CH613215A5 - Process for the preparation of a stable water-in-oil emulsion of a polymer dissolved in the aqueous phase - Google Patents

Process for the preparation of a stable water-in-oil emulsion of a polymer dissolved in the aqueous phase

Info

Publication number
CH613215A5
CH613215A5 CH1435674A CH1435674A CH613215A5 CH 613215 A5 CH613215 A5 CH 613215A5 CH 1435674 A CH1435674 A CH 1435674A CH 1435674 A CH1435674 A CH 1435674A CH 613215 A5 CH613215 A5 CH 613215A5
Authority
CH
Switzerland
Prior art keywords
preparation
water
aqueous phase
oil emulsion
phase
Prior art date
Application number
CH1435674A
Inventor
Wilfried Keller
Friedhelm Mueller
Original Assignee
Bayer 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 Bayer Ag filed Critical Bayer Ag
Publication of CH613215A5 publication Critical patent/CH613215A5/en

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
    • C08F2/00—Processes of polymerisation
    • C08F2/32—Polymerisation in water-in-oil emulsions
    • 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
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/52—Amides or imides
    • C08F20/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
    • C08F20/56—Acrylamide; Methacrylamide

Abstract

alpha ,ss-monoolefinically unsaturated monomers which are water-soluble or are capable of forming water-soluble salts are converted into the state of a solution in the water phase of a water-in-oil emulsion. Their polymerisation is carried out in the W/O emulsion with the aid of photoinitiators which are soluble in the water phase or oil phase and with the aid of UV light. In this way, stable W/O emulsions having a high content of extremely high-molecular-weight polymers dissolved in the aqueous phase are obtainable. The preparation can be carried out either batchwise or continuously. The process is suitable for the preparation of polymers which are employed as retention agents in papermaking or as flocculants in effluent treatment.
CH1435674A 1973-10-27 1974-10-25 Process for the preparation of a stable water-in-oil emulsion of a polymer dissolved in the aqueous phase CH613215A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2354006A DE2354006B2 (en) 1973-10-27 1973-10-27 Process for the production of stable water-in-oil emulsions from water-soluble polymers

Publications (1)

Publication Number Publication Date
CH613215A5 true CH613215A5 (en) 1979-09-14

Family

ID=5896660

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1435674A CH613215A5 (en) 1973-10-27 1974-10-25 Process for the preparation of a stable water-in-oil emulsion of a polymer dissolved in the aqueous phase

Country Status (14)

Country Link
JP (1) JPS5074689A (en)
AT (1) AT336273B (en)
BE (1) BE821480A (en)
CA (1) CA1037899A (en)
CH (1) CH613215A5 (en)
DE (1) DE2354006B2 (en)
ES (1) ES431369A1 (en)
FI (1) FI58780C (en)
FR (1) FR2249095B1 (en)
GB (1) GB1478987A (en)
IT (1) IT1021934B (en)
NL (1) NL7413944A (en)
NO (1) NO144349C (en)
SE (1) SE410464B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507606B1 (en) * 1981-06-12 1985-11-15 Hoechst France NEW STABLE DISPERSIONS, WATER IN OIL OF WATER-SOLUBLE CATIONIC POLYMERS BASED ON SALIFIED OR QUATERNIZED DIMETHYLAMINOETHYL ACRYLATE, THEIR MANUFACTURING PROCESS AND THEIR APPLICATION AS FLOCCULANTS
DE3207113A1 (en) * 1982-02-27 1983-09-08 Röhm GmbH, 6100 Darmstadt METHOD FOR PRODUCING A W / OE EMULSION OF A WATER-SOLUBLE POLYMER
FR2524895A1 (en) * 1982-04-09 1983-10-14 Inst Francais Du Petrole PROCESS FOR THE PREPARATION OF CONTINUOUS OILY MICROLATEX BY MICRO-EMULSION POLYMERIZATION OF THE WATER TYPE IN OIL OF A WATER SOLUBLE MONOMER, MICROLATEX OBTAINED AND THEIR USE IN ASSISTED OIL RECOVERY
NO165879C (en) * 1984-06-07 1991-04-24 Inst Francais Du Petrole PROCEDURE FOR PREPARING AN INVERSE, STABLE MICROLATEKS.
FR2640956B1 (en) * 1988-12-28 1991-09-13 Norsolor Sa
RU2439082C2 (en) 2006-07-04 2012-01-10 Циба Холдинг Инк. Concentrated forms of ready water-based photoinitiators obtained via hetero-phase polymerisation
US20110160689A1 (en) 2009-12-30 2011-06-30 Steven Ray Merrigan High internal phase emulsion comprising photoinitiator
EP3027662A1 (en) * 2013-07-31 2016-06-08 Basf Se Reverse-phase polymerisation process
US11041037B2 (en) * 2018-10-01 2021-06-22 Solenis Technologies, L.P. Ultra violet assisted photo initiated free radical polymerization
CN114989350B (en) * 2022-07-06 2023-09-05 安徽天润化学工业股份有限公司 Method for preparing polyacrylamide nano microsphere by photoinitiation

Also Published As

Publication number Publication date
JPS5074689A (en) 1975-06-19
AT336273B (en) 1977-04-25
FI311874A (en) 1975-04-28
NL7413944A (en) 1975-04-29
DE2354006A1 (en) 1975-05-07
NO144349B (en) 1981-05-04
BE821480A (en) 1975-04-25
FI58780C (en) 1981-04-10
SE7413410L (en) 1975-04-28
FR2249095A1 (en) 1975-05-23
NO144349C (en) 1981-08-12
GB1478987A (en) 1977-07-06
ES431369A1 (en) 1976-11-01
FI58780B (en) 1980-12-31
DE2354006B2 (en) 1979-08-16
SE410464B (en) 1979-10-15
IT1021934B (en) 1978-02-20
ATA860274A (en) 1976-08-15
NO743635L (en) 1975-05-26
CA1037899A (en) 1978-09-05
FR2249095B1 (en) 1978-04-28

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