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公开(公告)号：CA1330049C
公开(公告)日：1994-06-07
申请号：CA580150
申请日：1988-10-14
Applicant: TANABE SEIYAKU CO , DAICEL CHEM
Inventor： SATO TADASHI , WATANABE TAIZO , MINOBE SATOSHI , NISHIMURA TAKASHI , KAGOTANI MASAHIRO , ASE TOMONOBU , HONDA ZENJIRO , NAGAMATSU SHINJI
Abstract: Pyrogens are removed out of a solution thereof by (1) treating the solution with a membrane and then (2) treating the resulting solution with a pyrogen adsorbent. The obtained solution is useful in the pharmaceutical field.
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公开(公告)号：GB2143525B
公开(公告)日：1987-05-07
申请号：GB8416829
申请日：1984-07-02
Applicant: DAICEL CHEM
Inventor： KOJIMA HIDETAKA , KAGOTANI MASAHIRO
IPC: C07C53/12 , B01J31/00 , B01J31/20 , B01J31/28 , C07B61/00 , C07C27/00 , C07C51/00 , C07C51/56 , C07C53/122 , C07C67/00 , C07C51/54 , C07C67/37
Abstract: An O-acetyl compound, such as acetic anhydride, is prepared by carbonylating the corresponding O-methyl compound, such as methyl acetate, by heating the latter at 130 DEG to 250 DEG C. with carbon monoxide of a partial pressure of 1 to 100 kg/cm2 G in the presence of a rhodium catalyst and a iodine compound, whereby the reaction is caused to take place in a reaction solution containing a carboxylic acid in the presence of an aluminum accelerator and a rhodium catalyst treated with hydrogen.
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公开(公告)号：GB2143525A
公开(公告)日：1985-02-13
申请号：GB8416829
申请日：1984-07-02
Applicant: DAICEL CHEM
Inventor： KOJIMA HIDETAKA , KAGOTANI MASAHIRO
IPC: C07C53/12 , B01J31/00 , B01J31/20 , B01J31/28 , C07B61/00 , C07C27/00 , C07C51/00 , C07C51/56 , C07C53/122 , C07C67/00 , C07C51/54 , C07C67/37
Abstract: An O-acetyl compound, such as acetic anhydride, is prepared by carbonylating the corresponding O-methyl compound, such as methyl acetate, by heating the latter at 130 DEG to 250 DEG C. with carbon monoxide of a partial pressure of 1 to 100 kg/cm2 G in the presence of a rhodium catalyst and a iodine compound, whereby the reaction is caused to take place in a reaction solution containing a carboxylic acid in the presence of an aluminum accelerator and a rhodium catalyst treated with hydrogen.
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公开(公告)号：DE3424471A1
公开(公告)日：1985-01-17
申请号：DE3424471
申请日：1984-07-03
Applicant: DAICEL CHEM
Inventor： KOJIMA HIDETAKA , KAGOTANI MASAHIRO
IPC: C07C53/12 , B01J31/00 , B01J31/20 , B01J31/28 , C07B61/00 , C07C27/00 , C07C51/00 , C07C51/56 , C07C53/122 , C07C67/00
Abstract: An O-acetyl compound, such as acetic anhydride, is prepared by carbonylating the corresponding O-methyl compound, such as methyl acetate, by heating the latter at 130 DEG to 250 DEG C. with carbon monoxide of a partial pressure of 1 to 100 kg/cm2 G in the presence of a rhodium catalyst and a iodine compound, whereby the reaction is caused to take place in a reaction solution containing a carboxylic acid in the presence of an aluminum accelerator and a rhodium catalyst treated with hydrogen.
