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1. 发明专利

CA2087421A1 COMPOSITE REVERSE OSMOSIS MEMBRANE AND NOVEL ACID CHLORIDE 未知
公开(公告)号：CA2087421A1
公开(公告)日：1993-07-23
申请号：CA2087421
申请日：1993-01-15
申请人： NITTO DENKO CORP
发明人： HACHISUKA HISAO , KOJIMA KATSUHIDE , NAKAZONO YUTAKA , SHIMIZU MITSURU , HIROSE MASAHIKO , KIHARA YASUO , MAEDA MASATOSHI , IKEBATA HISASHI , MATSUMOTO KENJI
IPC分类号： B01D69/12 , B01D71/56 , C07C61/29 , C08G69/26 , C07C61/40 , B01D61/02 , B01D69/10
摘要： A composite reverse osmosis membrane comprising a thin membrane and a microporous supporting membrane supporting it, wherein said thin membrane mainly comprises a crosslinked polyamide comprising; (a) an amine component containing at least one member selected from the group consisting of substantially monomeric amine compounds each having at least two primary and/or secondary amino groups, and (b) an acid halide component containing at least one member selected from the group consisting of substantially monomeric cyclic acid halide compounds each having at least two acid halide groups and comprising at least two rings.

2. 发明专利

JPH07259836A DOUBLE LAYER TUBE FOR CABLE GUIDE PIPE 失效
公开(公告)号：JPH07259836A
公开(公告)日：1995-10-09
申请号：JP5357994
申请日：1994-03-24
申请人： NITTO DENKO CORP
发明人： SHIMIZU MITSURU , OTA MUTSUKO
IPC分类号： F16C1/26
摘要： PURPOSE:To prevent inner/outer layers from easily separating by providing the inner layer formed of composition containing a synthetic resin and a filler and the outer layer formed of the same synthetic resin to this inner layer and further formed on a peripheral surface of the inner layer. CONSTITUTION:Fluororesin of copolymer or the like of polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkylvinylether is used as a synthetic resin from the viewpoint of low friction property, to compound a filler for improving wearing resistance in the case of forming an inner layer. Glass fiber, carbon fiber, boron fiber, etc., are listed as the filler. An outer layer, consisting of the same synthetic resin to the inner layer, is formed. A double layer tube can be manufactured by a method of extruding the same synthetic resin onto a tube peripheral surface of the inner layer, and by a method of simultaneously extruding each resin in a tube shape so that the same synthetic resin to forming the inner layer is the outer layer. In this way, the tube is excellent in durability further to prevent the inner/outer layers from easily generating separation.

3. 发明专利

JPH06154568A COMPOSITION REVERSE OSMOSIS MEMBRANE 失效
公开(公告)号：JPH06154568A
公开(公告)日：1994-06-03
申请号：JP31014992
申请日：1992-11-19
申请人： NITTO DENKO CORP
发明人： IKEHATA HISASHI , MATSUMOTO KENJI , SHIMIZU MITSURU , HACHISUGA HISAO , HIROSE MASAHIKO , KIHARA YASUO , MAEDA MASATOSHI , KOJIMA KATSUHIDE
IPC分类号： B01D71/56
摘要： PURPOSE:To provide a composite reverse osmosis membrane with high salt interception rate and high resistance against chlorine disinfectant, comprising as a principal component a thin membrane based on polyamide which has a specific structure on a microporous support film when manufacturing a composite reverse osmosis membrane for selectively separating the components of a liquid blend. CONSTITUTION:The membrane is composed of a thin membrane and a microporous support film which supports the former. The thin membrane comprises as a principal component, a polyamide which is composed of (a) an amine component containing at least one member selected from the group of amine compounds of substantially monomer and having at least two primary or/and secondary amino groups, and (b) an acid halide component which is composed of as a principal component, an acid halide having four acid halide groups and cyclobutane-(1,2,3,4)-chloride tetra-carboxylate of substantially monomer which can assume an isomeric structure with at least 80% of cyclobutane-(1alpha,2beta,3alpha,4beta)-chloride tetracarboxylate of trans form.

