公开(公告)号：JPS6379052A

公开(公告)日：1988-04-09

申请号：JP22515686

申请日：1986-09-24

Applicant: MITSUBISHI HEAVY IND LTD ,  TOSOH CORP

Inventor： MIKAMI SADAO ,  MIYAMOTO KIICHIRO ,  MIYAMOTO HITOSHI ,  TSURUTA TAKAO ,  KIYOTA TORU ,  AKIMOTO AKIRA ,  MORI TAKASHI

IPC: G01N27/447 ,  B01D57/02 ,  C25B1/00 ,  G01N27/26

Abstract: PURPOSE:To eliminate the generation of a gas of hydrogen, oxygen or the like, by employing a reversible electrode reaction liquid with the base oxidation potential lower than an oxygen generation potential as anode liquid and a reversible electrode reaction liquid with the noble reduction potential higher than a hydrogen generation potential as cathode liquid to eliminate pollution of an emigration liquid. CONSTITUTION:An anode liquid 12' and a cathode liquid 14' use ammonium cobalt chloride or the like, a reversible reaction system in an aqueous solution not involving H and OH . An anode diaphragm 7' uses, for example, an anion selectively permeating ion exchange film in which quaternary ammonium group is supported on polytetrafluoroethylene. A cathode diaphragm 8' uses, for example, an cation selectively permeating ion exchange film having carboxylic acid or the like supported on polytetrafluoroethylene with the cation transference number lowered to 0.7-0.9. An electrophoretic processing is performed using such kinds of liquids and diaphragms eliminates the generation of oxygen and hydrogen from an anode 5' and a cathode 6' thereby preventing the pollution of a migration liquid.

公开(公告)号：JPS6379050A

公开(公告)日：1988-04-09

申请号：JP22515486

申请日：1986-09-24

Applicant: MITSUBISHI HEAVY IND LTD ,  TOSOH CORP

Inventor： MIKAMI SADAO ,  MIYAMOTO KIICHIRO ,  MIYAMOTO HITOSHI ,  TSURUTA TAKAO ,  KIYOTA TORU ,  AKIMOTO AKIRA ,  MORI TAKASHI

IPC: G01N27/447 ,  G01N27/26

Abstract: PURPOSE:To prevent the generation of a gas of hydrogen, oxygen or the like while eliminating the pollution of an electrophoresis liquid, by providing metal with a base potential lower than an oxygen generation potential for an anode and a reversible electrode with a noble reducing potential higher than hydrogen potential for a cathode. CONSTITUTION:When metal Fe with a base potential lower than an oxygen generation potential is used as anode 5', no oxygen is generated as current flows in Fe Fe +2e . An cathode employs AgCl as reducing type electrode with the generation of no hydrogen. In this case, current flows due to the reac tion of AgCl+e Ag+Cl and no hydrogen is generated. In an anode dia phragm 7', because of an anion exchange membrane, Fe , Zn and the like generated from the anode 5' are blocked and an anion component such as CH3 COO and Cl of a migration chamber 2 enters an anode chamber 3. In an cathode diaphragm 8', ion components such as K and TEA (triethanol amine) in a migration liquid is allowed to permeate and finally, electrode ion dissolved is blocked form permeating into the migration chamber 2 by a selectively ion transmitting membrane thereby eliminating pollution of the migration liquid.

公开(公告)号：JPH05188581A

公开(公告)日：1993-07-30

申请号：JP16249591

申请日：1991-06-07

Applicant: TOSOH CORP

Inventor： YAMAMOTO TAKASHI ,  SUZUKI SHIGE ,  SHIBATA KATSUYA ,  KIYOTA TORU

IPC: C08F8/04 ,  C07B31/00 ,  C08F16/38 ,  C08L29/14 ,  G03F1/62 ,  H01L21/027

Abstract: PURPOSE:To obtain the excellent durability not only to (g) line and (h) line of a near IR region but to (i) line as well by executing the reduction treatment of a polyvinyl acetal resin which is heretofore used for the pellicle film. CONSTITUTION:This pellicle film consists of the resin obtd. by reducing the polyvinyl acetal resin expressed by formula. In the formula, R is 1 to 3C straight chain or branched alkyl group; the content of a vinyl acetate y/(x+y+z) is =0.6. Such polyvinyl acetal resin can be obtd. by the condensation reaction by known techniques of polyvinyl alcohol and aldehydes, such as acetoaldehyde, propion aldehyde, n-butyl aldehyde and sec-butylaldehyde. Then, the coloration and deterioration when the pellicle film is irradiated with the (i) line generated heretofore in the conventional pellicle films are suppressed.

