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公开(公告)号：DE69635510T2
公开(公告)日：2006-06-08
申请号：DE69635510
申请日：1996-07-03
Applicant: DAICEL CHEM
Inventor： OHTSUKA YOSHIHIRO , OSHINO YASUHIRO , TANAKA MASAKI
Abstract: The present invention is directed to an epoxidized block copolymer (E) obtained by epoxidizing a block copolymer (C) comprising a polymer block (A) composed mainly of a vinyl aromatic hydrocarbon compound and a polymer block (B) composed mainly of a conjugated diene compound or a product (D) of hydrogenation of the block copolymer (C). The epoxidized block copolymer (E) meets at least one of the following requisites: (1) having a molar ratio (R) of contained hydroxyl to epoxy ranging from 0.001 to 0.1, the molar ratio (R) being represented by the formula: R = ÄhydroxylÜ/ÄepoxyÜ (wherein ÄhydroxylÜ represents the amount, in terms of the number of moles, of hydroxyl contained per unit weight of the epoxidized block copolymer and ÄepoxyÜ represents the amount, in terms of the number of moles, of epoxy contained per unit weight of the epoxidized block copolymer); (2) having a gel content of not greater than 5% by weight; and (3) having a chloride ion content of not greater than 7 ppm. This epoxidized block copolymer can be obtained by epoxidizing the above block copolymer in an organic solvent and evaporating off the organic solvent, and compositions comprising the same together with other compounds and resins are useful.
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2.发明公开
公开(公告)号：EP0779303A4
公开(公告)日：2002-10-29
申请号：EP96922215
申请日：1996-07-03
Applicant: DAICEL CHEM
Inventor： OHTSUKA YOSHIHIRO , OSHINO YASUHIRO , TANAKA MASAKI
CPC classification number: C08L53/025 , C08F8/08 , C08F2800/20 , C08L53/02 , C08F297/04 , C08F8/04 , C08F297/046
Abstract: An epoxidized block copolymer (E) produced by epoxidizing a block copolymer (C) comprising a polymer block (A) mainly made from an aromatic vinyl compound and a polymer block (B) mainly made from a conjugated diene compound or a product (D) of hydrogenation of the copolymer (C) and satisfying at least one of the following requirements (1), (2) and (3): (1) the molar ratio R is 0.001 to 0.1, R being defined by the formula: R = [hydroxyl]/[epoxy] (wherein [hydroxyl] is the number of moles of hydroxyl groups contained per unit weight of the epoxidized block copolymer and [epoxy] is that of epoxy groups); (2) the gel content is 5 wt.% or below; and (3) the chloride ion content is 7 ppm or below. The above copolymer (E) can be produced by epoxidizing the block copolymer (C) or (D) in an organic solvent and removing the solvent by evaporation. Compositions comprising the copolymer (E) and other compounds and/or resins are useful.
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公开(公告)号：DE69635510D1
公开(公告)日：2006-01-05
申请号：DE69635510
申请日：1996-07-03
Applicant: DAICEL CHEM
Inventor： OHTSUKA YOSHIHIRO , OSHINO YASUHIRO , TANAKA MASAKI
Abstract: The present invention is directed to an epoxidized block copolymer (E) obtained by epoxidizing a block copolymer (C) comprising a polymer block (A) composed mainly of a vinyl aromatic hydrocarbon compound and a polymer block (B) composed mainly of a conjugated diene compound or a product (D) of hydrogenation of the block copolymer (C). The epoxidized block copolymer (E) meets at least one of the following requisites: (1) having a molar ratio (R) of contained hydroxyl to epoxy ranging from 0.001 to 0.1, the molar ratio (R) being represented by the formula: R = ÄhydroxylÜ/ÄepoxyÜ (wherein ÄhydroxylÜ represents the amount, in terms of the number of moles, of hydroxyl contained per unit weight of the epoxidized block copolymer and ÄepoxyÜ represents the amount, in terms of the number of moles, of epoxy contained per unit weight of the epoxidized block copolymer); (2) having a gel content of not greater than 5% by weight; and (3) having a chloride ion content of not greater than 7 ppm. This epoxidized block copolymer can be obtained by epoxidizing the above block copolymer in an organic solvent and evaporating off the organic solvent, and compositions comprising the same together with other compounds and resins are useful.
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公开(公告)号：JP2000034316A
公开(公告)日：2000-02-02
申请号：JP21986298
申请日：1998-07-17
Applicant: DAICEL CHEM
Inventor： TANAKA MASAKI
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an epoxidized block copolymer scarcely causing the discoloration of a resin due to the corrosion of a material when producing the epoxidized block copolymer with a vented extruder made of a nitrided steel. SOLUTION: When an organic solvent is removed from a mixture comprising the organic solvent and an epoxidized block copolymer which is a reactional product and containing an acid with a vented extruder made of a nitrided steel to provide the epoxidized block copolymer, the sum total of the concentrations of the acid and water in the mixture fed to the vented extruder is
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公开(公告)号：JPH11292926A
公开(公告)日：1999-10-26
申请号：JP10868498
申请日：1998-04-03
Applicant: DAICEL CHEM
Inventor： TANAKA MASAKI , NAGAOKA NORIHIRO
IPC: C08F297/04 , C08F8/04 , C08F8/08
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an epoxidized block copolymer, inhibiting the production of impurities such as fine amounts of a metal and an acid in an epoxidizing reaction solution and the production of polymer impurities generated in dependence on a heating time and a heating temperature. SOLUTION: This method for producing an epoxidized block copolymer comprises preparing a 5-50 wt. % organic solvent solution or slurry of (C) a block copolymer comprising (A) a polymer block consisting mainly of a vinylaromatic hydrocarbon compound and (B) a polymer block consisting mainly of a conjugated diene compound or (D) the hydrogenation product of the block copolymer, adding an epoxidizing agent to the organic solvent solution or slurry to epoxidize the block copolymer or its hydrogenation product, neutralizing the epoxidizing reaction solution with an alkali, concentrating the neutralization product by the use of an evaporator, and further, removing the organic solvent from the concentration solution with a kneading type evaporator.
