专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH1017421A METHOD FOR PREVENTING ADHESION OF SLIME 失效
公开(公告)号：JPH1017421A
公开(公告)日：1998-01-20
申请号：JP19575996
申请日：1996-07-05
申请人： MITSUBISHI GAS CHEMICAL CO , KATAYAMA CHEMICAL WORKS CO
发明人： GOTO YUKIFUMI , WAKAO YOSHIHARU , ANDO MASAHIRO , TABUCHI TAKUO
IPC分类号： C02F1/50 , A01N59/00 , C02F1/46
摘要： PROBLEM TO BE SOLVED: To prevent the adhesion of slime in a water system such as a seawater system for cooling caused mainly by microorganisms by using a small amount of hydrogen peroxide and activating the peroxide by the application of a DC voltage. SOLUTION: Adhesion of slime caused by aerobic microorganisms is prevented by placing a cathode on the water-contacting face such as the inner wall and piping of a water facility and an anode at an arbitrary position enabling the contact with the water and applying a DC voltage between the cathode and the anode in the presence of a small amount of hydrogen peroxide. The hydrogen peroxide may be added to the system or generated in situ. The addition or generation amount of hydrogen peroxide is preferably about 0.01-2mg/L, especially 0.1-1.8mg/L. A durable electrode material such as carbon steel, lead alloy or high-silicon steel is preferable as the electrically conductive material for the cathode and the anode. The DC voltage is preferably about -202 000 to -200mV, especially -100,000 to -400mV for fresh water and about -2,500 to -200mV, especially -2,000 to -400mV for seawater in terms of the cathode potential based on a reference electrode relative to a saturated calomel electrode potential.

2. 发明专利

DE3903279A1 未知
公开(公告)号：DE3903279A1
公开(公告)日：1989-08-10
申请号：DE3903279
申请日：1989-02-03
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KAWAKI TAKAO , KOBAYASHI MAKOTO , AOKI OSAMU , IWAI TATSUO , GOTO YUKIFUMI
IPC分类号： C07C323/16 , C08F12/30 , C08G18/67 , G02B1/04
摘要： A novel sulfur-containing aromatic vinyl compound represented by the following general formula (I) [I] wherein R1 represents an alkylene group having 1 to 3 carbon atoms and R2 represents an alkylene group having 2 to 8 carbon atoms, and the two bonds in the benzene ring are meta or para to each other. A curable composition comprising at least one of the said vinyl compounds, an isocyanate compound and a radical polymerization initiator. On heating, the composition gives a crosslinked polymer article useful as lenses.

3. 发明专利

JPH021462A SULFUR-CONTAINING AROMATIC VINYL COMPOUND 失效
公开(公告)号：JPH021462A
公开(公告)日：1990-01-05
申请号：JP1389889
申请日：1989-01-25
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KAWAKI TAKAO , KOBAYASHI MAKOTO , AOKI OSAMU , GOTO YUKIFUMI
IPC分类号： C07C323/12 , C08F12/00 , C08F12/30 , C08G18/67 , G02B1/04
摘要： NEW MATERIAL:A compound expressed by formula I (R1 is 1-3C alkylene; R2 is 2-8C alkylene; two direct bonds in the benzene ring are mutually located at the m- and p-positions). EXAMPLE:2-(3-Vinylbenzylthio)ethanol. USE:A component of curable compositions capable of providing lightweight crosslinked polymers having characteristics of a high refractive index and Abbe' s number by using the compound expressed by formula I, further excellent in weather, heat resistance, strength, etc., and extremely useful for plastic lenses in eyeglasses for especially correcting visual acuity. PREPARATION:A halogenated styrene derivative expressed by formula II (X is Cl or Br) is reacted with a hydroxyl group-containing thiol compound expressed by formula III in the presence of an alkali (e.g., NaOH or KOH) to afford the compound expressed by formula I.

4. 发明专利

JPS6335541A PRODUCTION OF CHLOROFORMATE CONTAINING (METH)ACRYLOYL GROUP AT MOLECULAR END 失效
公开(公告)号：JPS6335541A
公开(公告)日：1988-02-16
申请号：JP17877686
申请日：1986-07-31
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： MASAI HIROSHI , YOSHIMURA YUICHI , GOTO YUKIFUMI
IPC分类号： C07C68/02 , C07C69/96
摘要： PURPOSE:To obtain the titled high-purity compound useful as a monomer for crosslinking, raw material for carbonic acid ester, etc., readily and in high yield, by using a specific ether as a reaction auxiliary and reacting an OH- containing (meth)acrylate with phosgene. CONSTITUTION:1mol OH-containing (meth)acrylate such as 2-hydroxyethyl methacrylate, etc., shown by the formula (R1 is H or CH3; R2 is 2-10C alkylene or ether containing 1-5 oxygens) is reacted with 1-1.5mol phosgene by the use of 0.2-20 times as much an ether such as tetrahydrofuran (THF), etc., as the (meth)acrylate by weight as a reaction auxiliary at -20-50 deg.C, preferably 0-20 deg.C, THF is distilled away from the reaction solution under reduced pressure to give the aimed compound such as methacryloxyethyl chloroformate, etc., in high purity of >=95%.