4. 发明专利

JPH05339201A 失效
公开(公告)号：JPH05339201A
公开(公告)日：1993-12-21
申请号：JP17167992
申请日：1992-06-04
申请人： NITTO DENKO CORP
发明人： SHIMIZU MITSURU , HACHISUGA HISAO , HIROSE MASAHIKO , KIHARA YASUO , MAEDA MASATOSHI , NAKAZONO YUTAKA , KOJIMA KATSUHIDE , IKEHATA HISASHI , MATSUMOTO KENJI
IPC分类号： C07B61/00 , C07C51/60 , C07C61/06 , C07C61/15
摘要： PURPOSE:To highly easily obtain in high purity and yield the trans modification especially useful among alicyclic polyvalent acid halide diastereomers. CONSTITUTION:(A) An alicyclic polyfunctional carboxylic acid is made to react at 0-120 deg.C pref. 20-80 deg.C with (B) a halogenating agent, a compound obtained from (1) an element capable of making a covalent bond with a halogen among the elements in the third period of the Periodic Table (e.g. Si, P, S), (2) oxygen and (3) a halogen (pref. thionyl halide, phosphoryl halide or sulfuryl halide) to selectively halogenate only the trans modification among the compound A followed by separating the resultant halogenated trans modification from the cis modification of the alicyclic polyfunctional carboxylic acid unreacted and acid anhydride, etc. Use of the trans modification thus obtained as a material for producing high polymers facilitates controlling the thermal, physical or chemical properties of the polymers within a specified range. With the present method, cyclopentane-1alpha, 2alpha, 4beta-tricarbonyl chloride of formula I or cyclopentane-1alpha, 2alpha, 4alpha-tricarbonyl chloride, each new compound useful for producing separation membranes, can be obtained.

5. 发明专利

JPH0592128A COMPOSITE SEMIPERMEABLE MEMBRANE AND PRODUCTION THEREOF 失效
公开(公告)号：JPH0592128A
公开(公告)日：1993-04-16
申请号：JP25083991
申请日：1991-09-30
申请人： NITTO DENKO CORP
发明人： SHIMATANI SHUNICHI , SHIMIZU MITSURU , HACHISUGA HISAO
IPC分类号： B01D71/56
摘要： PURPOSE:To obtain high water permeability, high desalting capacity and high oxidation resistance by supporting an ultrathin film composed of polyamide consisting of a polyfunctional secondary amino compound being a main amine component unit and a polyfunctional carboxylic acid unit being a main acid component unit on a microporous support film. CONSTITUTION:In a composite semipermeable membrane suitable for producing fresh water by desalting of seawater or ultrapure water used in the production of a semiconductor and formed by supporting an ultrathin film on a microporous support film, the ultrathin film is formed from polyamide containing a polyfunctional secondary amino compound unit represented by formula 1 as a main amine component unit and containing at least one polyfunctional carboxylic acid unit selected from a difunctional carboxylic acid unit represented by formula 2 and a trifunctional carboxylic acid unit represented by formula 3 as a main acid component unit. In the formulae, Ra and Rb are a 1-4C alkylene group, Rc and Rd are a 1-4C alkyl group, Re and Rf are hydrogen or a 1-4C alkyl group and a ring A is a benzene ring or a cyclohexene ring.

6. 发明专利

JPH04271820A COMPOSITE REVERSE OSMOSIS MEMBRANE AND ITS MANUFACTURE 失效
公开(公告)号：JPH04271820A
公开(公告)日：1992-09-28
申请号：JP5579391
申请日：1991-02-26
申请人： NITTO DENKO CORP
发明人： HACHISUGA HISAO , SHIMATANI SHUNICHI , SHIMIZU MITSURU , MATSUMOTO KENJI
IPC分类号： B01D71/56 , B01D71/82
摘要： PURPOSE:To offer a composite reverse osmosis membrane having high water permeability and desalting performance combinedly even in low pressure operation and suitable for desalting of brine and seawater and manufacturing extra pure water. CONSTITUTION:Ultrathin membrane constituted of a main constituting unite of a crosslinked high molecule incorporating amide linkage and ester linkages is formed on a porous supporting film to accomplish the objective composite reverse osmosis membrane.

7. 发明专利

JPH04267938A DUAL SEMIPERMEABLE MEMBRANE AND PREPARATION THEREOF 失效
公开(公告)号：JPH04267938A
公开(公告)日：1992-09-24
申请号：JP2985891
申请日：1991-02-25
申请人： NITTO DENKO CORP
发明人： SHIMATANI SHUNICHI , SHIMIZU MITSURU
IPC分类号： B01D69/12 , B01D71/64
摘要： PURPOSE:To obtain a dual semipermeable membrane having high water permeability and high desalting capacity in low pressure operation and also having high oxidation resistance by supporting an ultra-thin membrane composed of polyamide containing a polyfunctional amino compound unit as a main amine component unit and a polyfunctional carboxylic acid unit as a main acid component unit on a microporous support membrane. CONSTITUTION:The ultra-thin membrane supported on a microporous support membrane is formed from polyamide containing a polyfunctional amino compound unit represented by formula I (wherein Z is a 4-10C saturated or unsaturated hydrocarbon ring, Ra and Rb are respectively independently a 1-4C alkylene group which may have a hydroxyl group, Rc and Rd are respectively independently H or a 1-4C alkyl group which may has a hydroxyl group and m and n are respectively independently 0 or 1) as a main amine component unit and a difunctional carboxylic acid unit represented by formula II (Ra is H or a 1-4C alkyl group and a ring A is a benzene ring or a cyclohexane ring) or a trifunctional carboxylic acid unit represented by formula III (wherein Rf is H or a 1-4C alkyl group and a ring A is a benzene ring or a cyclohexane ring) as a main acid component unit.

