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公开(公告)号：AU779638B2
公开(公告)日：2005-02-03
申请号：AU2522100
申请日：2000-03-31
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OISHI AKIHIRO , TAGUCHI YOICHI , FUJITA KENICHI , IKEDA YOSHIKAZU , MASUDA TAKASHI , ISHIGAMI YUTAKA , NAKAYAMA KAZUO , KINUGASA SHINICHI , NAKAHARA HISAE
IPC: C08G63/08 , C08G63/78 , C08G63/82 , C08L101/16
Abstract: A process of producing a polyester or copolyester, wherein at least one cyclic lactone of the following formula (I): wherein n is an integer of 1-4 provided that n is not 2 when only one cyclic lactone is used, is polymerized under a pressure of at least 200 MPa in the absence of any catalyst or in the presence of a metal-free polyesterification catalyst.
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公开(公告)号：JPH10251168A
公开(公告)日：1998-09-22
申请号：JP5283297
申请日：1997-03-07
Applicant: AGENCY IND SCIENCE TECHN
Inventor： FUJITA KENICHI , MURATA KAZUHISA
Abstract: PROBLEM TO BE SOLVED: To obtain the subject novel compound that is useful as a solid catalyst for asymmetric synthesis and as an optical resolution agent, particularly for efficient optical resolution of amines and imines. SOLUTION: This compound is a zirconium phosphate modified with an asymmetric organic group represented by formula I (R is a hydrocarbon group, a hydroxyhydrocarbon or an alkoxyhydrocarbon group), typically a compound of formula II. The compound of formula I is prepared by reaction of (A) zirconium phosphate with (B) an optically active substituted epoxide of formula III. The molar ratio of the component A to the component B is 1/(4-10). A compound of formula I as an optical resolution agent is stirred together with an amine or imine in a proper solvent whereby these compounds are efficiently intercalated between layers to develop enatio-selectivity whereby optical resolution proceeds.
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公开(公告)号：JP2001064370A
公开(公告)日：2001-03-13
申请号：JP24159199
申请日：1999-08-27
Applicant: AGENCY IND SCIENCE TECHN
Inventor： TAGUCHI YOICHI , OISHI AKIHIRO , IKEDA YOSHIKAZU , FUJITA KENICHI , MASUDA TAKASHI
IPC: C08G63/12 , C08G63/16 , C08G63/672 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To produce an aliphatic polyester excellent in mechanical strengths and processibility by incorporating ester structures derived from a 3-alkoxy-1,2- propanediol in a specified content into the same. SOLUTION: This polyester comprises an ester moiety (A) of formula I and an ester moiety (B) of formula II and the molar fraction (r) of moiety B is 0.01-0.10. In the formulas, R1 is a 1-2C divalent aliphatic group; R2 is a 2-12C divalent aliphatic group; (p) is the molar fraction of moiety A contained in the polyester; and R3 is a 1-18C aliphatic group. Preferably, R1 is (CH2)2 and R2 is (CH2)4. This polyester is produced by subjecting an aliphatic dicarboxylic diester of formula III, an aliphatic diol of the formula: HO-R2=OH, and a 3-alkoxy-1,2-propanediol of formula IV to condensation reaction in an amount of the 3-alkoxy-1,2-propanediol used of 0.001-0.10 mol per mol of the aliphatic dicarboxylic diester. In formula III, R4 and R5 are each a 1-4C alkyl.
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公开(公告)号：JP2001064369A
公开(公告)日：2001-03-13
申请号：JP24158599
申请日：1999-08-27
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OISHI AKIHIRO , TAGUCHI YOICHI , FUJITA KENICHI , IKEDA YOSHIKAZU , MASUDA TAKASHI
IPC: C08G63/08 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To industrially advantageously produce a polyester copolymer the composition of which is almost equal to the ratio of raw materials charged and which has a high number average mol.wt. by subjecting a γ-lactone and a β-lactone to ring-opening copolymerization in the presence of a Lewis acid under a specified pressure and at a specified temperature so that the resultant copolymer has a specified number average mol.wt. SOLUTION: A γ-lactone of formula I and a β-lactone of formula II are subjected to ring-opening copolymerization in the presence of a Lewis acid under an ultrahigh pressure of 200 atm or higher and under heating at 30-130 deg.C to produce an aliphatic polyester copolymer having a number average mol.wt. of 5,000 or higher and a ratio of wt. average mol.wt. to number average mol.wt. of 1.1-1.3. Preferably, the copolymer contains 60-95% γ-lactone-derived ester units. It is preferable that the γ-lactone is γ-butryrolactone and that the β-lacone is β-butyrolactone. Examples of the Lewis acid are a boron halide, a metal halide, and a metal alkoxide.
