulose. CONSTITUTION:A hydroxyalkyl cellulose such as hydroxyethyl cellulose, hydroxypropyl cellulose or hydroxybutyl cellulose is blended with a substance required by cells and heated to prepare a gelatinous composition for medium. The degree of substitution is preferably in a range of about 0.5-4 degree of mol substitution and the concentration of the hydroxyalkyl cellulose is preferably a range of about 1-20%. The prepared gelatinous composition is usable as a common medium and further especially preferable as a medium for thermophilic cells requiring culture in a range of about 70-90 deg.C.

10. 发明专利

JPS63283573A COMPOSITION FOR CULTURE MEDIUM 失效
公开(公告)号：JPS63283573A
公开(公告)日：1988-11-21
申请号：JP11913687
申请日：1987-05-18
申请人： DAICEL CHEM
发明人： UEDA KAZUYOSHI , INOUE KOICHI
IPC分类号： C12N1/00
摘要： PURPOSE:To enhance safety in cultivation at about 90 deg.C, by containing at least a carboxyalkyl cellulose having 1-4C alkyl groups and a polyvalent metallic salt and preparing a composition for a culture medium. CONSTITUTION:A carboxyalkyl cellulose having 1-4C alkyl groups and a polyvalent metallic salt are previously pulverized in a pulverizer, such as ball mill, as finely as possible and homogeneously blended. The above-mentioned blend is then added to water containing a predissolved substance required by microbial cells and stirred to prepare a gelatinous composition for a culture medium. The blending ratio of the carboxyalkyl cellulose to the polyvalent metallic salt is preferably 100pts.wt. of the former to about 1-200pts.wt. of the latter. Aluminum chloride, aluminum acetate, ferrous chloride, ferric chloride, copper salt, calcium salt, etc., are cited as the polyvalent metallic salt.

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