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公开(公告)号：JPS6395238A
公开(公告)日：1988-04-26
申请号：JP24169486
申请日：1986-10-11
Applicant: DAICEL CHEM
Inventor： KAGOTANI MASAHIRO
Abstract: PURPOSE:To obtain particles having excellent particle size uniformity, sphericity and porosity and giving a useful carrier for chromatography by saponification, by forming a droplet of a solution of a cellulose organic acid ester in an aqueous medium and coagulating the droplet with a polyhydric alcohol. CONSTITUTION:An organic solvent solution of a cellulose organic acid ester is dripped into an aqueous medium to form liquid droplets and a water-soluble polyhydric alcohol is added to the resultant droplet/aqueous medium dispersion system to coagulate the ester in the liquid droplet. The water-soluble polyhydric alcohol is selected from ethylene glycol, glycerol and 1,3-propanediol. The cellulose organic acid ester is e.g. cellulose triacetate, cellulose acetate butyrate, etc., and the solvent is preferably a mixed solvent containing methanol, propionic acid ester, acetone, etc.
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Patent Agency Ranking
公开(公告)号：JPS62253601A
公开(公告)日：1987-11-05
申请号：JP9854286
申请日：1986-04-28
Applicant: DAICEL CHEM
Inventor： KAGOTANI MASAHIRO , KIYOSE ATSUNOBU
IPC: C08B3/06
Abstract: PURPOSE:To obtain the titled particles especially suitable as chromatography carrier, having uniform particle size and high sphericity, by bringing a cellulose derivative existing as liquid droplets into contact with an aqueous medium containing an alkali and hydrolyzing. CONSTITUTION:A cellulose derivative (e.g. cellulose triacetate, cellulose diacetate, etc.) which can dissociate its substituent group by hydrolysis reaction and be converted into cellulose is dissolved in an organic solvent (e.g. mixed solvent obtained by adding 5-30vol% methanol, etc., to methylene chloride), dispersed into an aqueous medium while letting the cellulose derivative keep in a dissolved state in such a way that the solution forms liquid droplets and the cellulose derivative in the liquid droplets is hydrolyzed with an alkali in the aqueous medium. The alkali may be precedingly added to the aqueous medium before the liquid droplets of the cellulose derivative solution is formed or may be added after the formation of the liquid droplets.
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公开(公告)号：JPS627701A
公开(公告)日：1987-01-14
申请号：JP14610685
申请日：1985-07-03
Applicant: DAICEL CHEM
Inventor： KAGOTANI MASAHIRO , SUTEFUAN HANESHIAN , SEI TAKESHI
IPC: C08B3/06
Abstract: PURPOSE:To obtain an acetyl cellulose having low substitution degree and containing relatively large amount of sec-hydroxyl group in the molecule, by treating a cellulose acetate having high substitution degree under a specific hydrolysis condition. CONSTITUTION:A cellulose acetate having high substitution degree is partially hydrolyzed by treating the cellulose acetate in the presence of an alkali metal hydroxide (e.g. NaOH, KOH, etc.) and hydrogen peroxide to effect the preferential formation of sec-hydroxyl group. The amount of the alkali metal hydroxide is preferably >=1 mol-equivalent based on the glucose anhydride unit of the cellulose. The reaction is carried out preferably in a mixture of an organic solvent (e.g. THF, dioxane, etc.) and water.
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公开(公告)号：JPS59109245A
公开(公告)日：1984-06-23
申请号：JP21965082
申请日：1982-12-15
Applicant: Daicel Chem Ind Ltd , Kuraray Co Ltd
Inventor： KOJIMA HIDETAKA , HORIKAWA TAKESHI , KAGOTANI MASAHIRO
IPC: C07C45/50 , B01J31/40 , B01J38/48 , C07B61/00 , C07C45/00 , C07C45/49 , C07C45/80 , C07C47/02 , C07C67/00
CPC classification number: B01J31/24 , B01J31/2404 , B01J31/4046 , B01J2231/321 , B01J2531/822 , C07C45/49 , C07C45/80 , Y02P20/584 , C07C47/19
Abstract: PURPOSE: To obtain a catalyst keeping high activity by treating a rhodium- tertiary phosphine type catalyst solution separated from a hydroformylation reaction mixture with a mixture of CO and H
2 .