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公开(公告)号：JP2000281767A
公开(公告)日：2000-10-10
申请号：JP9268599
申请日：1999-03-31
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OISHI AKIHIRO , TAGUCHI YOICHI , FUJITA KENICHI , IKEDA YOSHIKAZU , MASUDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To obtain a polyp-γ-butyrolactone having a higher molecular weight from industrially mass-produced cheap γ-butyrolactone by polymerizing γ- butyrolactone through ring opening by heating to a specified temperature under an ultrahigh atmosphere in the presence of a Lewis acid. SOLUTION: γ-Butyrolactone is polymerized through ring opening by heating to 40-160 deg.C. The Lewis acid used is exemplified by a boron halide, a metal halide, or a metal alkoxide and may be used in the form of a mixture with an organic acid. The amount of the Lewis acid used is usually 0.01-5 mol% based on the amount of the γ-butyrolactone used. The ultrahigh pressure ranges from at least 10,000 atm, desirably, at least 12,000 atm to at most about 20,000 atom. The reaction time is usually 10-70 hr. The molecular weight of the obtained poly-γ-butyrolactone ranges from at least 10,000 to at most, usually, about 50,000.
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Patent Agency Ranking
公开(公告)号：JPH10101585A
公开(公告)日：1998-04-21
申请号：JP28025496
申请日：1996-09-30
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , FUJITA KENICHI
IPC: B01J27/055 , C07C2/84 , C07C11/02 , C07C11/04
Abstract: PROBLEM TO BE SOLVED: To obtain the subject catalyst which can produce condensed hydrocarbons in a high selectivity and yield from lower hydrocarbons by allowing an oxide superacid to carry lithium. SOLUTION: This catalyst is for oxidative condensation reaction of lower hydrocarbon such as methane in the presence of oxygen and is prepared by allowing (A) an oxide superacid (for example, acid radicals are supported by a carrier (A1 ) of an oxide of an element in groups 3A, 4A, 4B or group 8) or boron oxide or an oxide of an element in group 6B in the periodic table is supported by a carrier (A1 ) to carry (B) lithium. This catalyst is prepared, for example, by allowing the component A to contain a lithium compound such as lithium hydroxide in an amount of 0.2-10g of lithium compound (calculated as elementary lithium) per 100g of the component A by the impregnation, kneading or physical mixing and firing the mixture at 400-900 deg.C.
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公开(公告)号：JP2000256446A
公开(公告)日：2000-09-19
申请号：JP6083799
申请日：1999-03-08
Applicant: AGENCY IND SCIENCE TECHN
Inventor： TAGUCHI YOICHI , OISHI AKIHIRO , IKEDA YOSHIKAZU , FUJITA KENICHI , MASUDA TAKASHI
Abstract: PROBLEM TO BE SOLVED: To obtain a polyester excellent in mechanical strength and fabricability and having a novel structure by subjecting an aliphatic dicarboxylate, an aliphat ic glycol and monoacylated glycerin to condensation reaction. SOLUTION: The polyester is obtained by subjecting an aliphatic dicarboxylic acid represented by formula III (wherein R1 is an 1-12C divalent aliphatic group; R4 and R5 are each an 1-4C alkyl group; and t is 0 or 1), an aliphatic glycol represented by formula IV (wherein R2 is a 2-12C divalent aliphatic group) and a monoacylated glycerin represented by formula V (wherein R3 is a 6-22C aliphatic group) to condensation reaction. The amount of the component of formula V is 0.001-0.10 mol per 1 mol of the sum of the components of formulas III and IV. By the condensation reaction is obtained a biodegradable aliphatic polyester having a number average molecular weight of 10,000-1,000,000 comprising an ester portion A represented by formula I (wherein p is a molar ratio of the ester portion of the polyester) and an ester portion B represented by formula II (wherein (r) is a molar ratio of the ester portion of the polyester), the molar ratio (r) of the ester portion B being in the range of 0.001-0.10.
