JPS60197288A - Preparation of aseptic water - Google Patents
Preparation of aseptic waterInfo
- Publication number
- JPS60197288A JPS60197288A JP59053845A JP5384584A JPS60197288A JP S60197288 A JPS60197288 A JP S60197288A JP 59053845 A JP59053845 A JP 59053845A JP 5384584 A JP5384584 A JP 5384584A JP S60197288 A JPS60197288 A JP S60197288A
- Authority
- JP
- Japan
- Prior art keywords
- water
- hollow
- ratio
- hollow fiber
- average pore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000012510 hollow fiber Substances 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 229920000069 polyphenylene sulfide Polymers 0.000 claims abstract description 11
- 239000004734 Polyphenylene sulfide Substances 0.000 claims abstract description 10
- 241000894006 Bacteria Species 0.000 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000008223 sterile water Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 11
- 235000020681 well water Nutrition 0.000 abstract description 4
- 239000002349 well water Substances 0.000 abstract description 4
- 239000013043 chemical agent Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000011800 void material Substances 0.000 abstract 3
- -1 polyethylene terephthalate Polymers 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 6
- 239000000835 fiber Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- XWUCFAJNVTZRLE-UHFFFAOYSA-N 7-thiabicyclo[2.2.1]hepta-1,3,5-triene Chemical compound C1=C(S2)C=CC2=C1 XWUCFAJNVTZRLE-UHFFFAOYSA-N 0.000 description 1
- ODPYDILFQYARBK-UHFFFAOYSA-N 7-thiabicyclo[4.1.0]hepta-1,3,5-triene Chemical compound C1=CC=C2SC2=C1 ODPYDILFQYARBK-UHFFFAOYSA-N 0.000 description 1
- 229940122930 Alkalising agent Drugs 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 229920000265 Polyparaphenylene Polymers 0.000 description 1
- 241000190020 Zelkova serrata Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229920006125 amorphous polymer Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- JUVIOZPCNVVQFO-HBGVWJBISA-N rotenone Chemical compound O([C@H](CC1=C2O3)C(C)=C)C1=CC=C2C(=O)[C@@H]1[C@H]3COC2=C1C=C(OC)C(OC)=C2 JUVIOZPCNVVQFO-HBGVWJBISA-N 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
Abstract
Description
【発明の詳細な説明】
廃水の再利用、医薬品や食品の製造、電子工業用水など
において無菌水の需要は枚挙にいとまがない。近年、こ
のような無菌水の製造に、膜濾過法が雀エネルギーでり
るなど様々な利点から適用されている。このような無菌
水製造用の分離膜には、セルロース系、ナイロン６．６
あるいはスルホン化ポリオレフィンなどが用いられてい
る。DETAILED DESCRIPTION OF THE INVENTION The demand for sterile water is overwhelming for purposes such as wastewater reuse, pharmaceutical and food manufacturing, and electronic industry water. In recent years, membrane filtration has been applied to the production of sterile water due to its various advantages, including its use of energy. Separation membranes for producing sterile water include cellulose-based and nylon 6.6 membranes.
Alternatively, sulfonated polyolefins are used.
しかし、これらの膜は耐熱性、耐薬品性の満足できるも
のはなく、化学洗浄あるいはスチーム洗浄による滅閘処
理ができず、回生再使用が出来ない、ｊ漠寿命が短かい
などの問題を有していた。However, none of these membranes has satisfactory heat resistance or chemical resistance, cannot be sterilized by chemical or steam cleaning, cannot be reused, and has short service life. Was.
本発明者らは、かかる問題点を鑑み鋭意検討した結果、
化学薬剤または熱水あるいはスチームによる滅菌が可能
で、かつｉｐ過寿命が長い無菌水の製造方法を発明した
。As a result of intensive study in view of such problems, the present inventors found that
We have invented a method for producing sterile water that can be sterilized by chemical agents, hot water, or steam, and has a long IP overlife.
