公开(公告)号：JP2000256459A

公开(公告)日：2000-09-19

申请号：JP6481599

申请日：1999-03-11

Applicant: AGENCY IND SCIENCE TECHN ,  JAPAN CHEMICAL INNOVATION INST

Inventor： YAMAKAWA YOSHITAKA ,  UEDA MITSURU ,  ASAI MICHIHIKO ,  TAKEUCHI KAZUHIKO

IPC: C07C237/20 ,  C08G69/08

Abstract: PROBLEM TO BE SOLVED: To obtain a polymer having a high regularity in branch structure and a relatively narrow molecular weight distribution which avoiding the lowering of reactivity due to a steric hindrance by condensing an AB2 type monomer having highly flexible methylene groups and a relatively large molecular size in stages. SOLUTION: The multi-branched polymer essentially consisting of repeating units represented by formula I and having a number-average molecular weight of at least 500 is obtained by condensing an AB2 type monomer represented by formula II (wherein n is 1-20; and X is an optional acidic compound to form an adduct) in stages. Namely, a monomer of formula II is dissolved in an organic solvent and directly polycondensed at ordinary temperature or under heating in the presence of a condensing agent and, optionally, an acid acceptor. It is also possible to add a compound having at least one carboxyl group as a core in the above reaction. It is also possible to bond a compound optionally having one amino group alone to a terminal of the polymer. The formed multi- branched polymer can be precipitated and isolated by pouring the reaction solution into a poor solvent.

公开(公告)号：JP2000239314A

公开(公告)日：2000-09-05

申请号：JP4222899

申请日：1999-02-19

Applicant: AGENCY IND SCIENCE TECHN ,  JAPAN CHEMICAL INNOVATION INST

Inventor： MURATA MASAHIDE ,  OZAKI HIROYUKI ,  HAGIWARA HIDEAKI ,  ASAI MICHIHIKO ,  SUZUKI YASUZO ,  MIYAZAWA SATORU ,  TSUCHIHARA KENJI ,  FUKUI YOSHIFUMI ,  KAWABE MASANAO ,  KASE TOSHIO ,  SOGA KAZUO ,  JIN JIJU

IPC: C08F4/642 ,  C08F4/659 ,  C08F4/6592 ,  C08F10/00

Abstract: PROBLEM TO BE SOLVED: To prepare a stable catalyst for polymerizing olefins, comprising a titanocene catalyst system, easily to be handled, showing high reactivity in polymerizing olefins and useful for polymerizing ethylene or the like by including a specific metal complex and aluminoxane. SOLUTION: This catalyst is prepared by including (A) a metal complex of the formula (wherein, Cp is cyclopentadienyl; X and Y are each a halogen; J and L are each a 1-8C alkyl or a halogen) and (B) an aluminoxane such as methylaluminoxane preferably in an amount of 30-100 g ingredient B based on 1 g atom titanium in the ingredient A. The ingredient A is obtained e.g. by reacting bis(cyclopentadienyl)titanium dichloride with ethylaluminum dichloride.

公开(公告)号：JP2000154210A

公开(公告)日：2000-06-06

申请号：JP23620699

申请日：1999-08-23

Applicant: AGENCY IND SCIENCE TECHN ,  JAPAN CHEMICAL INNOVATION INST

Inventor： SOGA KAZUO ,  ASAI MICHIHIKO ,  SUZUKI YASUZO ,  MIYAZAWA SATORU ,  TSUCHIHARA KENJI ,  MURATA MASAHIDE ,  OZAKI HIROYUKI ,  KAWABE MASANAO ,  FUKUI YOSHIFUMI ,  JIN JIJU ,  HAGIWARA HIDEAKI ,  KASE TOSHIO

IPC: C08F36/04 ,  C08F4/642 ,  C08F4/6592 ,  C08F36/08 ,  C08F297/06

Abstract: PROBLEM TO BE SOLVED: To obtain a catalyst for the stereospecific living polymerization of a conjugated diene, which catalyst comprises a group IV transition metal compound in which an organic group having a specified number of carbon atoms is directly bonded to a cyclopentadiene ring structure, an organoaluminumoxy compound, and a promoter selected from among an ionic compound, a Lewis acid compound, and an organometallic compound. SOLUTION: This catalyst comprises a group IV transition metal compound, such as methylcyclopentadienyltitanium trichloride, which has a cyclopentadiene ring structure and in which one of 1-30 organic groups optionally containing Si, Sn, or Ge is directly bonded to the cyclopentadiene ring structure; an organoaluminumoxy compound; and a promoter. The promoter is selected from among an ionic compound, such as a triphenylcarbonium cation, capable of reacting with the group IV transition metal compound to form a cationic transition metal compound, a Lewis acid compound such as tris(pentafluorophenyl) boron, and an organometallic compound containing a group I, II, or III metal, such as butyllithium.