CONSTITUTION: A rhodium-tertiary phosphine (triphenylophosphine, tritolylphosphine, triphenylphosphite or the like) catalyst solution separated from the hydroformylation reaction mixture of aryloxy compounds is treated with the gaseous mixlture of CO/H
2 in the state of solution (org. solvents such as benzene, toluene). The gaseous mixture of CO/H
2 contains 1W80% CO, preferably 5W50%, and 20W99% H
2 , preferably 50W95%. The treatment is carried out under the conditions of 1W20kg/cm
2 pressure and 40W100°C temp.
COPYRIGHT: (C)1984,JPO&JapioAbstract translation: 目的：通过处理由加氢甲酰化反应混合物与CO和H 2的混合物分离的铑 - 叔膦型催化剂溶液，获得催化剂保持高活性。 构成：用芳族氧化合物的加氢甲酰化反应混合物分离出的铑 - 叔膦（三苯膦，三苯基膦，三苯基亚磷酸酯等）催化剂溶液用溶液状态的CO / H 2气体混合物（有机溶剂如苯 ， 甲苯）。 CO / H 2的气体混合物含有1-80％CO，优选5-50％，和20-99％H 2，优选50-95％。 处理在1-20kg / cm 2压力和40-100℃温度的条件下进行。
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公开(公告)号：JPH0269180A
公开(公告)日：1990-03-08
申请号：JP21978788
申请日：1988-09-02
Applicant: DAICEL CHEM
Inventor： KAGOTANI MASAHIRO , KIYOSE ATSUNOBU
Abstract: PURPOSE:To polymerize a protein without deteriorating the activity and water- solubility of the protein by treating a protein with a specific water-soluble polysaccharide (derivative) and an aliphatic dialdehyde. CONSTITUTION:The objective polymerized enzyme can be produced by dissolving (A) 0.05-1.5% of a protein, especially an enzyme (e.g., amylase), (B) 0.1-10% of a water-soluble polysaccharide (derivative) containing >=0.02 units of 2- aminoethyl group per one monosaccharide unit and having a molecular weight of 5,000-500,000 (e.g., dextran) and (C) 0.05-1.0% of an aliphatic dialdehyde (e.g., 1,3-dipropanal) in (D) a buffer liquid of pH 6-8 and capable of stably dissolving protein (e.g., phosphoric acid buffer) and reacting the components at 10-40 deg.C for 1-10hr. The obtained polymerized enzyme contains >=0.02 units of 2- aminoethyl group per one monosaccharide unit and contains a water-soluble polysaccharide (derivative) having a molecular weight of 5,000-500,000 and bonded at the 2-aminoethyl group through the aliphatic dialdehyde to the amino group of the enzyme.
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公开(公告)号：JPS63166809A
公开(公告)日：1988-07-11
申请号：JP31277186
申请日：1986-12-27
Applicant: DAICEL CHEM
Inventor： KAGOTANI MASAHIRO , KAINO YOSHIAKI
Abstract: PURPOSE:To obtain a termite repellent having low toxicity with no fear of environmental pollution, having excellent penetration and adsorption in treating wood, etc., capable of sustaining the effects, comprising quaternary ammonium salt of alginic acid as an active ingredient. CONSTITUTION:A termite expellent comprising quaternary ammonium salt of alginic acid, for example, obtained by reacting sodium alginate with a quaternary ammonium salt halide as an active ingredient. The quaternary ammonium salt of alginic acid is dissolved in a lower alcohol such as methanol, ethanol, in 0.1-25wt.% concentration and used. The active ingredient is made into a film on the surface or the surface layer of wood and fixed. Since the film is water-insoluble, it will not flow and since the quaternary ammonium salt has alginic acid as skeleton, it has hydrophilic nature and affinity for wood.
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