公开(公告)号：JPH0356188A

公开(公告)日：1991-03-11

申请号：JP19334889

申请日：1989-07-25

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  NOYORI MASARU ,  MORI SHIGEKI ,  ITO TSUKASA

IPC: C02F1/42

Abstract: PURPOSE:To extend the filtering life of a precoating layer and to enhance the quality of treated water by using a powder ion exchange resin and an ion exchange filter as a precoating material and setting the water content of the ion exchange fiber to a specific numerical value. CONSTITUTION:A powder ion exchange resin pref. has a particle size of about 1 - 250 mum. It is important that the water content of an ion exchange fiber is within a range of 1.0 - 5.0 and there is no special limit in the shape of said fiber but it pref. consists of an ion exchange polymer and a reinforcing polymer and the fiber length thereof is pref. about 0.1 - 1mm. Therefore, when the powder ion exchange resin and the ion exchange fiber are stirred and mixed in water, the ion exchange fiber becomes the nucleus of the powder ion exchange resin to form floc and a proper void ratio and compression strength are imparted to drastically extend the life of a precoating material and, by the excellent ion exchange capacity of the fiber having a large surface area, the quality of treated water can be enhanced in addition.

公开(公告)号：JPH0310388B2

公开(公告)日：1991-02-13

申请号：JP8760387

申请日：1987-04-09

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  YOSHIOKA TOSHIO ,  NOYORI MASARU

IPC: C02F1/28 ,  C02F1/42

公开(公告)号：JPH03185A

公开(公告)日：1991-01-07

申请号：JP13077789

申请日：1989-05-24

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  NOYORI MASARU ,  MORI SHIGEKI ,  ITO TSUKASA

IPC: C02F1/42 ,  B01D37/02

Abstract: PURPOSE:To hold the strength of a precoat material in a filter and to effectively prevent the compaction of a precoat layer in the filter by using ion exchange fiber constituted of powder ion exchange resin, ion exchange polymers and reinforcing polymers. CONSTITUTION:At the time of purifying water used in a nuclear power station or the like by a precoat filter, as a precoat material, ion exchange fiber constituted of powder ion exchange resin, ion exchange polymers such as crosslinked and insolubilized polystyrene-series compounds and reinforcing polymers such as poly-alpha-olefine is used. By this method, the ion exchange resin contg. the reinforcing polymers becomes the nucleus of the powder ion exchange resin to form a floc body and to provide the precoat material with suitable void ratio and compressive strength. Thus, the service life of the precoat material is remarkably prolonged and the quality of treated water is furthermore improved.

公开(公告)号：JPH02228332A

公开(公告)日：1990-09-11

申请号：JP5091689

申请日：1989-03-01

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  NOYORI MASARU ,  YOSHIOKA TOSHIO

IPC: C08J5/20 ,  B01J47/12 ,  D01F6/20 ,  D01F8/06 ,  D01F8/10 ,  D06M11/00 ,  D06M13/02 ,  D06M13/07 ,  D06M13/127 ,  D06M13/325 ,  D06M13/328 ,  D06M101/00 ,  D06M101/16 ,  D06M101/18 ,  D06M101/20 ,  D06M101/22

Abstract: PURPOSE:To widen an activated surface area and to improve an ion-exchange capacity by spinning a multi-core islands-in sea type composite fiber consisting of two polymers and removing the island component. CONSTITUTION:Composite melt-spinning of a mixed polymer consisting of 10-90% poly(monovinyl arom. compd.) (e.g. PS and a polymer of island parts for reinforcement (e.g. PE) is performed to obtain a multi-core islands-in sea type composite fiber, which is cut and ion-exchange groups or crosslinking groups are introduced thereinto and the cut fibers are made into a yarn. Then, the polymer of island parts for reinforcement is removed to obtain an ion- exchange fiber with a crosssectional shape cut in the direction perpendicular to the fiber axis of the form of a lotus root.

公开(公告)号：JPS6470185A

公开(公告)日：1989-03-15

申请号：JP22870787

申请日：1987-09-11

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  YOSHIOKA TOSHIO ,  YOKOTA HARUO ,  SUZUKI SHOROKU

IPC: C02F1/42 ,  B01J47/12

Abstract: PURPOSE:To enhance water softening efficiency by packing a specific cation type ion exchange fiber layer and cation type ion exchange resin layer into this water softener. CONSTITUTION:The cation type ion exchange fiber layer of an Na type and the cation type ion exchange resin layer of an Na type are packed into the water softener to 1/100-1/1 diameter ratio. Short fibers of 1-100mu diameter, filament yarn, felt, non-woven fabrics, etc., are used for the ion exchange fibers. The ion exchange resins sized 10-1,000mu are preferably used. Hardness components are thereby economically and completely removed with the small size.

公开(公告)号：JPS6344988A

公开(公告)日：1988-02-25

申请号：JP18905086

申请日：1986-08-12

Applicant: TORAY INDUSTRIES

Inventor： KUBO NAMI ,  NOYORI MASARU ,  YOSHIMURA AKIHIRO

IPC: C02F1/42

Abstract: PURPOSE:To effectively remove all of organocarbons in ultrapure water, by treating raw water with a macro-reticulated ion exchange resin and an ion exchange fiber. CONSTITUTION:Raw water is pretreated using ultrafiltration membrane composed of a cellulosic, polypropylene or polymethacrylate org. membrane and subsequently treated with a macro-reticulated ion exchange resin (having both macro-porosity and micro-porosity by changing a polymerization method of styrene and benzen at the time of the introduction of an ion exchange group). Next, the raw water is treated with a water-insoluble org. ion exchange fiber (composed of an ion exchange polymer obtained by introducing an ion exchange group into an ion exchange polymer such as a polystyrenic or polyphenolic resin). By this method, ultrapure water having extremely high water quality is obtained.