FR2373566A1 - PROCESS FOR PREPARING POLYACRYLONITRILS OF LOW MOLECULAR WEIGHT - Google Patents

PROCESS FOR PREPARING POLYACRYLONITRILS OF LOW MOLECULAR WEIGHT

Info

Publication number
FR2373566A1
FR2373566A1 FR7736818A FR7736818A FR2373566A1 FR 2373566 A1 FR2373566 A1 FR 2373566A1 FR 7736818 A FR7736818 A FR 7736818A FR 7736818 A FR7736818 A FR 7736818A FR 2373566 A1 FR2373566 A1 FR 2373566A1
Authority
FR
France
Prior art keywords
molecular weight
low molecular
preparing
polyacrylonitrils
hydroxylammonium
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
FR7736818A
Other languages
French (fr)
Other versions
FR2373566B3 (en
Inventor
Hermann Weber
Klaus Sommer
Friedrich Wahl
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.)
BK Ladenburg GmbH
Original Assignee
Benckiser Knapsack GmbH
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 Benckiser Knapsack GmbH filed Critical Benckiser Knapsack GmbH
Publication of FR2373566A1 publication Critical patent/FR2373566A1/en
Application granted granted Critical
Publication of FR2373566B3 publication Critical patent/FR2373566B3/fr
Granted 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
    • 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
    • C08F20/42—Nitriles
    • C08F20/44—Acrylonitrile

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Procédé de préparation de polyacrylonitriles à poids moléculaires peu élevés par polymérisation de l'acrylonitrile en présence d'un système redox comme agent d'amorçage de la polymérisation. Il consiste à opérer à 40-95 degrés C dans un mélange solvant-eau, en présence d'un sel d'hydroxylammonium ou d'hydrazine comme réducteur. Les produits obtenus sont utilisables après saponification comme dispersants.Process for preparing low molecular weight polyacrylonitriles by polymerizing acrylonitrile in the presence of a redox system as a polymerization initiator. It consists of operating at 40-95 degrees C in a solvent-water mixture, in the presence of a hydroxylammonium or hydrazine salt as a reducing agent. The products obtained can be used after saponification as dispersants.

FR7736818A 1976-12-09 1977-12-07 PROCESS FOR PREPARING POLYACRYLONITRILS OF LOW MOLECULAR WEIGHT Granted FR2373566A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762655714 DE2655714B2 (en) 1976-12-09 1976-12-09 Process for the production of low molecular weight polyacrylonitriles

Publications (2)

Publication Number Publication Date
FR2373566A1 true FR2373566A1 (en) 1978-07-07
FR2373566B3 FR2373566B3 (en) 1980-08-08

Family

ID=5995033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7736818A Granted FR2373566A1 (en) 1976-12-09 1977-12-07 PROCESS FOR PREPARING POLYACRYLONITRILS OF LOW MOLECULAR WEIGHT

Country Status (8)

Country Link
AT (1) AT361709B (en)
BE (1) BE860352A (en)
DE (1) DE2655714B2 (en)
DK (1) DK548677A (en)
FR (1) FR2373566A1 (en)
GB (1) GB1551021A (en)
IT (1) IT1085042B (en)
NL (1) NL7713394A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603677A2 (en) * 1992-12-23 1994-06-29 Wolff Walsrode Aktiengesellschaft Process for the manufacture of low molecular weight polymers of acrylonitrile and the use thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603677A2 (en) * 1992-12-23 1994-06-29 Wolff Walsrode Aktiengesellschaft Process for the manufacture of low molecular weight polymers of acrylonitrile and the use thereof
EP0603677A3 (en) * 1992-12-23 1994-08-24 Wolff Walsrode Ag Process for the manufacture of low molecular weight polymers of acrylonitrile and the use thereof.
US5393845A (en) * 1992-12-23 1995-02-28 Wolff Walsrode Ag Process for the production of low molecular weight acrylonitrile polymers and their use

Also Published As

Publication number Publication date
GB1551021A (en) 1979-08-22
FR2373566B3 (en) 1980-08-08
NL7713394A (en) 1978-06-13
BE860352A (en) 1978-02-15
AT361709B (en) 1981-03-25
DE2655714A1 (en) 1978-06-22
DE2655714B2 (en) 1979-10-25
ATA878277A (en) 1980-08-15
IT1085042B (en) 1985-05-28
DK548677A (en) 1978-06-10

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Legal Events

Date Code Title Description
ST Notification of lapse