5. 发明专利

JPH10139511A CEMENT ADMIXTURE 失效
公开(公告)号：JPH10139511A
公开(公告)日：1998-05-26
申请号：JP29671096
申请日：1996-11-08
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KURATA HIROSHI , ARAKAWA SATOSHI , SOMEYA MASAO , GOTO YUKIFUMI
IPC分类号： C04B24/28
摘要： PROBLEM TO BE SOLVED: To provide a cement admixture high in water reducing performance by using a polymer induced from an oxycarboxylic acid having a specified melting point and maleamic acid. SOLUTION: This cement admixture is constituted of a polymer formed by melting at

6. 发明专利

JP2591012B2 失效
公开(公告)号：JP2591012B2
公开(公告)日：1997-03-19
申请号：JP2189088
申请日：1988-02-03
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KAWAKI TAKAO , KOBAYASHI MAKOTO , AOKI OSAMU , IWAI TATSUO , GOTO YUKIFUMI
IPC分类号： G02B1/04 , C08G18/38 , C08G18/67

7. 发明专利

JPH07256266A METHOD FOR WATER TREATMENT IN COOLING WATER SYSTEM 失效
公开(公告)号：JPH07256266A
公开(公告)日：1995-10-09
申请号：JP5187194
申请日：1994-03-23
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KAJIWARA SHOICHIRO , OZAKI BUNICHI , YAMADA YOZO , GOTO YUKIFUMI
IPC分类号： C02F1/50 , A01N33/12
摘要： PURPOSE:To prevent slime damage, scale damage, corrosion damage, etc., in a cooling water system by using a water-soluble cationic polymer, a halogenated aliph. nitroalcohol and a phosphonic acid or its salt and/or a carbonic acid-type low mol.wt. polymer. CONSTITUTION:When water treatment is performed in an open-type circulation- type cooling water system wherein slime damage, scale damage, corrosion damage and bacteria of Legionella genus occur, 1-50ppm water-soluble cationic polymer, 1-50ppm halogenated aliph. nitroalcohol and 1-50ppm phosphonic acid or its salt and/or 1-50ppm carbonic acid-type low mol.wt. polymer are incorporated into either blow water, feeding water or stored water in the cooling water system. In addition, in this case, as the water-soluble cationic polymer, a compd. of formula I or II is used. In addition, as the halogenated aliph. nitroalcohol, 2-bromo-2-nitropropane diol-1,3 is used.

8. 发明专利

JPH01197514A COMPOSITION FOR LENS OF HIGH REFRACTIVE INDEX 失效
公开(公告)号：JPH01197514A
公开(公告)日：1989-08-09
申请号：JP2189088
申请日：1988-02-03
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： KAWAKI TAKAO , KOBAYASHI MAKOTO , AOKI OSAMU , IWAI TATSUO , GOTO YUKIFUMI
IPC分类号： G02B1/04 , C08G18/38 , C08G18/67
摘要： PURPOSE:To provide the title compsn. giving a resin having a high refractive index, a low specific gravity and excellent heat resistance after curing, by mixing a specific sulfur-contg. arom. vinyl compd. with an isocyanate compd. at a predetermined molar ratio. CONSTITUTION:A sulfur-contg. arom. vinyl compd. (A) of formula I (wherein X is H, ROH or RSH; R is a 1-4C hydrocarbon group) (e.g., formula II or III) and an isocyanate compd. (B) (e.g., isophorone diisocyanate and phenylene diisocyanate) are mixed in such a way that the ratio of the total molar number of the vinyl groups to that of the isocyanate groups in the compsn. is in the range of 0.5 or larger and 2 or smaller to prepare a compsn. for a lens of high refractive index. It is possible to prepare a plastic lens material suitable for glasses, etc., by adding a radical polymn. initiator in this compsn., polymerizing it and curing it.

9. 发明专利

JPS63238029A SEPARATION OF DIVINYLBENZENE 失效
公开(公告)号：JPS63238029A
公开(公告)日：1988-10-04
申请号：JP7028787
申请日：1987-03-26
申请人： MITSUBISHI GAS CHEMICAL CO
发明人： TODA FUMIO , GOTO YUKIFUMI
IPC分类号： C07C7/152 , C07C1/00 , C07C15/44 , C07C67/00
摘要： PURPOSE:To facilitate the separation of divinylbenzene by forming a clathrate complex by bringing a mixture containing divinylbenzene into contact with biphenyl-2,2'-dicarboxylic acid tetracyclohexylamide and crystallizing out the complex. CONSTITUTION:A mixture containing divinylbenzene such as a mixture containing m-divinylbenzene, p-divinylbenzene, ethylvinylbenzene and biphenyl-2,2'-dicarboxylic acid tetracyclohexylamide are brought into contact, preferably in an organic solvent such as an other, glycol, benzene or hexane to form the clathrate complex. Then, the complex is crystallized out and heated under reduced pressure to eliminate divinylbenzene easily. The biphenyl-2,2'- dicarboxylic acid tetracyclohexylamide can be reused.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式