公开(公告)号：JP2000007774A

公开(公告)日：2000-01-11

申请号：JP17355298

申请日：1998-06-19

Applicant: MITSUI CHEMICALS INC

Inventor： IKEDA YOSHI ,  GOTO KENICHI ,  WATANABE KATSUJI ,  KUMAMOTO YUKIHIRO ,  TAMAI MASAJI

IPC: C08G63/06 ,  C08G63/78 ,  C08G63/82 ,  C08G63/90

Abstract: PROBLEM TO BE SOLVED: To obtain a high-molecular-weight polyhydroxycarboxylic acid while ensuring simple removal of a catalyst by obtaining an oligomer used for polycondensation in the presence of a haloiminium salt through dehydrative condensation of hydroxycarboxylic acids in the presence of a catalyst. SOLUTION: The hydroxycarboxylic acid includes glycolic acid, lactic acid, 3-hydroxybutyric acid or 4-hydroxybutyric acid, and the number of repetition units of the oligomer is at 40 to 400. The catalyst for oligomerization includes metallic tin, and/or a divalent tin compound and is selected from metallic tin, stannous oxide, stannous chloride, tin sulfate and stannous hydroxide. The oligomerization is carried out in the presence of an azeotropic dehydrating solvent made of one or more solvents selected from benzene, toluene, xylene, chlorobenzene and 1,2-dichlorethane. The resultant polyhydroxycarboxylic acid has a weight average molecular weight of 100,000 or over, and the catalyst and side products can be removed by washing with water, ethyl alcohol or the like.

公开(公告)号：JPH1110664A

公开(公告)日：1999-01-19

申请号：JP16284197

申请日：1997-06-19

Applicant: MITSUI CHEMICALS INC

Inventor： KIJIMA SHIGEKI ,  TAGAWA KIMITERU ,  OTSUBO EIJI ,  KUMAMOTO YUKIHIRO

IPC: C08J5/18 ,  B29C41/30 ,  B29K77/00 ,  B29L9/00 ,  B32B27/34

Abstract: PROBLEM TO BE SOLVED: To obtain a thin and uniform thermoplastic polyimide film easy to handle by directly casting and coating a heat resistant release film with thermoplastic polyimide, and further executing removal of solvent by drying. SOLUTION: Thermoplastic polyimide is obtained by polycondensing diamine such as 1,3-bis(3-aminophenoxy)benzene and 3,3',4,4'diphenylether tetracarboxylic dianhydride. As heat resistant release film, a polyimide film is uniformly and continuously directly cast and coated with thermoplastic polyimide varnish by using a knife coater, solvent-removed and imide-derived completely in a nitrogen atmosphere drying furnace. As a result, the thermoplastic polyimide film 11 with release film made of release film 12 and non-thermoplastic polyimide film 13 is obtained. Since the film 11 is thin and uniform and the film 12 has a high strength, it is easily handled.

公开(公告)号：JP2013231202A

公开(公告)日：2013-11-14

申请号：JP2013171284

申请日：2013-08-21

Applicant: Mitsui Chemicals Inc ,  三井化学株式会社

Inventor： SHIBUYA ATSUSHI ,  KUMAMOTO YUKIHIRO ,  WADA MASARU ,  ABE SHOTA ,  TERADO YUJI ,  MITA SHIGEYOSHI ,  MATOISHI KAORI

IPC: C08L101/02 ,  C08K5/3492 ,  C08K5/524 ,  C08L45/00 ,  C08L65/00 ,  G11B7/135

CPC classification number: C08K5/34926 ,  C08L23/0823 ,  G11B7/1359 ,  G11B7/1372 ,  C08L23/08

Abstract: PROBLEM TO BE SOLVED: To provide a resin composition capable of obtaining a molded article excellent in optical characteristics such as light resistance, a molded article such as optical component obtained by molding the resin composition, and an optical pickup device using the optical component.SOLUTION: A resin composition includes: 100 pts.mass of a polymer having an alicyclic structure in at least a part of a repeating unit; and 0.05-5 pts.mass of a hindered amine compound wherein a ratio of a carbon atom inside the molecular structure is 67-80 wt.% and a molecular weight is 500-3,500. A novel piperidine derivative having a piperidylaminotriazine skeleton; a molded article such as an optical component produced by molding the resin composition; and an optical pickup device using the optical component are also provided.

Abstract translation: 要解决的问题：提供一种能够获得耐光性等光学特性优异的成型体的树脂组合物，通过树脂组合物成型获得的光学部件等成型品，以及使用该光学部件的光学拾取装置。 ：树脂组合物包括：在至少部分重复单元中具有100重量份的具有脂环结构的聚合物; 和0.05-5重量份的受阻胺化合物，其中分子结构内的碳原子数比为67-80重量％，分子量为500-3,500。 具有哌啶基氨基三嗪骨架的新型哌啶衍生物; 诸如通过模塑树脂组合物制备的光学部件的模制品; 并且还提供使用该光学部件的光学拾取装置。

