WO2005118663A1 - Melanges transparents de copolymeres sequences styrene-butadiene et de polystyrene - Google Patents

Melanges transparents de copolymeres sequences styrene-butadiene et de polystyrene Download PDF

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Publication number
WO2005118663A1
WO2005118663A1 PCT/EP2005/005521 EP2005005521W WO2005118663A1 WO 2005118663 A1 WO2005118663 A1 WO 2005118663A1 EP 2005005521 W EP2005005521 W EP 2005005521W WO 2005118663 A1 WO2005118663 A1 WO 2005118663A1
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WO
WIPO (PCT)
Prior art keywords
block
styrene
molecular weight
vinyl aromatic
aromatic monomers
Prior art date
Application number
PCT/EP2005/005521
Other languages
German (de)
English (en)
Inventor
Philippe Desbois
Volker Warzelhan
Konrad Knoll
Norbert Niessner
Jürgen Koch
Original Assignee
Basf Aktiengesellschaft
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 Basf Aktiengesellschaft filed Critical Basf Aktiengesellschaft
Publication of WO2005118663A1 publication Critical patent/WO2005118663A1/fr

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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
    • C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
    • C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
    • C08F297/04—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising vinyl aromatic monomers and conjugated dienes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
    • C08L25/02—Homopolymers or copolymers of hydrocarbons
    • C08L25/04—Homopolymers or copolymers of styrene
    • C08L25/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes

Definitions

  • the molecular weight distribution of the styrene polymer and of the block S2 can be broadened.
  • the molecular weight distribution M w / M n is preferably less than 1.5 for the block Si and more than 1.5 for the block S 2 , preferably in the range from 1.8 to 2.5.
  • Step c) and the polymerization of the block S 2 and the styrene polymer can be carried out in a continuously flowing reactor cascade comprising at least one remixing reactor and at least one downstream non-backmixing reactor.
  • the continuous procedure enables a solids content of more than 50% by weight at the end of the non-backmixing reactor and thus a particularly economical process.
  • Examples are diethyl aluminum - (N, N-dibutyIamide), diethyl aluminum ethoxide, diisobutyl aluminum ethoxide, diisobutyl (2,6-di-tert-butyl-4-methylphenoxy) aluminum (CAS No. 56252- 56-3), methylaluminoxane, isobutylated methylaluminoxane, isobutylaluminoxane, tetraisobutyldialuminoxane or bis (diisobutyl) aluminum oxide.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

L'invention concerne un procédé pour produire des mélanges de copolymères séquencés S1-B-S2 et de polymères de styrène, comprenant les étapes suivantes: a) production d'une solution de copolymère séquencé à terminaison lithium S1-B-Li par polymérisation anionique séquentielle, b) stabilisation de la solution obtenue à l'étape a) par addition d'un composé organomagnésium ou organoaluminium, c) addition de monomères aromatiques vinyliques et d'un initiateur de polymérisation anionique, d) addition d'un agent de rupture de chaîne ou d'un agent de couplage et isolation du mélange. S1 représente une séquence constituée de monomères aromatiques vinyliques présentant un poids moléculaire moyen Mn situé dans une plage de 8000 - 40000 g/mol, S2 représente une séquence constituée de monomères aromatiques vinyliques et présentant un poids moléculaire moyen Mn situé dans une plage de 50000 250000 g/mol et B représente une séquence, éventuellement constituée de plusieurs sous-séquences, de diènes et/ou de diènes et de monomères aromatiques vinyliques. L'invention concerne également des mélanges pouvant être obtenus selon ce procédé.
PCT/EP2005/005521 2004-05-26 2005-05-21 Melanges transparents de copolymeres sequences styrene-butadiene et de polystyrene WO2005118663A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410026324 DE102004026324A1 (de) 2004-05-26 2004-05-26 Transparente Mischungen aus Styrol-Butadien-Blockcopolymeren und Polystyrol
DE102004026324.8 2004-05-26

Publications (1)

Publication Number Publication Date
WO2005118663A1 true WO2005118663A1 (fr) 2005-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/005521 WO2005118663A1 (fr) 2004-05-26 2005-05-21 Melanges transparents de copolymeres sequences styrene-butadiene et de polystyrene

Country Status (2)

Country Link
DE (1) DE102004026324A1 (fr)
WO (1) WO2005118663A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4939208A (en) * 1986-12-04 1990-07-03 Labofina, S.A. Transparent block copolymers having two monovinyl-substituted aromatic blocks of different molecular weight
WO2000058380A1 (fr) * 1999-03-27 2000-10-05 Basf Aktiengesellschaft Polystyrene transparent et resistant aux chocs a base de copolymeres blocs styrene-butadiene
DE10250280A1 (de) * 2002-10-28 2004-05-13 Basf Ag Verfahren zur anionischen Polymerisation von schlagzähem Polystyrol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4939208A (en) * 1986-12-04 1990-07-03 Labofina, S.A. Transparent block copolymers having two monovinyl-substituted aromatic blocks of different molecular weight
WO2000058380A1 (fr) * 1999-03-27 2000-10-05 Basf Aktiengesellschaft Polystyrene transparent et resistant aux chocs a base de copolymeres blocs styrene-butadiene
DE10250280A1 (de) * 2002-10-28 2004-05-13 Basf Ag Verfahren zur anionischen Polymerisation von schlagzähem Polystyrol

Also Published As

Publication number Publication date
DE102004026324A1 (de) 2005-12-15

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