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EP0032757A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Aqueous peroxide emulsion and its use in suspension (co)polymerization reactions

Assignee: Akzo NV
•
Filing: 1981-01-06
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Granted: —
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Expires: 2001-01-06
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Abstract

Abstract The present invention relates to an aqueous peroxide emulsion comprising: a) an organic peroxide which is liquid at -5 DEG C; b) a surfactant and/or a protective colloid; c) an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms. The emulsion generally contains 20-60% by weight of peroxide, 0,01-10% by weight of surfactant and/or protective colloid and must contain 2-20% by weight of the alcohol. The emulsions can be transported while in the liquid state at a temperature of -10 DEG to -25 DEG C, there being hardly any decrease in active oxygen content. When the emulsion is used in (co)polymerization reactions, the results obtained are the same as when use is made of emulsions which do not contain the above-mentioned alcohols.

Inventors

  • 👤 Reinder Torenbeek
  • 👤 Willem Franciscus Verhelst

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 17:13
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/18; C08F2/22; C08F2/24; C08F2/30

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 43 words
An aqueous peroxide emulsion comprising an organic peroxide which is liquid at -5°C, a surfactant and/or a protective colloid, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 2
Dependent Claim 43 words
An aqueous peroxide emulsion comprising an organic peroxide which is liquid at -5°C, a surfactant and/or a protective colloid, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 3
Dependent Claim 66 words
An aqueous peroxide emulsion comprising a peroxydicarbonate which is liquid at -5°C and has the general formula : wherein R 1 and R 2 represent substituted or unsubstituted alkyl groups having 3 to 8 carbon atoms, a surfactant and/or a protective colloid, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 4
Dependent Claim 66 words
An aqueous peroxide emulsion comprising a peroxydicarbonate which is liquid at -5°C and has the general formula : wherein R 1 and R 2 represent substituted or unsubstituted alkyl groups having 3 to 8 carbon atoms, a surfactant and/or a protective colloid, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 5
Dependent Claim 31 words
An aqueous peroxide emulsion comprising di-2-ethylhexyl peroxydicarbonate, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 6
Dependent Claim 31 words
An aqueous peroxide emulsion comprising di-2-ethylhexyl peroxydicarbonate, characterized in that the emulsion contains 2-20% by weight of an alkanol having 1-4 carbon atoms and/or an alkane diol having 2-4 carbon atoms.
Claim 7
Dependent Claim 21 words
An aqueous peroxide emulsion according to claim 1, 2 or 3, characterized in that the emulsion contains methanol as an alkanol.
Claim 8
Dependent Claim 41 words
A process for the suspension (co)polymerization of an ethylenically unsaturated compound in the presence of an organic peroxide, characterized in that the organic peroxide is employed in the form of the aqueous emulsion according to any one of the preceding claims.
Claim 9
Dependent Claim 39 words
A process for the suspension polymerization of vinyl chloride in the presence of an organic peroxide, characterized in that the organic peroxide is used in the form of the aqueous emulsion according to claim 1, 2, 3 or 4.

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