すなわち、平均孔径０．０１〜１μ、窒孔率１０〜８５
％の貫通した微多孔を有し、膜厚５〜２００μｍ、中空
率８〜８５％、外径３０μｒＩＬ〜５趨のポリフェニレ
ンスルフィドを主成分とする中空繊維を用いることによ
シ目的が達成されることを見出した。That is, the average pore diameter is 0.01 to 1μ, and the nitrogen porosity is 10 to 85.
This objective can be achieved by using hollow fibers mainly composed of polyphenylene sulfide, which have 5% penetrating microporosity, a membrane thickness of 5 to 200 μm, a hollow ratio of 8 to 85%, and an outer diameter of 30 μrIL to 5. I discovered that.
本発明で用いる中空繊維は外表面から内表面に貫通した
微多孔を有することが必要であり、このことは繊維の断
面を電子顕微鏡によシ観察して確認される。また平均孔
径は０．０１〜１μ、空孔率は１０〜８５％であること
が必要である。平均孔径０．０１μ以下、空孔率゛１０
％以下の場合は透水量が少なく実用的ではない。平均孔
径が１μ以上の場合は透過水中に菌が漏洩し、空孔率８
５％以−ヒの場合は中空系の機械的強度が弱くなる。な
お、平均孔径は電子顕微鏡観察から次式によ請求めるこ
とができる。The hollow fiber used in the present invention must have micropores that penetrate from the outer surface to the inner surface, and this is confirmed by observing the cross section of the fiber using an electron microscope. Further, it is necessary that the average pore diameter is 0.01 to 1 μm and the porosity is 10 to 85%. Average pore diameter 0.01μ or less, porosity ゛10
% or less, the amount of water permeation is so small that it is not practical. If the average pore diameter is 1μ or more, bacteria will leak into the permeated water, and the porosity will be 8.
If it is less than 5%, the mechanical strength of the hollow system becomes weak. Note that the average pore diameter can be calculated from electron microscopic observation using the following formula.
但しη＝２０〜１００
また空孔率は、１００個の孔が占める外表面の面＆を測
定し、そｎに基き外表面１ｃＩＬ２当りの微多孔の個数
を４葬し、空孔率（％）＝（外表面１ｃＩｎＦ尚りの微
多孔の細動つ×（平均孔径（ｃｍ）Ｘ−戸Ｘ５．１４Ｘ
１００’（１″計算してめることができる。However, η = 20 to 100 In addition, the porosity is determined by measuring the surface area of the outer surface occupied by 100 pores, and then calculating the number of micropores per 1 cIL2 of the outer surface by 4, and calculating the porosity (%). ) = (fibrillation of micropores of 1 cInF on the outer surface x (average pore diameter (cm) x - door x 5.14 x
It can be calculated by 100'(1'').
さらに、本発明に用いる中空欅維は、膜厚５〜２００μ
ｍ１中空率８〜８５％、外径６０μｒｒＬ〜５朋である
ことが必胃であめ。膜厚５μｍ以下、中空率８５％以上
、あるいは外径６０μｍ以下では中空繊維の伎械的強度
が低くなシ、膜厚２００μｒｒＬ１中空率８％以下、外
径５罪以上ではｆｆｓ過効率が低く実用的でない。なお
中空率は、顕微貌によりｌ＠、計的に測定した平均外径
Ｄｏと平均内径り、から中空率＝（Ｄｓ／Ｄｏ）”Ｘ
１００ （ｓ） として１１掬ルてめらｎる。Furthermore, the hollow keyaki fiber used in the present invention has a film thickness of 5 to 200 μm.
It is essential that m1 has a hollow ratio of 8 to 85% and an outer diameter of 60 μrr to 5 mm. If the film thickness is 5μm or less, the hollowness ratio is 85% or more, or the outer diameter is less than 60μm, the mechanical strength of the hollow fiber is low, and if the film thickness is 200μrr, the hollowness ratio is 8% or less, and the outer diameter is 5 or more, the ffs overefficiency is low and practical. Not on point. The hollowness ratio is determined by the microscopic appearance, the mean outer diameter Do and the mean inner diameter measured mechanically, and the hollowness ratio = (Ds/Do)"X
100 (s) and 11 scoops.
