FR2376883A1 - Procede de separation d'alcool polyvinylique de solutions aqueuses - Google Patents

Procede de separation d'alcool polyvinylique de solutions aqueuses

Info

Publication number
FR2376883A1
FR2376883A1 FR7800393A FR7800393A FR2376883A1 FR 2376883 A1 FR2376883 A1 FR 2376883A1 FR 7800393 A FR7800393 A FR 7800393A FR 7800393 A FR7800393 A FR 7800393A FR 2376883 A1 FR2376883 A1 FR 2376883A1
Authority
FR
France
Prior art keywords
polyvinyl alcohol
solution
aqueous solutions
earth metal
metal hydroxide
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
FR7800393A
Other languages
English (en)
Other versions
FR2376883B1 (fr
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of FR2376883A1 publication Critical patent/FR2376883A1/fr
Application granted granted Critical
Publication of FR2376883B1 publication Critical patent/FR2376883B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2329/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
    • C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
    • C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Procédé de séparation d'alcool polyvinylique d'une solution aqueuse, par précipitation de l'alcool polyvinylique dans un milieu alcalin en présence d'ions d'orthoborate et d'ions de métaux alcalino-terreux. Ou bien on ajoute d'abord une solution saturée d'acide borique à la solution de l'alcool polyvinylique et on porte ensuite celle-ci à un pH supérieur à 8 à l'aide d'une solution d'hydroxyde de métal alcalino-terreux ou bien on porte d'abord la solution de l'alcool polyvinylique à pH 11 par addition d'une solution d'hydroxyde de métal alcalino-terreux et ensuite on ajoute une solution d'acide borique neutralisée à l'aide d'un hydroxyde de métal alcalino-terreux, après quoi on sépare l'alcool polyvinylique qui a précipité. Application à l'épuration d'eaux usées.
FR7800393A 1977-01-07 1978-01-09 Procede de separation d'alcool polyvinylique de solutions aqueuses Granted FR2376883A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772700361 DE2700361A1 (de) 1977-01-07 1977-01-07 Verfahren zur abtrennung von polyvinylalkohol aus waessrigen loesungen

Publications (2)

Publication Number Publication Date
FR2376883A1 true FR2376883A1 (fr) 1978-08-04
FR2376883B1 FR2376883B1 (fr) 1983-11-18

Family

ID=5998188

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800393A Granted FR2376883A1 (fr) 1977-01-07 1978-01-09 Procede de separation d'alcool polyvinylique de solutions aqueuses

Country Status (12)

Country Link
US (1) US4166033A (fr)
BE (1) BE862753A (fr)
CA (1) CA1121549A (fr)
CH (1) CH634801A5 (fr)
DE (1) DE2700361A1 (fr)
ES (1) ES465615A1 (fr)
FI (1) FI780030A7 (fr)
FR (1) FR2376883A1 (fr)
GB (1) GB1577402A (fr)
NL (1) NL7800226A (fr)
NO (1) NO780057L (fr)
SE (1) SE422806B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141777A1 (de) * 1991-12-18 1993-06-24 Hoechst Ag Verfahren zur faellung waessriger, polyvinylalkoholhaltiger kunststoffdispersionen
KR100783754B1 (ko) 2006-12-14 2007-12-07 (주) 테크윈 Ｐｖａ가 포함된 폐수의 화학 및 생물학적 처리방법 및 그장치
CN114394693A (zh) * 2022-01-22 2022-04-26 安徽科技学院 一种工业含油废水的澄清处理方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2309479A1 (de) * 1973-02-26 1974-08-29 Passavant Werke Rechenreiniger fuer in abwassergerinnen od. dgl. angeordnete rechen mit einer auf einer geschlossenen bahn gefuehrten harke
DE2557443A1 (de) * 1974-12-20 1976-07-01 Shikibo Ltd Verfahren zur abtrennung von polyvinylalkohol aus loesungen und dafuer geeignete vorrichtung
FR2312460A1 (fr) * 1975-05-28 1976-12-24 Sando Iron Works Co Procede de traitement d'eaux residuaires contenant de l'alcool polyvinylique et nouveaux produits ainsi obtenus
FR2313404A1 (fr) * 1975-06-04 1976-12-31 Sando Iron Works Co Procede de recuperation d'alcool polyvinylique en solution aqueuse, dispositif utilise dans ce but et nouveau produit ainsi obtenu

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761406A (en) * 1971-01-08 1973-09-25 Grace W R & Co Flocculation and demulsification using cationic polyvinyl alcohols

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2309479A1 (de) * 1973-02-26 1974-08-29 Passavant Werke Rechenreiniger fuer in abwassergerinnen od. dgl. angeordnete rechen mit einer auf einer geschlossenen bahn gefuehrten harke
DE2557443A1 (de) * 1974-12-20 1976-07-01 Shikibo Ltd Verfahren zur abtrennung von polyvinylalkohol aus loesungen und dafuer geeignete vorrichtung
FR2312460A1 (fr) * 1975-05-28 1976-12-24 Sando Iron Works Co Procede de traitement d'eaux residuaires contenant de l'alcool polyvinylique et nouveaux produits ainsi obtenus
FR2313404A1 (fr) * 1975-06-04 1976-12-31 Sando Iron Works Co Procede de recuperation d'alcool polyvinylique en solution aqueuse, dispositif utilise dans ce but et nouveau produit ainsi obtenu

Also Published As

Publication number Publication date
BE862753A (fr) 1978-07-10
SE422806B (sv) 1982-03-29
NL7800226A (nl) 1978-07-11
US4166033A (en) 1979-08-28
FI780030A7 (fi) 1978-07-08
NO780057L (no) 1978-07-10
DE2700361A1 (de) 1978-07-13
SE7800120L (sv) 1978-07-08
GB1577402A (en) 1980-10-22
CA1121549A (fr) 1982-04-06
CH634801A5 (de) 1983-02-28
ES465615A1 (es) 1978-09-16
FR2376883B1 (fr) 1983-11-18

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Legal Events

Date Code Title Description
ST Notification of lapse