EP1622945A1 - Systemes d'initiateurs ii - Google Patents

Systemes d'initiateurs ii

Info

Publication number
EP1622945A1
EP1622945A1 EP04730498A EP04730498A EP1622945A1 EP 1622945 A1 EP1622945 A1 EP 1622945A1 EP 04730498 A EP04730498 A EP 04730498A EP 04730498 A EP04730498 A EP 04730498A EP 1622945 A1 EP1622945 A1 EP 1622945A1
Authority
EP
European Patent Office
Prior art keywords
starter system
amounts
monomers
component
polymerization
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.)
Withdrawn
Application number
EP04730498A
Other languages
German (de)
English (en)
Inventor
Ludwig Schieferstein
William Lamarca
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.)
Cognis IP Management GmbH
Original Assignee
Cognis Deutschland GmbH and Co KG
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 Cognis Deutschland GmbH and Co KG filed Critical Cognis Deutschland GmbH and Co KG
Publication of EP1622945A1 publication Critical patent/EP1622945A1/fr
Withdrawn legal-status Critical Current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
    • C08F4/00—Polymerisation catalysts
    • C08F4/40—Redox systems

Definitions

  • the present invention relates to a starter system for the polymerization of unsaturated monomers in non-aqueous solvents, preferably of acrylates and their derivatives. Furthermore, a polymerization process is described and the use of certain mixtures as starter systems is described.
  • the polymerization of unsaturated monomers is one of the basic types of reactions in industrial chemistry and is used to produce a large number of intermediate and end products.
  • the monomers are dissolved in a suitable solvent and, in the case of radical reactions, started with appropriate radical initiators.
  • Polymerization reactions are also well known in the non-aqueous systems field.
  • a temperature problem often arises during the polymerization.
  • the exothermic nature of the polymerization reaction is sufficient to heat the system to 250 ° C. and higher.
  • Even with relatively heavy stearyl acrylate, heating to more than 50 ° C is caused.
  • the high temperature which often occurs in batches and cannot be removed sufficiently quickly by external cooling, leads to an undesirably high boiling point of the reaction mixture. Due to the uneven reaction conditions, the reproducibility of the polymer production is reduced, with different monomers often being co-polymerized.
  • the monomer has been continuously replenished in practice and the reaction temperature has been controlled at the same time.
  • the present invention therefore relates to a starter system for the polymerization of unsaturated monomers in non-aqueous media, where the starter systems must contain at least component a), a peroxide compound in amounts of 0.02 to 7% by weight, b) organic Hydrazine derivatives in amounts of 0.005 to 3 wt .-% and finally c) transition metal ions in amounts of 2 to 1000 ppm.
  • the quantities given relate to the overall system consisting of monomer, solvent and starter system.
  • EP 0 550 087 which describes foamable and curable polyester compositions which, in addition to a liquid unsaturated polyester resin, also contain a monosubstituted sulfonylhydrazine as blowing agent for the resin and at least one organic metal salt must contain primary promoter for the organic peroxide curing agent.
  • EP-A-0 550 087 does not start from low molecular weight monomers, but instead uses an unsaturated liquid polyester resin, that is to say already a polymer, for the reaction. Furthermore, the document does not disclose solution polymerization in which the monomers are first dissolved and then reacted.
  • the starter system according to the invention first of all contains a peroxide compound a) which releases radicals during the reaction which, in a known manner, initiate the actual polymerization reaction.
  • Suitable peroxides are, for example, saturated aliphatic hydroperoxides, olefinic hydroperoxides, arylalkyl hydroperoxides, hydroperoxides of cycloaliphatic and hetrocyclic organic molecules, dialkyl peroxides, hydroxyalkyl peroxides, polyalkylene peroxides, peroxyacetals,
  • Methyl hydroperoxides ethyl hydroperoxide, ter.-butyl hydroperoxides, dimers Benzaldehyde peroxides, dimeric benzophenone peroxides, dimeric acetone peroxide and methyl ethyl ketone hydroperoxide.
  • methyl ethyl ketone peroxide and especially cumene hydroperoxide are particularly preferred as component a).
  • the peroxide compounds a) are present in amounts of 0.02 to 7% by weight, based on the total batch, amounts in the range of 0.1 to 1% by weight preferably being selected.
  • peroxides listed above are generally not available as pure substances but are commercially available in different formulations. They are preferably dissolved in suitable organic solvents and then come onto the market as more or less concentrated agents.
  • the peroxides which are preferably used are alkyloxy peroxides, as described above, and in particular cumene hydroperoxide, preference being given to those substances which can generally be activated at 15 ° C., but preferably at 20 to 50 ° C., and thus start the actual polymerization reaction ,
  • the starter system necessarily contains an organic hydrazine derivative in amounts of 0.005 to 3% by weight.
  • Component b) serves as a polymerization accelerator, preference being given to organic hydrazine derivatives
  • R is alkyl, cycloalkyl, aryl, alkenyl, cycloalkenyl and R 2 is hydrogen alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, alkoxy, aryloxy, carbonyl, an amino group or an aryl radical substituted with sulfur.
  • R is a hydrocarbyl radical selected from the groups CC 12 alkyl, C 5 -C 6, cycloalkyl, G7 0 arylalkyl phenyl, naphthyl or substituted phenyl
  • Sulfonyl hydrazides in which R represents a C 2 -C alkyl, benzyl or phenyl radical, optionally substituted by chlorine or C 1 -C 12 alkyl, are particularly advantageous.
  • Suitable sulfonyl hydrazides are methanesulfonyl hydrazide, methanesulfonyl hydrazide, propanesulfonyl hydrazide, N-butanesulfonyl hydrazide, sec.
  • Component b) is preferably present in the starter system in amounts of 0.03 to 0.3% by weight.
  • transition metal ions are used in amounts of 1 to 1000 ppm.
  • Preferred ions are derived from copper, vanadium, molybdenum, cobalt or iron. It is particularly preferred to use the ions in the form of their organic anions, preferably the salts of organic acids, suitable organic acids in this connection containing 2 to 20 carbon atoms and being selected from the group consisting of acetic acid, propionic acid, 2-ethylhexanoic acid, hexanoic acid, octanoic acid, Oleic acid, oleic acid, palmitic acid, stearic acid, naphthalic acid. Complexes of such salts with acetoacetone are also suitable.
  • component c) is very particularly preferred, which should preferably be used in the form of a copper naphtenate. Preferred amounts with respect to component c) are 3 to 15 ppm copper ions.
  • Liquid hydrocarbons in particular liquid aromatic hydrocarbons and very particularly toluene or xylene, are preferably suitable as the non-aqueous solvent for the polymerization reactions according to the invention.
  • mixtures of such solvents with other hydrocarbons such as those sold by the Exxon company under the Solvesso® brand, can also be used within the scope of the present technical teaching.
  • the present reaction relates to the reaction of certain unsaturated monomers in the sense of a radical polymerization.
  • the monomers are preferably selected from the group of acrylic acid and its derivatives and styrene.
  • the group of acrylic acid and its derivatives also includes methacrylic acid, methacrylic acid esters and other such substances. It is also possible to use polyunsaturated monomers, but it is particularly preferred to use the present starter system for the polymerization of monounsaturated monomers.
  • the actual polymerization takes place first by dissolving the monomers in the non-aqueous solvent and then adding the starter system.
  • the temperature increases to max. 80 ° C or below, preferably even below 70 ° C. In any case, it remains below the boiling point of the solvent and monomers used, as a result of which complex reflux cooling for the condensation of the vapors otherwise formed can be omitted.
  • the present invention also relates to the use of mixtures of components a) to c), as described above, for starting polymerization reactions of unsaturated monomers and non-aqueous solvent.
  • the polymers produced according to the invention are suitable for a large number of technical fields of application. It is estimated that they can be used as process chemicals in the field of oilfield and mining.
  • the rising melting point of the polymer solution obtained according to the DGF unit method C-IV 3a (52) is 32 ° C. Its Brookfield viscosity, measured at 50 ° with RVT spindle 4 at 20 rpm, is 600 mPas.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polymerization Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne des systèmes d'initiateurs destinés à la polymérisation de monomères insaturés dans des milieux non aqueux, contenant au moins a) des composés peroxyde dans des quantités de 0,02 à 7 % en poids ; b) des dérivés hydrazone organiques dans des quantités de 0,005 à 3 % en poids ; et, c) des ions de métaux de transition dans des quantités de 1 à 1000 ppm, les indications de poids se rapportant à l'ensemble, c.-à-d. aux monomères, aux milieux non aqueux et aux systèmes d'initiateurs.
EP04730498A 2003-05-09 2004-04-30 Systemes d'initiateurs ii Withdrawn EP1622945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320904A DE10320904A1 (de) 2003-05-09 2003-05-09 Startersysteme II
PCT/EP2004/004591 WO2004099263A1 (fr) 2003-05-09 2004-04-30 Systemes d'initiateurs ii

