IT1263966B - Processo di candeggio termico per materiali in fibra fluorocarburica non contaminanti - Google Patents

Processo di candeggio termico per materiali in fibra fluorocarburica non contaminanti

Info

Publication number
IT1263966B
IT1263966B ITMI930359A ITMI930359A IT1263966B IT 1263966 B IT1263966 B IT 1263966B IT MI930359 A ITMI930359 A IT MI930359A IT MI930359 A ITMI930359 A IT MI930359A IT 1263966 B IT1263966 B IT 1263966B
Authority
IT
Italy
Prior art keywords
contaminating
bleaching process
fiber materials
thermal bleaching
fluorocarbon
Prior art date
Application number
ITMI930359A
Other languages
English (en)
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 filed Critical
Publication of ITMI930359A0 publication Critical patent/ITMI930359A0/it
Publication of ITMI930359A1 publication Critical patent/ITMI930359A1/it
Application granted granted Critical
Publication of IT1263966B publication Critical patent/IT1263966B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0457—Specific fire retardant or heat resistant properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08—Special characteristics of binders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Un processo per la riduzione del livello di estraibili da un materiale poroso, imbianchirlo e renderlo non contaminante, dove il materiale poroso è composto da fibre fluorocarburiche legate e da un legante chimico-fluorocarburico. Il processo di candeggio termico include le operazioni di esporre il materiale, per almeno varie ore, ad una atmosfera contenente ossigeno vigorosamente agitata mantenuta ad una temperatura di almeno 204°C.
ITMI930359A 1992-06-30 1993-02-24 Processo di candeggio termico per materiali in fibra fluorocarburica non contaminanti IT1263966B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/906,366 US5277943A (en) 1992-06-30 1992-06-30 Thermal bleaching process for non-contaminating fluorocarbon fiber media

Publications (3)

Publication Number Publication Date
ITMI930359A0 ITMI930359A0 (it) 1993-02-24
ITMI930359A1 ITMI930359A1 (it) 1994-08-24
IT1263966B true IT1263966B (it) 1996-09-05

Family

ID=25422320

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI930359A IT1263966B (it) 1992-06-30 1993-02-24 Processo di candeggio termico per materiali in fibra fluorocarburica non contaminanti

Country Status (7)

Country Link
US (1) US5277943A (it)
JP (1) JP2594739B2 (it)
CA (1) CA2081508A1 (it)
DE (1) DE4309540A1 (it)
FR (1) FR2692916B1 (it)
GB (1) GB2268092B (it)
IT (1) IT1263966B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1255935B (it) * 1992-10-29 1995-11-17 Ausimont Spa Filato multifilamento di polimeri a base di tetrafluoroetilene e relativo processo di preparazione.
AU2004202645B1 (en) * 2004-06-18 2005-07-07 Gcc Ip Pty Limited A Cover Adapted For Protecting a Photosensitve Member of a Process Cartridge
US9175115B2 (en) * 2012-05-09 2015-11-03 The Chemours Company Fc, Llc Fluoropolymer resin treatment employing heating and oxygen source to reduce discoloration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960651A (en) * 1963-10-14 1976-06-01 Daikin Kogyo Co., Ltd. Reinforced air-pervious polytetrafluorothylene sheet
US4465797A (en) * 1983-07-15 1984-08-14 Shell Oil Company Reinforced polymer compositions and their preparation
US4716074A (en) * 1986-02-10 1987-12-29 Pall Corporation Porous fibrous fluorocarbon structures

Also Published As

Publication number Publication date
ITMI930359A1 (it) 1994-08-24
DE4309540A1 (de) 1994-01-05
US5277943A (en) 1994-01-11
JPH0665857A (ja) 1994-03-08
GB9313529D0 (en) 1993-08-11
GB2268092B (en) 1995-11-29
CA2081508A1 (en) 1993-12-31
GB2268092A (en) 1994-01-05
FR2692916B1 (fr) 1996-10-25
FR2692916A1 (fr) 1993-12-31
ITMI930359A0 (it) 1993-02-24
JP2594739B2 (ja) 1997-03-26

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970227