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Patent Agency Ranking
公开(公告)号：JPH09169814A
公开(公告)日：1997-06-30
申请号：JP34837495
申请日：1995-12-18
Applicant: DAICEL CHEM
Inventor： TANAKA MASAKI , OSHINO YASUHIRO
Abstract: PROBLEM TO BE SOLVED: To produce an epoxy-modified block polymer having a residual organic solvent content of 500ppm or below. SOLUTION: A block copolymer composed of blocks of a polymer based on a vinylaromatic compound and blocks of a polymer based on a conjugated diene or a hydrogenated derivative thereof is mixed with an organic solvent to form a solution or slurry having a polymer concentration of 5-50wt.%, and the block copolymer is epoxidized with an epoxidizing agent. The epoxidation reaction solution is fed into an evaporator and concentrated by the evaporation of the organic solvent, and the concentrated solution is fed into a kneader evaporator to further remove the organic solvent therefrom.
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公开(公告)号：JPH0387194A
公开(公告)日：1991-04-11
申请号：JP22373489
申请日：1989-08-30
Applicant: DAICEL CHEM
Inventor： KAGEYAMA SADAO , TANAKA MASAKI
Abstract: PURPOSE:To obtain the subject substance as an factor of nucleic acid metabolism, protein metabolism, lipid metabolism, etc., without using a sulfide by culturing a microorganism belonging to CONSTITUTION:Acetobacterium genus and having an ability of methanol digestion in a sodium hydrosulfide-containing medium. A microorganism [preferably Acetobacterium woodii BME-76(FERM P-10796)] belonging to Acetobacterium genus capable of digesting methanol and capable of producing vitamin B12 is cultured in a sodium hydrosulfide-containing medium, thus obtaining vitamin B12.
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公开(公告)号：JPH09169816A
公开(公告)日：1997-06-30
申请号：JP34837795
申请日：1995-12-18
Applicant: DAICEL CHEM
Inventor： OSHINO YASUHIRO , TANAKA MASAKI
IPC: C08F8/08 , C08F297/04
Abstract: PROBLEM TO BE SOLVED: To produce an epoxidized block copolymer having a low residual organic solvent content. SOLUTION: A block copolymer composed of blocks of a polymer based on a vinylaromatic compound and blocks of a polymer based on a conjugated diene or a hydrogenated product thereof is mixed with an organic solvent to form an organic solvent solution or slurry having a polymer concentration of 5-50wt.%. The unsaturated C-C bonds present in the polymer blocks in the organic solvent solution or slurry are epoxidized with an epoxidizing agent. The obtained epoxidation solution or slurry is subjected to washing with water and/or neutralization to lower the acid value of the solution or slurry to 5mgKOH/g or below. The epoxidation reaction solution or slurry after being subjected to washing with water and/or neutralization is fed into an evaporator to obtain an epoxidized block copolymer having a residual solvent content of 5,000ppm or below and a gel fraction of 5wt.% or below.
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公开(公告)号：JPH09169815A
公开(公告)日：1997-06-30
申请号：JP34837695
申请日：1995-12-18
Applicant: DAICEL CHEM
Inventor： OSHINO YASUHIRO , TANAKA MASAKI
Abstract: PROBLEM TO BE SOLVED: To produce an epoxidized block copolymer having excellent heat stability by an economically profitable process. SOLUTION: A block copolymer composed of blocks of a polymer based on a vinylaromatic hydrocarbon compound and blocks of a polymer based on a conjugated diene compound or a hydrogenated derivative thereof is epoxidized in an organic solvent. Next, 0.005-5 pts.wt., per 100 pts.wt. finally obtained epoxidized block copolymer, phenolic stabilizer and/or phosphorus stabilizer is added to the epoxidation reaction solution containing the epoxidized block copolymer, and the organic solvent is then removed from the epoxidation reaction solution.
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公开(公告)号：JPH11292927A
公开(公告)日：1999-10-26
申请号：JP10868598
申请日：1998-04-03
Applicant: DAICEL CHEM
Inventor： TANAKA MASAKI
IPC: C08F297/04 , C08F6/10 , C08F8/08
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an epoxidized block copolymer, inhibiting the production of impurities such as fine amounts of a metal and an acid in an epoxidizing reaction solution and the production of polymer impurities generated in dependence on a heating time and a heating temperature. SOLUTION: This method for producing an epoxidized block copolymer comprises epoxidizing (C) a block copolymer comprising (A) a polymer block consisting mainly of a vinylaromatic hydrocarbon compound and (B) a polymer block consisting mainly of a conjugated diene compound or (D) the hydrogenation product of the block copolymer in an organic solvent, adding a polyhydric alcohol to the epoxidation product and subsequently removing the solvent. The method for producing the epoxidized block copolymer comprises preparing a 5-50 wt.% organic solvent or slurry of the component C or its hydrogenation product D, adding an epoxidizing agent to the organic solvent solution or slurry to epoxidize the block copolymer or its hydrogenation product, adding a polyhydric alcohol to the epoxidation solution, concentrating the reaction solution by the use of an evaporator, and further removing the organic solvent from the concentration solution with a kneading type evaporator.
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