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公开(公告)号：JP2000281764A
公开(公告)日：2000-10-10
申请号：JP9339799
申请日：1999-03-31
Applicant: AGENCY IND SCIENCE TECHN
Inventor： OISHI AKIHIRO , TAGUCHI YOICHI , FUJITA KENICHI , IKEDA YOSHIKAZU , MASUDA TAKASHI , ISHIGAMI YUTAKA , NAKAYAMA KAZUO , KINUGASA SHINICHI , NAKAHARA HISAE
IPC: C08G63/08 , C08G63/78 , C08G63/82 , C08L101/16
Abstract: PROBLEM TO BE SOLVED: To provide a process for preparing a polymer polyester or polyester copolymer from a cyclic lactone through ring-opening polymerization. SOLUTION: In a preparation process of a polymer polyester, a cyclic lactone of the formula (wherein, (n) is 1, 3 or 4) is allowed to react under a high- pressure condition of at least 200 MPa without using a catalyst. Alternatively, in the absence of catalysts or in the presence of a non-metal esterification catalyst, a lactone mixture comprising two or more cyclic lactones of the formula is allowed to react under a high-pressure condition of at least 200 MPa.
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公开(公告)号：JPH08165101A
公开(公告)日：1996-06-25
申请号：JP31029394
申请日：1994-12-14
Applicant: AGENCY IND SCIENCE TECHN
Inventor： MURATA KAZUHISA , USHIJIMA YOJI , FUJITA KENICHI
IPC: C01B3/26
Abstract: PURPOSE: To provide a method for producing hydrogen without producing a by-product of carbon dioxide, having a low catalyst deteriorating speed and free from a trouble of the suppression of reaction attributable to the coexistence of carbon dioxide, etc., by thermally cracking a hydrocarbon in the presence of a fine carbonaceous substance having an outer surface area of larger than a specified value. CONSTITUTION: This is a method for producing hydrogen efficiently from a hydrocarbon such as methane without using a heavy metal catalyst. As far as a carbonaceous substance as the catalyst is fine powder having an outer surface area of >=1m /g, other conditions such as production method and raw materials are not specified. For instance, the carbonaceous catalyst is preferably soot, charcoal, ultra fine particle such as activated carbon, carbon nanotube, aggregate carbon or soot-like carbon obtained during arc discharge between carbon electric poles. The hydrocarbon for this process is preferably a hydrocarbon of a gaseous or liquid state at normal temperature having a large hydrogen/carbon ratio. In order to carry out the thermal cracking of the hydrocarbon efficiently, it is diluted with an inert gas such as argon, nitrogen or helium. Preferably, the concentration of the hydrocarbon in a reaction gas is 0.8-5vol.%, the reaction temperature is 400-1200 deg.C, and the contact time of the hydrocarbon gas with the catalyst surface is 0.1-50sec.
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10.发明专利
公开(公告)号：JP2000256418A
公开(公告)日：2000-09-19
申请号：JP5982599
申请日：1999-03-08
Applicant: AGENCY IND SCIENCE TECHN
Inventor： FUJITA KENICHI , TAGUCHI YOICHI , OISHI AKIHIRO , IKEDA YOSHIKAZU
Abstract: PROBLEM TO BE SOLVED: To obtain a novel polystyrene-supported chalcogenocyanate which consists of a polystyrene containing styrene units having a chalcogenocyanate group and is useful as a reaction reagent. SOLUTION: This polystyrene-supported chalcogenocyanate has units of formula I. It is obtained by reacting a potassium chalcogenocyanate and a polystyrene containing units of formula II in a solvent. In the formulas, R1 is a bivalent hydrocarbon; R2 is a bivalent aliphatic group; Ar is an arylene; Z is a bivalent coupling group consisting of a hetero atom or carbonyl; X is a chalcogen atom; Y is a halogen; and s, t, and n are each 0 or 1. Preferably, the polystyrene containing styrene units of formula II is in the form of spherical beads of 400-200 μm (100-400 mesh). A corresponding nucleophilic chalcogen reagent is obtained by reacting a reducing agent such as lithium borohydride or the like in a solvent such as tetrahydrofuran or the like.
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