本発明に用いる微多孔含有する中空繊維は、ポ’Ｊ（ｐ
−フェニレンスルフィド）を主成分とするものでろゐ。The microporous hollow fiber used in the present invention is po'J (p
-phenylene sulfide) as the main component.
このような中空繊維は本出願人らの先細である％細昭５
７〜１６８４４６号に記載さ牡た方法によｐ製造するこ
とができる。Such hollow fibers are tapered by Applicants.
It can be produced by the method described in No. 7-168446.
本発明のポリフェニレンスルフィドとは、ポリマーの主
構成単位としてフェニレンスルフィド？ｌ１−９０モル
慟以上に／（有したポリマーをいう。他ｅこ１０モル悌
未満で含有できる構成単位としては、例えば、３′１能
フエニルスルフイドルケトンスルフイド、ジフェニルス
ルホンスルフィド、と（Ｒ：フルキル、フェニル、アル
コキシ、ニトロ、ハロゲン基のいづｎか）等を例示でき
る。The polyphenylene sulfide of the present invention is phenylene sulfide as the main constituent unit of the polymer? This refers to a polymer having 1-90 mol or more of mol. Examples include (R: any one of furkyl, phenyl, alkoxy, nitro, and halogen group).
ポリフェニレンスルフィドにブレンドできる他のポリマ
ーの嵐は６５％未満である。他のポリマーが３５％以上
を占めると、微多孔の形成、耐熱性、側薬品性、カ宇的
特性等のいづｌしたに欠点が生じてポリフェニレンスル
フィドの特質が消えてくる。ブレンドできる他のポリマ
ーとしては、ポリエチレンテレフタレート、ポリブチレ
ンテレフタレート、ナイロン−６、ナイロン−６６、ポ
リヵー・ｊζネート、ポリオキシメチレン、ボリフェニ
レンメキシド、ポリ−４−メチルベンゾン−１、ポリグ
ロピレン、ポリテトラフロロエチレン、ポリエーテルエ
ーテルケトン等の結晶性ポリマーや、ポリサルホン、ポ
リエーテルサルホン赫の非晶性ポリマーｔ−例示できる
。また、この様な原Ｉ＋偏脂は、酸化防止剤、帯電防止
剤、抗＃Ａ剤、Ｍ剤、表面活性剤等の添加剤を必敦に応
じて適ｉ合有することができる。Less than 65% of other polymers can be blended with polyphenylene sulfide. If other polymers account for 35% or more, defects such as the formation of microporous, heat resistance, side chemical properties, and anti-oxidant properties will occur, and the characteristics of polyphenylene sulfide will disappear. Other polymers that can be blended include polyethylene terephthalate, polybutylene terephthalate, nylon-6, nylon-66, polycarbonate, polyoxymethylene, polyphenylene mexide, poly-4-methylbenzone-1, polyglopylene, and polytetrafluoro. Examples include crystalline polymers such as ethylene and polyetheretherketone, and amorphous polymers such as polysulfone and polyethersulfone. In addition, such raw I+ biased fat may contain additives such as antioxidants, antistatic agents, anti-#A agents, M agents, and surfactants as necessary.
本発明の無凶水の製造においては、耐熱性、劇薬品性の
優ｎたポリ（フェニレンスルフィド）を特徴とする特許
繊維を用いるため、酸、アルカリ、酸化剤等の化学薬剤
に↓る滅菌あるいは、８０℃以上の熱水まｆｃは１００
〜１５０℃のスチームで洗浄した後、１過操作を繰り返
し行なうことが出来る。また、該中空繊維は、耐熱性お
よび機械的強度が従来の分＃膜に比べ優ｎあｆｃの、８
０〜１５０℃の加熱下での＃Ｊ過＞ １０ｗ′ｃｌＴ−
’以上の加圧下での１過などの効率的な１過操作を行な
うことができる。In producing the non-toxic water of the present invention, we use a patented fiber that is characterized by poly(phenylene sulfide), which has excellent heat resistance and strong chemical resistance, so it is sterilized by chemical agents such as acids, alkalis, and oxidizing agents. Alternatively, fc of hot water over 80℃ is 100
After washing with steam at ~150°C, one pass operation can be repeated. In addition, the hollow fibers have heat resistance and mechanical strength superior to that of conventional membranes.
