公开(公告)号：DE69119966D1

公开(公告)日：1996-07-11

申请号：DE69119966

申请日：1991-03-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MASUDA TAKASHI ,  MURATA KAZUHISA ,  MATSUDA AKIO ,  YAMAZAKI SHINSUKE

IPC: C08L67/04 ,  C08L101/00

公开(公告)号：DE69200950D1

公开(公告)日：1995-02-02

申请号：DE69200950

申请日：1992-03-02

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MURATA KAZUHISA ,  MATSUDA AKIO ,  MASUDA TAKASHI

IPC: H01F1/10 ,  C07C211/14 ,  G03G9/083 ,  H01F1/00 ,  H01F1/42

Abstract: An organic ferromagnetic substance including an amorphous carbonaceous substance in mid course of graphitization prepared from an organic compound having a hydrogen/carbon ratio of 1.7 or more and a process for producing same are disclosed. This organic ferromagnetic substance is stable and easy to produce, and has a high saturation magnetization and is advantageous as an industrial product such as a toner for copiers utilizing its light weight and high saturation magnetization.

公开(公告)号：JP2002105186A

公开(公告)日：2002-04-10

申请号：JP2000304241

申请日：2000-10-03

Applicant: AGENCY IND SCIENCE TECHN ,  DAICEL CHEM

Inventor： MASUDA TAKASHI ,  SO AMIN ,  NAKAYAMA KAZUO ,  SUZUKI KANAME ,  KATAYAMA HIROSHI

IPC: C08G63/78 ,  C08G85/00

Abstract: PROBLEM TO BE SOLVED: To efficiently produce a high-molecular weight polybutylene succinate from 1,4-butanediol and succinic acid or its derivative. SOLUTION: A prepolymer formed by a prepolymerization process is further subjected to polycondensation by using a polymerizer equipped with a mixing blade, in a cylindrical vessel or a vessel having a conical lower part arranged in the vertical direction, comprising plural vertically piled twisted rectangular frame structures which are composed of two horizontal members A and B and two vertical members C and D arranged with keeping a very small gap from the wall surface of the vessel in which the lower horizontal member B is shifted from the upper horizontal member A by a phase of θ2 in the rotation direction or in the opposite direction and a horizontal member B1 below a frame structure positioned above is intersected with a horizontal member A2 above a frame structure adjacent to the frame structure positioned below at an angle of θ1 at the center of rotation and connected.

公开(公告)号：JP2001081165A

公开(公告)日：2001-03-27

申请号：JP26390299

申请日：1999-09-17

Applicant: AGENCY IND SCIENCE TECHN ,  MASUDA TAKASHI ,  MATSUDA AKIO ,  SAKAGUCHI HIROSHI ,  HAMAYA TAKEO

Inventor： MASUDA TAKASHI ,  MATSUDA AKIO ,  SAKAGUCHI HIROSHI ,  HAMAYA TAKEO

IPC: C08G63/183 ,  C08G63/78 ,  C08J11/10 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a new biodegradable plastic by effectively utilizing waste PET bottles, and to provide a method for producing the same plastic. SOLUTION: This method for producing a biodegradable polyester where the content of terephthalic acid component is 5-50 wt.% based on the total content of the terephthalic acid component and succinic acid component comprises the following processes: a waste PET bottle chip-liquefying process for obtaining a liquid product by reacting waste PET bottle chips with 1,4- butanediol at >=140 deg.C in the presence of a transesterification catalyst; and a polyester-producing process for producing a polyester made from terephthalic acid component, succinic acid component and 1,4-butanediol component by adding dimethyl succinate to the above liquid product to react them at 100-140 deg.C while discharging methanol as a by-product and then heating the reaction product at >=190 deg.C to perform further reaction.