Publications (1)

Publication Number Publication Date
EP1622945A1 true EP1622945A1 (fr) 2006-02-08

Family

ID=33394401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04730498A Withdrawn EP1622945A1 (fr) 2003-05-09 2004-04-30 Systemes d'initiateurs ii

Country Status (6)

Country Link
US (1) US20070155924A1 (fr)
EP (1) EP1622945A1 (fr)
JP (1) JP2006526038A (fr)
CA (1) CA2524906A1 (fr)
DE (1) DE10320904A1 (fr)
WO (1) WO2004099263A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047790A1 (de) 2010-09-14 2012-03-15 Clariant International Ltd. Phosphorhaltige Mischungen, Verfahren zu deren Herstellung und ihre Verwendung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2686775A (en) * 1951-03-29 1954-08-17 Du Pont Polymerization process employing hydrazide/oxidant/copper salt initiator systems
US2800464A (en) * 1952-04-11 1957-07-23 Celanese Corp Addition of acid to halt polyurethane producing reaction
US3410719A (en) * 1964-08-31 1968-11-12 Exxon Research Engineering Co Air-curable acrylic-based coating compositions substrate coated therewith, and process of coating
US3607849A (en) * 1965-10-02 1971-09-21 Dynamit Nobel Ag Bulk copolymerization of vinyl chloride and one,two-trans-dichlorethylene
US4327196A (en) * 1980-12-22 1982-04-27 Uniroyal, Inc. Method for producing expanded and cured polyester resin
US4435525A (en) * 1982-09-30 1984-03-06 Pennwalt Corporation Reaction of carbonylhydrazines and organic peroxides to foam unsaturated polyester resins
DE19545609A1 (de) * 1995-12-07 1997-06-12 Hoechst Ag Redoxkatalysatorsystem zur Initiierung von Emulsionspolymerisationen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004099263A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047790A1 (de) 2010-09-14 2012-03-15 Clariant International Ltd. Phosphorhaltige Mischungen, Verfahren zu deren Herstellung und ihre Verwendung
WO2012034680A2 (fr) 2010-09-14 2012-03-22 Clariant International Ltd Mélanges phosphorés, procédés pour les préparer et utilisation desdits mélanges phosphorés

Also Published As

Publication number Publication date
DE10320904A1 (de) 2004-11-25
US20070155924A1 (en) 2007-07-05
WO2004099263A1 (fr) 2004-11-18
JP2006526038A (ja) 2006-11-16
CA2524906A1 (fr) 2004-11-18

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