公开(公告)号：JPH049850A

公开(公告)日：1992-01-14

申请号：JP11014090

申请日：1990-04-27

Applicant: TOSOH CORP

Inventor： SATO SHINJI ,  SEKIMOTO KENICHI ,  SHIBATA KATSUYA ,  KIYOTA TORU

IPC: G03F1/40 ,  G03F1/62

Abstract: PURPOSE:To prevent the reflection of light and to obtain good productivity by forming an antireflection layer consisting of a specific copolymer on one surface of a transparent thin film consisting of polyvinyl acetal. CONSTITUTION:The antireflection layer consisting of the copolymer of the fluorine-contg. alkyl (meth)acrylate expressed by formula I and the hydroxyalkyl (meth)acrylate which is expressed by formula II and has plural OH groups at the terminal or side chain is formed on at least one surface of the trnasparent thin film consisting of the polyvinyl acetal. In the formula I, R denotes H or methyl group; R denotes the group expressed by (CH2)m(CF2)nF, where m, n respectively denote m=1 to 2, n=3 to 14 integers. In the formula II, R denotes H or methyl group; R denotes an alkyl group of a 2 to 4C range having the OH groups at the terminal or side chain. The antireflection layer maintains a low refractive index in this way and the exposing time is shortened. The production efficiency is thus improved.

公开(公告)号：JPH03157410A

公开(公告)日：1991-07-05

申请号：JP26405589

申请日：1989-10-12

Applicant: TOSOH CORP

Inventor： TAKAHASHI YOSUKE ,  OSHIMA KENSHO ,  SEKIMOTO KENICHI ,  KIYOTA TORU

IPC: G02B1/04 ,  C08F20/32 ,  C08F22/36 ,  C08F220/10 ,  C08F220/12 ,  C08F220/32 ,  C08F222/40 ,  C08G59/20 ,  C08G59/32 ,  C08G65/22 ,  G11B7/24 ,  G11B7/253

Abstract: PURPOSE:To obtain the title polymer suitable as a material such as optical lens, digital audio disc, etc., having transparency and strength of characteristic methacrylic resin, high glass transition temperature and low water absorption ratio, comprising a specific structure. CONSTITUTION:The objective polymer shown by formula I (R and R' are H or methyl; R1 is 1-4C chain alkyl; A is constituent unit derived from group copolymerizable with acrylic ester; l is 0.04-1; m is 0-0.96; n is 0-0.5, with the proviso that m+n+l=1 and when m is ]decane with (meth)acryloylchoride or copolymerizing an acrylic monomer shown by formula III with a monomer to derive a unit A such as unit shown by formula IV.

公开(公告)号：JPH02131125A

公开(公告)日：1990-05-18

申请号：JP28135988

申请日：1988-11-09

Applicant: ASAHI GLASS CO LTD ,  TOSOH CORP

Inventor： ISHIBASHI NOBUHIKO ,  KIYOTA TORU ,  SUGAYA YOSHIO

IPC: B01D61/46

Abstract: PURPOSE:To convert neutral salt into acid and alkali with high current efficiency by utilizing a water splitter in which both the anion exchange membrane of an anode side and the cation exchange membrane of a cathode side are mutually unjointed and closely opposed and electro-dialysing a salt soln. CONSTITUTION:A water splitter is constituted by mutually unjointing both the anion exchange membrane of an anode side and the cation exchange membrane of a cathode side and closely opposing both membranes. At least one piece of water splitter is utilized and a salt soln. is electro-dialyzed to convert this salt soln. into hydroxide and acid. Concretely acid and alkali can be produced by an electrodialysis cell in which a set of splitter S with the cation exchange membrane C and the anion exchange membrane A closely opposed with each other is arranged between the anode and the cathode. Further an ion permeable semipermeable membrane free from an ion exchange group can be interposed between the anion exchange membrane and the cation exchange membrane.