公开(公告)号：JP2000318100A

公开(公告)日：2000-11-21

申请号：JP13421099

申请日：1999-05-14

Applicant: AGENCY IND SCIENCE TECHN

Inventor： HIROTSU TOSHIHIRO ,  NAKAYAMA KAZUO ,  MASUDA TAKASHI

IPC: C08J7/04 ,  B32B27/30 ,  C08L67/04 ,  C08L101/00 ,  C08L101/16 ,  C23C14/12 ,  C23C14/22

Abstract: PROBLEM TO BE SOLVED: To effectively prevent a decrease in a mechanical strength based on characteristics such as a hydrophilic property of a biodegradable polymer in a biodegradable plastic molding, by laminating a copolymer thin film made of a fluorine organic compound containing a silicon compound of a predetermined ratio on the polymer. SOLUTION: A copolymer thin film made of a fluorine organic compound containing a silicon compound of a predetermined ratio is laminated on a biodegradable polymer to form a laminate. Then, the thin film is formed by plasma polymerizing a fluorine organic compound containing a silicon compound of a predetermined ratio. The silicon compound is selected from compounds such as a silane or the like, a siloxane or the like, silazane or the like. Further, a mixing ratio of the silicon compound to the fluorine organic compound is set to 0.1 to 0.8. The polymer is selected from a polylactic acid, a polycaprolactone, a poly(3-hydroxybutylate), a polyvinyl alcohol, a starch, a cellulose or the like.

公开(公告)号：JP2000256270A

公开(公告)日：2000-09-19

申请号：JP6260699

申请日：1999-03-10

Applicant: AGENCY IND SCIENCE TECHN

Inventor： SAKAKURA TOSHIYASU ,  MASUDA TAKASHI ,  SAKO TAKESHI

IPC: B01J31/02 ,  C07B61/00 ,  C07C68/04 ,  C07C69/96

Abstract: PROBLEM TO BE SOLVED: To obtain the subject compound industrially advantageously in a high yield by reacting carbon dioxide with an acetal compound in the presence of a metal alkoxide under specific pressure conditions. SOLUTION: Carbon dioxide is reacted with an acetal compound in the presence of a metal alkoxide (preferably tin, titanium, zirconium or a rare earth element) and preferably further a Lewis acid under >=800 atmospheric pressure preferably at 80-200 deg.C for 1-100 hours to give the objective compound. The acetal compound is shown by the formula R1R2C(OR3)2 (R1 and R2 are each H, an alkyl or the like; and R3 is an alkyl, an aralkyl or the like) and benzaldehyde, etc., may be cited as the compound. The metal alkoxide is shown by the formula (R4)nM(OR5)4-n (R4 and R5 are each an alkyl, an aralkyl or the like; (n) is 0-3; and M is a metal atom), etc. A halide can be used as a cocatalyst besides the metal alkoxide.

公开(公告)号：JPH08301814A

公开(公告)日：1996-11-19

申请号：JP13580695

申请日：1995-05-09

Applicant: AGENCY IND SCIENCE TECHN ,  CHIKYU KANKYO SANGYO GIJUTSU

Inventor： MATSUDA AKIO ,  TAKAHASHI IKUO ,  MASUDA TAKASHI ,  KAWAMOTO KENJI

IPC: B01J31/22 ,  C07B61/00 ,  C07C67/36 ,  C07C69/40

Abstract: PURPOSE: To efficiently produce the subject compound useful as a biodegradable lubricant, etc., by performing a reaction in the presence of a catalyst consisting of a complex of cobalt carbonyl with a pyridine base. CONSTITUTION: This compound of the formula (R is an alkyl; R is a divalent aliphatic) is produced by reacting (A) an acrylic acid alkyl ester of CH2 = CHCOOR (e.g. methyl acrylate) with (B) an aliphatic diol of HOR OH (e.g. 2,3-butanediol) in the presence of a catalyst of (C) a complex of carbon monoxide with (D) cobalt carbonyl, and hydrogen under reaction conditions e.g. at 100-110 deg.C under 35-50 atm for 60-150min. Preferably further, an organic solvent (e.g. pentane) working as a poor solvent against the component C is added to the obtained reaction liquid to precipitate the component C, and the component C separated by the precipitation is used again for the reaction.