公开(公告)号：JP2000086719A

公开(公告)日：2000-03-28

申请号：JP28051998

申请日：1998-09-15

Applicant: AGENCY IND SCIENCE TECHN ,  JAPAN CHEMICAL INNOVATION INST

Inventor： SOGA KAZUO ,  ASAI MICHIHIKO ,  SUZUKI YASUZO ,  MIYAZAWA SATORU ,  TSUCHIHARA KENJI ,  MURATA MASAHIDE ,  OZAKI HIROYUKI ,  KAWABE MASANAO ,  FUKUI YOSHIFUMI ,  JIN JIJU ,  HAGIWARA HIDEAKI ,  KASE TOSHIO

IPC: C08F4/64 ,  C08F4/6592 ,  C08F8/00 ,  C08F36/00

Abstract: PROBLEM TO BE SOLVED: To obtain a butadiene-based polymer having a high 1,4-cis content, a narrow molecular weight distribution and a high terminal modification ratio and to provide a method for efficiently producing the polymer. SOLUTION: This terminal modified butadiene-based polymer has >=50% cis-bonded unit in a butadiene unit, 10,000-10,000,000 number-average molecular weight(Mn), the ratio (Mw/Mn) of weight-average molecular weight(Mw)/number- average molecular weight(Mw/) of =10% molecular chain containing a functional group in the molecular end in the whole molecular chains. A method for producing the terminal modified butadiene-based polymer comprises polymerizing a conjugated diene monomer in the presence of a catalyst obtained by bringing a cyclopentadienyl skeleton-containing transition metal compound of the group IV of the periodic table into contact with a cocatalyst under conditions satisfying the following equations, -100

公开(公告)号：JPH1180226A

公开(公告)日：1999-03-26

申请号：JP24431297

申请日：1997-09-09

Applicant: AGENCY IND SCIENCE TECHN ,  KAGAKU GIJUTSU SENRIYAKU SUISH

Inventor： FUKUI YOSHIFUMI ,  MURATA MASAHIDE ,  SOGA KAZUO ,  ASAI MICHIHIKO ,  SUZUKI YASUZO ,  MIYAZAWA SATORU ,  TSUCHIHARA KENJI ,  OZAKI HIROYUKI ,  KAWABE MASANAO ,  KISHI NAOYA

IPC: C08F4/622 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/68 ,  C08F8/00 ,  C08F10/00 ,  C08F36/20 ,  C08F210/06

Abstract: PROBLEM TO BE SOLVED: To obtain a catalyst which enables the production of a telechelic olefin polymer by subjecting a living polymn. catalyst for an olefin and a compd. having carbon-carbon double bonds in the molecule to successive polymn. SOLUTION: A catalyst for producing a living polymer is obtd. by bringing 1 mol of a catalyst having a capability for the living coordination polymn. of ethylene and/or a 3-8C α-olefin and pref. comprising a vanadium compd. of the formula (wherein R to R are each H or a 1-8C hydrocarbon group provided that at least one of them is H and that the case when all of them are simultaneously H is excluded) and an organoaluminum compd. of the formula: Rn AlX3-n (wherein R is 1-18C alkyl or aryl: X is halogen or H: and 1

公开(公告)号：JPH06145245A

公开(公告)日：1994-05-24

申请号：JP32254292

申请日：1992-11-06

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ITO SHOJI ,  WATANABE YASUSHI ,  ASAI MICHIHIKO

IPC: C08F20/58 ,  C08F20/52

Abstract: PURPOSE:To obtain the subject polymer compound useful as light screening material, temperature sensor, etc., having a given intrinsic viscosity efficiently and in high yield by radically polymerizing a specific vinyl compound. CONSTITUTION:N-2-(1,3-Dioxolan-2-yl)ethylacrylamide of formula I is radically polymerized to give the objective polymer compound comprising a repeating unit of formula II, having a molecular weight corresponding to 0.01-6.0 intrinsic viscosity [eta]in an aqueous solution at 27 deg.C. The compound of formula I is a new substance and is obtained by reacting acrylic acid with 2-(2- aminoethyl)-1,3-dioxolan.

公开(公告)号：JPH06145166A

公开(公告)日：1994-05-24

申请号：JP32254192

申请日：1992-11-06

Applicant: AGENCY IND SCIENCE TECHN

Inventor： ITO SHOJI ,  WATANABE YASUSHI ,  ASAI MICHIHIKO

IPC: C07D317/28 ,  C08F20/52 ,  C08F120/58

Abstract: PURPOSE:To obtain a new compound useful as a raw material monomer for heat-sensitive polymer compound such as light screening material, temperature sensor, adsorbent, toy, interior, printing agent, display, separating film or mechanochemical material. CONSTITUTION:N-2-(1,3-Dioxolan-2-yl)ethylacrylamide of formula I. The compound of formula I is obtained by reacting acrylic acid chloride of formula II with 2-(2-aminoethyl)-1,3-dioxolan of formula III at and triethylamine 0-10 deg.C.

