Method for producing silyl-functionalized aba triblock copolymers on the basis of (meth)acrylate
AssigneesEvonik Roehm GmbH, Henkel AG & Co. KGaA
InventorsSven Balk, Gerd Loehden, Holger Kautz, Christine Troemer, Monika Maerz, Lars Zander, Jens Lueckert, Johann Klein, Thomas Moeller
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Abstract
The invention relates to a process for preparing (meth)acrylate-based ABA triblock copolymers with a silyl functionalization of the A blocks.
Claims28
Block copolymers of composition ABA with at least 1 and at most 4 silyl groups per individual A block, characterized in that
- block A, a copolymer containing silyl functionalized (meth)acrylates and monomers selected from the group of (meth)acrylates or mixtures thereof, and one
- block B, containing (meth)acrylates or mixtures thereof which have no additional silyl function,
- are polymerized as ABA block copolymers.
Process for preparing block copolymers of composition ABA with ≦4 silyl groups in the individual A blocks, characterized in that
- block A, a copolymer containing silyl-functionalized (meth)acrylates and monomers selected from the group of (meth)acrylates or mixtures thereof, and one
- block B, containing (meth)acrylates or mixtures thereof which have no additional silyl functionality,
- are prepared by means of atom transfer radical polymerization (ATRP) in the presence of an initiator and of a catalyst in a halogen-free solvent.
Use of block copolymers of composition ABA with ≦4 silyl-functionalized groups in the individual A blocks, characterized in that
- block A, a copolymer containing silyl-functionalized (meth)acrylates and monomers selected from the group of (meth)acrylates or mixtures thereof, and one
- block B, containing (meth)acrylates or mixtures thereof which have no silyl function,
- are polymerized as ABA block copolymers,
- in reactive hot-melt adhesives or in adhesive bonding compositions.
Use of block copolymers of composition ABA with ≦4 silyl-functionalized groups in the individual A blocks, characterized in that
- block A, a copolymer containing silyl-functionalized (meth)acrylates and monomers selected from the group of (meth)acrylates or mixtures thereof, and one
- block B, containing (meth)acrylates or mixtures thereof which have no silyl function,
- are polymerized as ABA block copolymers,
- in sealants for applications in the fields of automotive engineering, shipbuilding, container construction, mechanical engineering and aircraft engineering, and also in the electrical industry, in building applications and in the building of domestic appliances.
Use of block copolymers of composition ABA with ≦4 silyl-functionalized groups in the individual A blocks, characterized in that
- block A, a copolymer containing silyl-functionalized (meth)acrylates and monomers selected from the group of (meth)acrylates or mixtures thereof, and one
- block B, containing (meth)acrylates or mixtures thereof which have no silyl function,
- are polymerized as ABA block copolymers,
- in heat-sealing applications.
Dependencies are inferred from the claim text.