EP1035157A4 - Highly clean porous polyvinyl acetal resin, method for preparing the same, and method for storing the same - Google Patents

Highly clean porous polyvinyl acetal resin, method for preparing the same, and method for storing the same

Info

Publication number
EP1035157A4
EP1035157A4 EP97913421A EP97913421A EP1035157A4 EP 1035157 A4 EP1035157 A4 EP 1035157A4 EP 97913421 A EP97913421 A EP 97913421A EP 97913421 A EP97913421 A EP 97913421A EP 1035157 A4 EP1035157 A4 EP 1035157A4
Authority
EP
European Patent Office
Prior art keywords
same
polyvinyl acetal
acetal resin
preparing
storing
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.)
Granted
Application number
EP97913421A
Other languages
German (de)
French (fr)
Other versions
EP1035157B1 (en
EP1035157A1 (en
Inventor
Jun Inoue
Yasuoki Sasaki
Megumi Tanno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aion Co Ltd
Original Assignee
Aion Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Aion Co Ltd filed Critical Aion Co Ltd
Publication of EP1035157A1 publication Critical patent/EP1035157A1/en
Publication of EP1035157A4 publication Critical patent/EP1035157A4/en
Application granted granted Critical
Publication of EP1035157B1 publication Critical patent/EP1035157B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges

Landscapes

  • Packages (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A porous polyvinyl acetal resin which has a cleanness of not more than 5 ppm in terms of COD, an electric conductivity of not more than 5 νS/cm, and a number of particles having a size of not more than 2.5 νm of 50,000 cc. The porous resin, when used in the step of cleaning within a clean room and other steps, can shorten or dispense with pretreatments required in the prior art, for example, a treatment for sufficiently pre-washing the porous resin for preventing the elution of impurities.
EP97913421A 1997-11-21 1997-11-21 Highly clean porous polyvinyl acetal resin, method for preparing the same, and method for storing the same Expired - Lifetime EP1035157B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/004249 WO1999027003A1 (en) 1997-11-21 1997-11-21 Highly clean porous polyvinyl acetal resin, method for preparing the same, and method for storing the same

Publications (3)

Publication Number Publication Date
EP1035157A1 EP1035157A1 (en) 2000-09-13
EP1035157A4 true EP1035157A4 (en) 2001-02-07
EP1035157B1 EP1035157B1 (en) 2006-03-08

Family

ID=14181510

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97913421A Expired - Lifetime EP1035157B1 (en) 1997-11-21 1997-11-21 Highly clean porous polyvinyl acetal resin, method for preparing the same, and method for storing the same

Country Status (4)

Country Link
EP (1) EP1035157B1 (en)
AU (1) AU5066398A (en)
DE (1) DE69735412T2 (en)
WO (1) WO1999027003A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566911A (en) * 1982-07-05 1986-01-28 Kanebo Limited Method for cleaning article by scrubbing with cleaning roll
US5340407A (en) * 1988-02-08 1994-08-23 Petroferm Inc. Process of removing soldering flux and/or adhesive tape residue from a substrate
JPH11152367A (en) * 1997-11-20 1999-06-08 Kanebo Ltd High-cleanness polyvinyl acetal resin porous body, production thereof, and storing method thereof
EP0937509A1 (en) * 1996-11-08 1999-08-25 Kanebo Ltd. Sponge roller for cleaning
JP2000159921A (en) * 1998-11-26 2000-06-13 Kanebo Ltd Polyvinyl acetal-based sponge, and production of the polyvinyl acetal-based sponge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06166713A (en) * 1992-08-19 1994-06-14 Daiwa Kagaku Kogyo Kk Production of polyvinyl acetal-based porous material having antimicrobial and mildew-proofing property

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566911A (en) * 1982-07-05 1986-01-28 Kanebo Limited Method for cleaning article by scrubbing with cleaning roll
US5340407A (en) * 1988-02-08 1994-08-23 Petroferm Inc. Process of removing soldering flux and/or adhesive tape residue from a substrate
EP0937509A1 (en) * 1996-11-08 1999-08-25 Kanebo Ltd. Sponge roller for cleaning
JPH11152367A (en) * 1997-11-20 1999-06-08 Kanebo Ltd High-cleanness polyvinyl acetal resin porous body, production thereof, and storing method thereof
JP2000159921A (en) * 1998-11-26 2000-06-13 Kanebo Ltd Polyvinyl acetal-based sponge, and production of the polyvinyl acetal-based sponge

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199933, Derwent World Patents Index; Class A14, AN 1999-389450, XP002155469 *
DATABASE WPI Section Ch Week 200046, Derwent World Patents Index; Class A14, AN 2000-507828, XP002155470 *
See also references of WO9927003A1 *

Also Published As

Publication number Publication date
EP1035157B1 (en) 2006-03-08
DE69735412T2 (en) 2006-08-10
WO1999027003A1 (en) 1999-06-03
EP1035157A1 (en) 2000-09-13
AU5066398A (en) 1999-06-15
DE69735412D1 (en) 2006-05-04

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