公开(公告)号：JPH02115217A

公开(公告)日：1990-04-27

申请号：JP26620188

申请日：1988-10-24

Applicant: TOSOH CORP

Inventor： SEKIMOTO KENICHI ,  OSHIMA KENSHO ,  TAKAHASHI YOSUKE ,  KIYOTA TORU

IPC: G11B11/10 ,  C08G59/00 ,  C08G59/20 ,  C08G59/22 ,  G11B7/24 ,  G11B7/253 ,  G11B11/105

Abstract: PURPOSE:To obtain a resin composition for an optical material for optical disc bases excellent in transparency, heat resistance, humidity resistance and mechanical strengths and being optically homogeneous and lowly birefringent by curing an epoxy resin based on a compound having a specified polycyclic structure. CONSTITUTION:A resin composition for an optical material is produced by curing an epoxy resin based on a compound having a polycyclic structure of the formula. This resin composition is featured in that it is excellent in transparency, heat resistance, humidity resistance and mechanical strengths and is optically homogeneous and lowly birefringent. Therefore, it is very excellent as a resin for an optical material for optical discs. The above compound can be obtained by epoxidizing dicyclopentadiene with an oxidizing agent such as a peroxy acid (e.g., peroxyacetic acid) or a hydroperoxide.

公开(公告)号：JPH02113019A

公开(公告)日：1990-04-25

申请号：JP26411588

申请日：1988-10-21

Applicant: TOSOH CORP

Inventor： SEKIMOTO KENICHI ,  OSHIMA KENSHO ,  TAKAHASHI YOSUKE ,  KIYOTA TORU

IPC: G11B11/10 ,  C08F220/30 ,  C08G59/00 ,  C08G59/20 ,  C08G59/32 ,  G11B7/24 ,  G11B7/253 ,  G11B11/105

Abstract: PURPOSE:To obtain the subject optically homogeneous composition, consisting of a resin prepared by polymerizing a specific compound and photo-setting the resultant polymer, etc., excellent in transparency, heat, moisture resistance and mechanical strength with a low birefringence and suitable as a resin for optical materials used in substrates of optical disks. CONSTITUTION:The objective composition consisting of a resin obtained by polymerizing a compound (e.g., 2,3-epoxyacryloyloxydicyclo[2.2.1]heptane) expressed by the formula (R1 is H or methyl; n is 0 or 1) and then photo-setting or thermosetting the resultant polymer.

公开(公告)号：JPH01294884A

公开(公告)日：1989-11-28

申请号：JP12494988

申请日：1988-05-24

Applicant: TOSOH CORP

Inventor： KIYOTA TORU ,  HYODO MASAYUKI

IPC: C25B9/10

Abstract: PURPOSE:To develop the title ion-exchange membrane-electrode bonded body having excellent durability even under severe electrolyte conditions at high temp. or in strongly acidic and basic mediums by bonding a specified metal or oxide to at least one side of a specified fluorine-based anion-exchange membrane. CONSTITUTION:The platinum-group metals such as Pt, Rh, Ru, Pd, Ir, and Os, the iron-family metals such as Fe and Ni, the metals such as Mn, Cu, Ag, Au, and Pb and their oxide, or carbon as the electrode materials having excellent corrosion resistance and catalytic activity are bonded to at least one side of the fluorine-based anion-exchange membrane consisting of a copolymer having the repeating unit shown by formula I to produce the fluorine-based anion- exchange membrane-electrode bonded body to be used in such electrochemical processes as in a sodium chloride electrolyzer, various fuel cells, a water electrolyzer, A fluorine-based anion-exchange membrane-electrode bonded body having excellent durability and capable of being used even under severe electrolyte conditions at high temp. or in strongly acidic and basic mediums is obtained.

公开(公告)号：JPH01293339A

公开(公告)日：1989-11-27

申请号：JP12392988

申请日：1988-05-23

Applicant: TOSOH CORP

Inventor： TODOKO MASAAKI ,  KIYOTA TORU ,  YAMAMOTO TAKASHI ,  NAGAOKA TSUNEKO

IPC: G03C1/00 ,  G03F7/038 ,  G03F7/20

Abstract: PURPOSE:To improve sensitivity, definition and heat resistance by adding a photo-acid initiation contg. a sulfonate group to a specific polymer and a crosslinking agent contg. a specific group. thereby forming the compsn. CONSTITUTION:This compsn. is prepd. by adding the photo-acid initiator contg. the sulfonate group into the polymer contg. the formula I and the crosslinking agent contg. the group expressed by the formula II. In the formula I, R1 denotes hydrogen or alkyl group of 1-5C. In the formula, R2 denotes hydrogen, methyl group or alkyl group of 1-5C. The photo-acid initiator contg. the sulfonate group is thus combined with the polymer contg. hydroxystyrene and the crosslinking agent. The definition, sensitivity and heat resistance are thereby improved.