#J filtration >10w'clT- under heating at 0-150℃
It is possible to carry out an efficient one-pass operation such as one-pass operation under a pressure higher than '.
本発明の無菌水の製造方法は、紙・パルグ工業、化学工
業等の膨水の処理、医薬品・食品製造あるいは電子工業
等の工業用水の処理ｔはじめ、各種の除菌、水買改善操
作に適用することができる。The method for producing sterile water of the present invention can be used to treat swelling water in the paper/pulg industry, chemical industry, etc., industrial water treatment in the pharmaceutical/food manufacturing industry, electronic industry, etc., as well as various sterilization and water purchasing improvement operations. Can be applied.
以下に本発明について実施例を示すが、本発明はこれに
Ｌりて制約さ扛るものではない。Examples of the present invention are shown below, but the present invention is not limited to these.
実施例 １
井水を平均孔径ｏ、ｏ６ｉμ町空孔率３５％、換部１９
μｍ、中空率６４ｑｈ、外径１９２μ扉のポリフェニレ
ンスルフィドの微多孔中空繊維モジュール（有効膜面積
１，２が）會用い、中空繊維の外側から内側に向けて圧
力６騰ろがで祐密Ｆ５過した。Ｃ過５時間後の透過水量
は５００ ＩＩが・ｈｒであ九直接検鋭法によ？）測定
した除ｆｉＡ率は１００％であった。Example 1 Well water was used with an average pore diameter of o, o6iμ, porosity of 35%, and exchange part 19.
A polyphenylene sulfide microporous hollow fiber module (effective membrane area 1, 2) with a door diameter of 64 qh and an outer diameter of 192 μm is used, and the pressure is increased by 6 from the outside to the inside of the hollow fiber with a dense F5 filter. did. The amount of permeated water after 5 hours of C is 500 hr. According to the direct probe method? ) The measured anti-fiA rate was 100%.
実施例 ２
実施例１で用いたポリフェニレンスルフィドの数多孔中
空繊維膜ｔ３％過酸化水素水お工ひ１２０℃スチームで
滅菌処理を行なった後、再ひ井水を圧力５１１−ｙ／ｃ
ｒｒＬ”で精密Ｐ遇した。ｅ過５時間後の透過水＊ｔｓ
、５００１７ｍ” −ｈｒ、 除７率は１００％であハ
ｆ過性能は滅劇処坤前と例ら変化がなかりた。Example 2 A multi-porous hollow fiber membrane of polyphenylene sulfide used in Example 1 was sterilized with 3% hydrogen peroxide solution and steam at 120°C, and then the well water was drained again at a pressure of 511-y/c.
Precise treatment with rrL''.e Permeated water after 5 hours *ts
, 50,017 m''-hr, the 7% rate was 100%, and the overperformance was unchanged from before.
実施例 ３
実施例２で用いたポリフェニレンスルフィドの敵多孔中
空繊維Ｍｔ−３％ホルマリン水および１２０℃スチーム
で滅菌処理を行なった後、井水を圧力１「１４−で梢曽
ｆ過し丸。１過５時間後の透過水量は１５００１／ｍ”
・ｈｒで、かり除蘭率は１００％でおり、高圧下におい
ても膜の損傷はなく秀ｆ′Ｌ、ｆＣ濾過性能を保持して
いることがわかった。Example 3 After sterilizing the polyphenylene sulfide porous hollow fiber Mt used in Example 2 with 3% formalin water and 120°C steam, the well water was sterilized at a pressure of 1 to 14 mm. The amount of permeated water after 1 hour and 5 hours is 15001/m”
・The filter removal rate was 100% in hours, and it was found that even under high pressure, there was no damage to the membrane and excellent f'L and fC filtration performance was maintained.