8. 发明专利

JPH04267936A DUAL SEMIPERMEABLE MEMBRANE AND PREPARATION THEREOF 失效
公开(公告)号：JPH04267936A
公开(公告)日：1992-09-24
申请号：JP2985991
申请日：1991-02-25
申请人： NITTO DENKO CORP
发明人： SHIMATANI SHUNICHI , SHIMIZU MITSURU , HACHISUGA HISAO
IPC分类号： B01D71/56 , B01D69/12 , B01D71/82
摘要： PURPOSE:To obtain a dual semipermeable membrane having high water permeability and high desalting capacity in low pressure operation and also having oxidation resistance by supporting an ultra-thin membrane composed of polyamide containing a polyfunctional amino compound unit as a main amine component unit and a polyfunctional carboxylic acid unit as a main acid component unit on a microporous support membrane. CONSTITUTION:The ultra-thin membrane supported on a microporous support membrane is formed from polyamide containing a polyfunctional amino compound unit represented by formula I (wherein R is a 3-8C trivalent saturated or unsaturated org. group which may contain N and/or O and R' is H or a 1-3C alkyl group) as a main amino component unit and at least a polyfunctional carboxylic acid unit selected from a difunctional carboxylic acid unit represented by formula II (wherein Ra is H, or a 1-4C alkyl group, and a ring A is a benzene ring or a cyclohexane ring) and a trifunctional carboxylic acid unit represented by formula III (wherein Rb is H or a 1-4C alkyl group, and a ring A is a benzene ring or a cyclohexane ring) as a main acid component unit.

9. 发明专利

JPH0474517A COMPOSITE REVERSE OSMOSIS MEMBRANE 失效
公开(公告)号：JPH0474517A
公开(公告)日：1992-03-09
申请号：JP18867090
申请日：1990-07-16
申请人： NITTO DENKO CORP
发明人： SHIMIZU MITSURU , SHIMATANI SHUNICHI
IPC分类号： B01D71/54 , B01D71/56
摘要： PURPOSE:To obtain a composite reverse osmosis membrane equipped with a crosslinked polymer membrane having a high salt blocking rate, high water permeability and high chlorine resistance by forming a membrane composed of a crosslinked polymer having a specific composition on a porous support membrane. CONSTITUTION:The first layer composed of a solution prepared by dissolving a polyamino compound in the first solvent, for example, water, a lower alcohol such as methanol or ethanol or acetonitrile is formed on a porous support membrane. Subsequently, the second layer composed of a solution prepared by dissolving at least one compound selected from a dicarboxylic dihalide and a tricarboxylic trihalide and a polyfunctional compound having three or more isocyanate or ester groups in its molecule in the second solvent incompatible with the first solvent is formed on the first layer. Both layers are heated and dried to form a membrane composed of a crosslinked polymer on the porous support membrane to obtain a composite reverse osmosis membrane. The aforementioned polyamino compound has two or more amino groups in its molecule.

10. 发明专利

JPH0471628A COMPOSITE SEMIPERMEABLE MEMBRANE AND ITS PRODUCTION 失效
公开(公告)号：JPH0471628A
公开(公告)日：1992-03-06
申请号：JP18505590
申请日：1990-07-11
申请人： NITTO DENKO CORP
发明人： SHIMATANI SHUNICHI , SHIMIZU MITSURU
IPC分类号： B01D71/56
摘要： PURPOSE:To obtain high desalting property and water permeability by forming an ultrathin film comprising aromatic polyamide having two or more -NH groups and one or more amino groups at the position of steric hindrance. CONSTITUTION:The aromatic polyamide which constitutes the ultrathin film contains a structural component expressed by formulae (I), (II) or the like as a part of the polyamide. This structural component has two or more -NH groups and at least one amino group at the position of steric hindrance. This composite semipermeable membrane is obtained by applying an aq. soln. containing a multifunctional aromatic amine component such as 1, 2,4-triaminobenzene, etc., on a supporting film such as polysulphone, etc., and then applying a water- incompatible org. solvent soln. containing multifunctional acid halide such as trimesic acid chloride, etc., to effect condensation polymn. in the interface of the aq. soln. Thus, the polyamide is produced on the supporting film and if required, it is then treated by heating. The obtd. membrane has extremely high desalting property and water permeability.

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