公开(公告)号：JPH072830A

公开(公告)日：1995-01-06

申请号：JP28928692

申请日：1992-10-03

Applicant: AGENCY IND SCIENCE TECHN ,  CHIKYU KANKYO SANGYO GIJUTSU ,  TOPPAN PRINTING CO LTD ,  DAICEL CHEM

Inventor： TAKAHASHI IKUO ,  KAWAMOTO KENJI ,  MASUDA TAKASHI ,  MATSUDA AKIO ,  SANO YOJI

IPC: B01J31/10 ,  C07B61/00 ,  C07D317/34 ,  C07D319/12

Abstract: PURPOSE:To provide a method for producing 1, 3-dioxolan-4-one and/or diglycolic acid anhydride from inexpensive raw materials in a high yield. CONSTITUTION:A method for producing 1, 3-dioxolan-4-one and/or diglycolic acid anhydride by reacting formaldehyde or a formaldehyde polymer producing the formaldehyde by its depolymerization with carbon monoxide in the presence of a solid acid catalyst is characterized by stopping the reaction when the reaction rate of the formaldehyde is 50-100mol% and when a formaldehyde carbon monoxide copolymer insoluble in the reaction production solution is substantially not produced or the production amount of the formaldehyde carbon monoxide copolymer insoluble in the reaction production solution is

公开(公告)号：JPH03290461A

公开(公告)日：1991-12-20

申请号：JP9281690

申请日：1990-04-06

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MASUDA TAKASHI ,  MATSUDA AKIO ,  MURATA KAZUHISA ,  YAMAZAKI SHINSUKE

IPC: C08L67/04 ,  C08L67/00 ,  C08L77/00 ,  C08L101/16

Abstract: PURPOSE:To obtain a biodegradable plastic composition having utility as a plastic molding material, providing molded articles having biodegradation properties and toughness, by blending a polyglycollide with a specific polymer substance in a molten state. CONSTITUTION:A biodegradable plastic composition comprising a molten mixture consisting of (A) 5-60wt.% polyglycollide which is prepared by reacting carbon monoxide with carbon monoxide preferably in the presence of an acidic catalyst, depolymerizing the prepared polyglycollide with water or a lower alcohol to give glycolic acid (ester), heating and polymerizing the glycolic acid and has >=500, preferably 800-10,000 number-average molecular weight and (B) 95-40wt.% one or more polymer substances selected from poly(3- hydroxybutyric acid), a copolymer of 3-hydroxybutyric acid and 3-hydroxyvaleric acid, polycaprolactone and polyglutamic acid.

公开(公告)号：JPH0377845A

公开(公告)日：1991-04-03

申请号：JP21245789

申请日：1989-08-18

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MURATA KAZUHISA ,  MATSUDA AKIO ,  MASUDA TAKASHI

IPC: B01J31/02 ,  C07B61/00 ,  C07C45/46 ,  C07C49/788 ,  C07C67/14 ,  C07C69/157

Abstract: PURPOSE:To obtain the subject compound as intermediate of a compound for producing highly functional resin or liquid crystalline polymer, etc., in high selectivity by reacting naphthalenes and an acylating agent in the co-presence of quaternary ammonium salt and in the presence of a catalyst. CONSTITUTION:Naphthalenes are reacted with an acylating agent in the presence of a catalyst containing aluminum halide and further in the co-presence of quaternary ammonium salt at from -30 deg.C to 200 deg.C, preferably 0-40 deg.C under atmospheric pressure and inert atmosphere, and in a solvent such as benzene, as necessary, to afford the objective compound. Among the above-mentioned quaternary ammonium salt, preferably 2,6-dimethyl-1-ethyl pyridium bromide, etc., is exemplified and the using amount of said salt is preferably 0.2-0.8 molar ratio to an aluminum halide as a catalyst. Halide of carboxylic acid, etc., is used as the acylating agent.