公开(公告)号：JP2003206267A

公开(公告)日：2003-07-22

申请号：JP2002003254

申请日：2002-01-10

Applicant: MITSUI CHEMICALS INC

Inventor： KUMAMOTO YUKIHIRO ,  YOSHITOMI HIDETAKE ,  TAKAOKA MASAZUMI ,  MIZUTA HIDEKI ,  MATSUZAKI YORIAKI

IPC: C07C213/08 ,  C07C213/10 ,  C07C215/80

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing 4,6-diaminoresorcin dihydrochloride, capable of effectively producing the 4,6-diaminoresorcin dihydrochloride from a solution containing the 4,6-diaminoresorcin dihydrochlorde by reducing the amount of a discharged waste fluid to the least possible extent. SOLUTION: This method for producing the 4,6-diaminoresorcin dihydrochloride includes (1) a first process for mixing the aqueous solution containing the 4,6-diaminoresorcin dihydrochloride with hydrochloric acid to form a hydrochloric acid aqueous solution containing the 4,6-diaminoresorcin dihydrochloride, (2) a second process for concentrating the hydrochloric acid aqueous solution containing the 4,6-diaminoresorcin dihydrochloride to form a concentrate in which the 4,6-diaminoresorcin dihydrochloride is deposited, subjecting the concentrate to solid-liquid separation, and recovering the deposited 4,6-diaminoresorcin dihydrochloride from the concentrate together with a filtrate, and (3) a third process for reusing the filtrate which is recovered in the second process, or the hydrochloric acid which is recovered from the filtrate, as the hydrochloric acid which is mixed with a new aqueous solution containing the 4,6-diaminoresorcin dihydrochloride in the first process. COPYRIGHT: (C)2003,JPO

公开(公告)号：JP2002128746A

公开(公告)日：2002-05-09

申请号：JP2000317369

申请日：2000-10-18

Applicant: MITSUI CHEMICALS INC

Inventor： YOSHITOMI HIDETAKE ,  KUMAMOTO YUKIHIRO ,  TAKAOKA MASAZUMI ,  MIZUTA HIDEKI ,  MATSUZAKI YORIAKI

IPC: C07C213/02 ,  C07B61/00 ,  C07C215/80

Abstract: PROBLEM TO BE SOLVED: To provide a method for improving reaction rate of hydrogenation and unifying completion time of the reaction when obtaining 4,6-diaminoresorcin dihydrochloride by hydrogenating 4,6-dinitroresorcin. SOLUTION: This method for producing the 4,6-diaminoresorcin is characterized by adding a phase transfer catalyst when hydrogenating the 4,6- dinitroresorcin in the presence of a metal catalyst in aqueous hydrochloric acid.

公开(公告)号：JP2001122843A

公开(公告)日：2001-05-08

申请号：JP29946599

申请日：1999-10-21

Applicant: MITSUI CHEMICALS INC

Inventor： KUMAMOTO YUKIHIRO ,  MIZUTA HIDEKI ,  KUSUMOTO MASAHIKO

IPC: C07C303/22 ,  C07C309/08

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a new intermediate useful for producing 4,6-diaminoresorcinol. SOLUTION: This method for producing 2-sulfo-4,6-dinitroresorcinol comprises nitrating 2,4,6-trisulforesorcinol in a sulfuric acid or fuming sulfuric acid solvent.

公开(公告)号：JP2001114748A

公开(公告)日：2001-04-24

申请号：JP28905599

申请日：1999-10-12

Applicant: MITSUI CHEMICALS INC

Inventor： KUMAMOTO YUKIHIRO ,  MIZUTA HIDEKI ,  KUSUMOTO MASAHIKO

IPC: C07C303/06 ,  C07C309/42

Abstract: PROBLEM TO BE SOLVED: To provide a method for industrially advantageously producing resorcinol 2,4,6-trisulfonic acid. SOLUTION: This method for producing resorcinol 2,4,6-trisulfonic acid comprises bringing resorcinol into contact with a sulfonating agent and using fuming sulfuric acid as the sulfonating agent. The method depends on fuming sulfuric acid containing >=3 mol free SO3 based on resorcinol.

公开(公告)号：JP2000026589A

公开(公告)日：2000-01-25

申请号：JP19318798

申请日：1998-07-08

Applicant: MITSUI CHEMICALS INC

Inventor： GOTO KENICHI ,  KUMAMOTO YUKIHIRO ,  WATANABE KATSUJI ,  TAMAI MASAJI

IPC: C08G63/06 ,  C08G63/78 ,  C08G63/90 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a high-quality polyhydroxycarboxylic acid in a process enabling mass production. SOLUTION: This method for producing a polyhydroxycarboxylic acid comprises adding isopropyl alcohol in an amount of >=1.5 times that of a reactional solvent to a solution of the polyhydroxycarboxylic acid prepared by reacting a hydroxycarboxylic acid and/or its oligomer with a haloiminium salt in the organic solvent while keeping the isopropyl alcohol at a temperature of 50 deg.C or above and the boiling point of the isopropyl alcohol or below, cooling the resultant solution at

公开(公告)号：JP2000026588A

公开(公告)日：2000-01-25

申请号：JP19318698

申请日：1998-07-08

Applicant: MITSUI CHEMICALS INC

Inventor： GOTO KENICHI ,  KUMAMOTO YUKIHIRO ,  WATANABE KATSUJI ,  TAMAI MASAJI

IPC: C08G63/06 ,  C08G63/78 ,  C08G63/90 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a high-quality polyhydroxycarboxylic acid in a process enabling mass production. SOLUTION: This method for producing a polyhydroxycarboxylic acid comprises feeding a solution of the polyhydroxycarboxylic acid prepared by reacting a hydroxycarboxylic acid and/or its oligomer with a haloiminium salt in an organic solvent together with isopropyl alcohol in a weight of 0.5-1.5 times that of the organic solvent into an apparatus having a kneading mechanism, mixing the solution with the isopropyl alcohol, providing a solid in a wet state with 12.5-18.0% weight fraction of the polymer and then washing the resultant solid with isopropyl alcohol.