公开(公告)号：JPH03261691A

公开(公告)日：1991-11-21

申请号：JP5816590

申请日：1990-03-12

Applicant: AGENCY IND SCIENCE TECHN ,  MITSUBISHI HEAVY IND LTD

Inventor： ASAI MICHIHIKO ,  ATAKA MITSUO ,  TAKAOKI MUNEO ,  KAMIMURA KAZUHIDE

IPC: C30B7/04 ,  C30B29/58 ,  C30B30/08

Abstract: PURPOSE:To stably form a concentration gradient of a solution in a pipe by connecting one end of the pipe through a dialytic membrane to a low-concentration solution container and the other end through the dialytic membrane to a high-concentration solution container and simultaneously regulating the solution concentrations in the respective containers according to a specific method. CONSTITUTION:One end of a pipe 2 for preparing a concentration gradient is connected through a low-concentration solution container 4 and the other end thereof is connected through the dialytic membrane 3 to a high-concentration solution container 5. A solute is then moved from the high-concentration solution container 5 to the low-concentration solution container 4 according to the law of increase of entropy while being diffused to prepare the concentration gradient in the pipe 2. Furthermore, the solution is then transferred from the containers 4 and 5 to an inlet chamber 11 of a solution concentration regulating container 10 having a reverse osmosis membrane 12 with pumps 8 and 9. Pure water passing through the reverse osmosis membrane 12 is returned from an outlet chamber 13 into the low- concentration solution container 4 to keep the solute in the container 4 at a specified concentration or below. The solution with the increased solute concentration in the inlet chamber 11 is subsequently returned to the high-concentration solution container 5 to keep the solute in the container 5 at a specified concentration or above. Thereby, the concentration gradient in the pipe 2 is kept in a definite state.

公开(公告)号：JPH03205548A

公开(公告)日：1991-09-09

申请号：JP79290

申请日：1990-01-06

Applicant: AGENCY IND SCIENCE TECHN

Inventor： MIZUTANI FUMIO ,  IIJIMA SEIICHIRO ,  YABUKI SOICHI ,  ASAI MICHIHIKO

IPC: G01N27/416

Abstract: PURPOSE:To make rapid and simple measurement with a high sensitivity by measuring catecholamines by an electrochemical method having simplicity under the conditions under which an oxidizing enzyme and the substrate org. matter of this enzyme exist in a sample chamber. CONSTITUTION:The oxidizing enzyme and the substrate org. matter of this enzyme are made to exist in the sample chamber at the time of measuring the catecholamines in a sample soln. contg. catecholamines of biotissue extracts, etc., such as dopamine, adrenalin, and noradrenalin. The electrode response with the catecholamines is then chemically amplified and the electrode response with ascorbic acids, etc., which disturb the measurement are not chemically amplified. The catecholamines are rapidly and easily measured with the high sensitivity by the electrochemical method which consists in impressing the potential necessary and sufficient for the electrolytic oxidation of the catecholamines to the electrode in this state and measuring the concn. of the catecholamines from the electrode current and has the simplicity.

公开(公告)号：JPS6297687A

公开(公告)日：1987-05-07

申请号：JP23740585

申请日：1985-10-25

Applicant: AGENCY IND SCIENCE TECHN ,  HITACHI LTD

Inventor： ASAI MICHIHIKO ,  SAKAI TSUKASA ,  TSUDA KEISHIRO ,  TAKEMOTO KAZUNARI ,  KITO MAKOTO ,  KUROIWA MINORU ,  KOMATSU TAKASHI

IPC: C02F1/00 ,  C02F1/32 ,  C02F1/42 ,  C02F1/44 ,  C02F9/00 ,  C08J7/00

Abstract: PURPOSE:To reduce the elution of an org. substance, by applying plasma treatment to the inside surface of each of the piping between apparatuses and the piping up to an area using ultrapure water to form a modified layer to said inside surface. CONSTITUTION:Primary pure water Wa supplied is subjected to sterilization treatment in an ultraviolet sterilization apparatus 1 and introduced into an ion exchange apparatus 2 through piping 4A to remove the dissolved ion in the pure water Wa. The pure water Wa after the removal of the ion is introduced into an ultrafiltration apparatus 3 through piping 4B and fine particles in the pure water Wa are removed to obtain ultrapure water Wb which is, in turn, supplied to a use area through piping 4C. Plasma treatment is applied to the inner surface of the piping main body 5 of each of the pipings 4A-4C by Ar-gas to form a modified layer 6. By this method, ultrapure water can be obtained.