１ｃ埋人 弁理士高橋勝利1c Buried Patent Attorney Katsutoshi Takahashi
Claims (1)
μ、空孔率１０〜８５％の貫通した微多孔を有し膜厚５
〜２００μｍ１ 中空率８〜８５％、外径３０μＷＬ〜
５寵のポリフェニレンスルフィドを主成分とする中空繊
維を用いてＰ遇することを特徴とする無菌水の製造方法
。 ２ 中空繊維が、化を薬剤で洗浄滅菌されたものである
ことを特徴とする特許請求の範囲第１項記載の製造方法
。 ３、中空数８６Ｆ＝が、８０℃以上の熱水または１００
〜１５０℃のスチームで洗浄されたものであることを特
徴とする特許請求の範囲第１項記載の製造方法。[Claims] t When removing bacteria in water, an average pore diameter of 0.01 to 1
μ, has penetrating micropores with a porosity of 10 to 85%, and a film thickness of 5
~200μm1 Hollow rate 8~85%, outer diameter 30μWL~
A method for producing sterile water, which comprises using hollow fibers containing polyphenylene sulfide as a main component. 2. The manufacturing method according to claim 1, wherein the hollow fibers are those that have been washed and sterilized with a chemical. 3. Hollow number 86F = hot water of 80℃ or higher or 100
2. The manufacturing method according to claim 1, wherein the product is washed with steam at a temperature of ~150°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053845A JPS60197288A (en) | 1984-03-21 | 1984-03-21 | Preparation of aseptic water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59053845A JPS60197288A (en) | 1984-03-21 | 1984-03-21 | Preparation of aseptic water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60197288A true JPS60197288A (en) | 1985-10-05 |
Family
ID=12954108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59053845A Pending JPS60197288A (en) | 1984-03-21 | 1984-03-21 | Preparation of aseptic water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60197288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0441340A2 (en) * | 1990-02-07 | 1991-08-14 | House Food Industrial Co., Ltd. | Method for preparing packaged sterilized mineral water and packaged sterilized mineral water |
| US5049276A (en) * | 1988-10-13 | 1991-09-17 | Fuji Photo Film Co., Ltd. | Hollow fiber membrane |
| CN112609254A (en) * | 2020-12-10 | 2021-04-06 | 广东宝泓新材料股份有限公司 | Preparation method of polyphenylene sulfide pulp fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159587A (en) * | 1981-03-27 | 1982-10-01 | Asahi Chem Ind Co Ltd | Sterilization and purification of water |
| JPS57171403A (en) * | 1981-04-15 | 1982-10-22 | Mitsubishi Rayon Co Ltd | Removal of pyrogen in water |
| JPS5867733A (en) * | 1981-10-19 | 1983-04-22 | Dainippon Ink & Chem Inc | Microporous film and its preparation |
-
1984
- 1984-03-21 JP JP59053845A patent/JPS60197288A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159587A (en) * | 1981-03-27 | 1982-10-01 | Asahi Chem Ind Co Ltd | Sterilization and purification of water |
| JPS57171403A (en) * | 1981-04-15 | 1982-10-22 | Mitsubishi Rayon Co Ltd | Removal of pyrogen in water |
| JPS5867733A (en) * | 1981-10-19 | 1983-04-22 | Dainippon Ink & Chem Inc | Microporous film and its preparation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049276A (en) * | 1988-10-13 | 1991-09-17 | Fuji Photo Film Co., Ltd. | Hollow fiber membrane |
| EP0441340A2 (en) * | 1990-02-07 | 1991-08-14 | House Food Industrial Co., Ltd. | Method for preparing packaged sterilized mineral water and packaged sterilized mineral water |
| EP0441340A3 (en) * | 1990-02-07 | 1991-11-27 | House Food Industrial Co., Ltd. | Method for preparing packaged sterilized mineral water, method for producing sterilized container for packaging the same and packaged sterilized mineral water |
| US5152900A (en) * | 1990-02-07 | 1992-10-06 | House Food Industrial Co., Ltd. | Method for preparing packaged sterilized mineral water, method for producing sterilized container for packaging the same and packaged sterilized mineral water |
| CN112609254A (en) * | 2020-12-10 | 2021-04-06 | 广东宝泓新材料股份有限公司 | Preparation method of polyphenylene sulfide pulp fiber |
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