公开(公告)号：US3767502A

公开(公告)日：1973-10-23

申请号：US3767502D

申请日：1971-12-29

申请人： DAICEL LTD

发明人： ISHII K ,  KONOMI S ,  ISHIGURO Y

IPC分类号： B01D61/08 ,  B01D61/10 ,  B01D61/18 ,  B01D61/20 ,  B01D61/30 ,  B01D63/00 ,  B01D63/06 ,  B01D71/16 ,  B29C27/00 ,  B01D13/00

CPC分类号： B01D63/081 ,  B01D67/0009 ,  B01D71/16 ,  B01D2313/04

摘要： A supported semipermeable membrane is prepared by affixing sealing members to the end of a permeable support and then applying a semipermeable membrane forming solution on the support and the sealing members to cover them with a continuous semipermeable membrane, said sealing members being made of a material which can be dissolved by the semipermeable membrane forming solution to form a welded unity with the semipermeable membrane, whereby the ends of the membrane are sealed without the use of an adhesive.

摘要翻译： 通过将密封构件固定到可渗透支撑体的端部，然后将半透膜形成溶液施加在支撑件上和密封构件上以用连续半透膜覆盖以制备支撑半透膜，所述密封构件由以下材料制成： 可以通过半透膜形成溶液溶解以形成具有半透膜的焊接单位，由此膜的端部不使用粘合剂被密封。

公开(公告)号：US3824253A

公开(公告)日：1974-07-16

申请号：US21322071

申请日：1971-12-28

申请人： DAICEL LTD

发明人： UEMATSU E ,  ISHII K ,  TSUJI K ,  MAEHARA M ,  TAKAHASHI H

IPC分类号： C07D327/04 ,  C07D331/04 ,  C07D89/06

CPC分类号： C07D331/04

摘要： A PROCESS FOR PREPARING PROPANE SULTONE FROM A HYDROXYPROPANE SULFONIC ACID CONTAINING SOLUTION WHICH IS CHARACTERIZED BY CONCENTRATING THE SOLUTION UNTIL THE CONCENTRATION RATIO WITHIN A SPECIFIC RANGE IS REACHED AND THEN SUBJECTING THE OBTAINED CONCENTRATED SOLUTION TO A CONTINUOUS DISTILLATION IN AN AGITATED-FILM EVAPORATOR UNDER A HIGH VACUUM OF LOWER THAN 15 MM. HG TO DISTILL AND RECOVER PROPANE SULTONE.

公开(公告)号：US3816150A

公开(公告)日：1974-06-11

申请号：US21382471

申请日：1971-12-29

申请人： DAICEL LTD

发明人： ISHII K ,  KOJIMA K ,  ISHIKAWA K

IPC分类号： C08L1/00 ,  B01D71/16 ,  C08B3/16 ,  C08B3/28 ,  C08J7/00 ,  C08L1/12 ,  C08B27/44 ,  C08B27/26 ,  C08B27/30 ,  C08B27/72

CPC分类号： B01D71/16 ,  B01D67/0093 ,  C08B3/16 ,  C08B3/28 ,  C08J7/045 ,  C08J2301/14

摘要： A process for modifying cellulose acetate by treating an object made of a mixed ester of cellulose and (1) acetic acid and (2) a polybasic carboxylic acid, i.e., a dibasic carboxylic acid and/or tribasic carboxylic acid, with a divalent or higher metal salt to impart solvent resistance to the object.

摘要翻译： 通过处理由纤维素和（1）乙酸的混合酯制成的物体和（2）多元羧酸（即二元羧酸和/或三元羧酸）与二价或更高级的化合物来改性乙酸纤维素的方法 金属盐，以赋予物体耐溶剂性。

公开(公告)号：US3804754A

公开(公告)日：1974-04-16

申请号：US28244772

申请日：1972-08-21

申请人： DAICEL LTD

发明人： ISHIGURO Y ,  ISHII K ,  KONOMI S

IPC分类号： A23L15/00 ,  A23C9/142 ,  A23J1/00 ,  A23J1/08 ,  A23J1/20 ,  B01D61/02 ,  B01D61/14 ,  B01D65/08 ,  C02F1/44 ,  B01D13/00

CPC分类号： A23J1/205 ,  A23C9/1427 ,  A23J1/00 ,  A23J1/002 ,  A23J1/08 ,  A23V2002/00 ,  B01D61/025 ,  B01D65/08 ,  B01D2321/168 ,  A23V2300/34

摘要： A SURFACTANT IS ADDED TO AN AQUEOUS PROTEIN SOLUTION UNDERGOING PURIFICATION OR CONCENTRATION USING A SEMIPERMEABLE MEMBRANE, IN ORDER TO IMPROVE THE WATER PERMEATION RATE OF THE MEMBRANE.

公开(公告)号：US3819513A

公开(公告)日：1974-06-25

申请号：US28244972

申请日：1972-08-21

申请人： DAICEL LTD

发明人： ISHIGURO Y ,  ISHII K ,  KONOMI S

IPC分类号： B08B9/053 ,  B01D41/00 ,  B01D61/08 ,  B01D61/10 ,  B01D65/04 ,  B08B9/00 ,  B08B9/04 ,  B08B9/055 ,  B01D31/00

CPC分类号： B01D63/06 ,  B01D65/02 ,  B01D2321/2091

摘要： Two or more screens are located within a piping system and a sponge ball or balls are disposed in the system for movement back and forth between the screens. By switching valves installed in the piping system, the sponge ball or balls are automatically and intermittently moved back and forth to clean the piping system.

摘要翻译： 两个或更多个筛网位于管道系统内，并且海绵球或球布置在系统中用于在筛网之间来回移动。 通过切换安装在管道系统中的阀门，海绵球或球自动间歇地前后移动以清洁管道系统。

公开(公告)号：US3804932A

公开(公告)日：1974-04-16

申请号：US27129872

申请日：1972-07-13

申请人： DAICEL LTD

发明人： ISHII K ,  KOJIMA K ,  ISHIKAWA K

IPC分类号： B01D71/10 ,  B29C39/00 ,  C08J9/28 ,  C08L1/10 ,  C08L1/12 ,  B29C5/00

CPC分类号： B01D67/0011 ,  B01D71/16 ,  B01D2323/16 ,  C08J9/28 ,  C08J2201/0502 ,  C08J2301/12

摘要： SEMIPERMEABLE MEMBRANES FOR USE IN REVERSE OSMOSIS OR ULTRAFILTRATION ARE PREPARED BY CAST MOLDING A CAST MOLDING SOLUTION COMPRISING CELLULOSE ACETATE, A SWELLING AGENT AND A COMPOSITE SOLVENT COMPRISING ACETONE AS A FIRST COMPONENT AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1,4-DIOXANE, 1,3-DIOXOLANE, DIMETHYL FORMAMIDE AND 2-METHOXYETHYL ACETATE AS A SECOND COMPONENT. THE SOLUTION IS CAST MOLDED AT AMBIENT TEMPERATURE.