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GB1512071A - Process for concentrating latices by ultra-filtration - Google Patents

Process for concentrating latices by ultra-filtration

Info

Publication number
GB1512071A
GB1512071A GB17576/75A GB1757675A GB1512071A GB 1512071 A GB1512071 A GB 1512071A GB 17576/75 A GB17576/75 A GB 17576/75A GB 1757675 A GB1757675 A GB 1757675A GB 1512071 A GB1512071 A GB 1512071A
Authority
GB
United Kingdom
Prior art keywords
membrane
ultrafiltration
latices
vinyl chloride
ultra
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.)
Expired
Application number
GB17576/75A
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 GB1512071A publication Critical patent/GB1512071A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F6/00—Post-polymerisation treatments
    • C08F6/14—Treatment of polymer emulsions
    • C08F6/20—Concentration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/28—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling by soaking or impregnating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Latices obtainable by emulsion polymerisation of vinyl chloride, optionally with other copolymerisable monomers, are concentrated. Ultrafiltration through a semipermeable membrane made from a synthetic polymer removes water and low-molecular-weight substances dissolved therein from the latex. The membrane should retain substances from a molecular weight of 5,000 to 100,000 and is treated before the ultrafiltration with an aqueous emulsifier solution. This considerably reduces the formation of deposits on the membrane during the ultrafiltration. The pretreatment of the membrane is carried out using emulsifiers as used for the emulsion polymerisation of vinyl chloride.
GB17576/75A 1974-04-30 1975-04-28 Process for concentrating latices by ultra-filtration Expired GB1512071A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2420922A DE2420922C3 (en) 1974-04-30 1974-04-30 Process for concentrating latices

Publications (1)

Publication Number Publication Date
GB1512071A true GB1512071A (en) 1978-05-24

Family

ID=5914372

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17576/75A Expired GB1512071A (en) 1974-04-30 1975-04-28 Process for concentrating latices by ultra-filtration

Country Status (14)

Country Link
JP (1) JPS5117940A (en)
AT (1) AT342865B (en)
BE (1) BE828619A (en)
CA (1) CA1051137A (en)
CH (1) CH613463A5 (en)
DE (1) DE2420922C3 (en)
ES (1) ES436915A1 (en)
FR (1) FR2269542B1 (en)
GB (1) GB1512071A (en)
HU (1) HU171910B (en)
IT (1) IT1037685B (en)
NL (1) NL166032C (en)
SE (1) SE406592B (en)
ZA (1) ZA752749B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160726A (en) * 1976-05-07 1979-07-10 Abcor, Inc. Ultrafiltration process for the concentration of polymeric latices
FR2387999A1 (en) 1977-04-22 1978-11-17 Rhone Poulenc Ind BINDER FOR THE MANUFACTURE OF NEEDLE FLOORING
LU81905A1 (en) * 1979-11-16 1981-06-04 Arbed SCREEN CHANGER FOR CONTINUOUS CASTING PLANTS
JPS60243105A (en) * 1984-05-17 1985-12-03 Osaka Soda Co Ltd Preparation of diallyl phthalate based polymer

Also Published As

Publication number Publication date
DE2420922B2 (en) 1979-07-05
ATA329975A (en) 1977-08-15
IT1037685B (en) 1979-11-20
HU171910B (en) 1978-04-28
FR2269542B1 (en) 1978-10-13
ZA752749B (en) 1976-05-26
JPS5117940A (en) 1976-02-13
SE7505015L (en) 1975-10-31
NL166032B (en) 1981-01-15
AT342865B (en) 1978-04-25
BE828619A (en) 1975-10-30
DE2420922A1 (en) 1975-11-20
ES436915A1 (en) 1977-04-16
FR2269542A1 (en) 1975-11-28
SE406592B (en) 1979-02-19
CA1051137A (en) 1979-03-20
NL166032C (en) 1981-06-15
DE2420922C3 (en) 1980-03-13
NL7504955A (en) 1975-11-03
CH613463A5 (en) 1979-09-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee