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US 2011/0034623 A1Published application
Method for preparation of penta-block copolymers with oh-functionalized blocks based on (meth)acrylate
AssigneesEvonik Roehm GmbH, Henkel AG & Co. KGaA
InventorsSven Balk, Gerd Loehden, Holger Kautz, Volker Erb, Uwe Franken, Georg Kinzelmann, Thomas Moeller
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Abstract
The invention relates to a process for preparing CABAC or ACBCA pentablock copolymers based on (meth)acrylate with an OH functionalization of the A blocks.
Claims40
Process for preparing pentablock copolymers functionalized with OH groups, characterized in that
- exactly two blocks containing hydroxy-functionalized (meth)acrylates and monomers selected from the group of the non-hydroxy-functionalized (meth)acrylates or mixtures thereof and
- exactly three blocks containing (meth)acrylates or mixtures thereof, which have no hydroxyl function and among which two blocks in turn are of corresponding composition and the third block has a different composition,
- are prepared as pentablock copolymers.
Use of block copolymers of the CABAC composition with OH groups in the individual A blocks, characterized in that
- the A blocks are a copolymer comprising hydroxy-functionalized (meth)acrylates and monomers selected from the group of the non-hydroxy-functionalized (meth)acrylates or mixtures thereof, and
- the B and C blocks containing (meth)acrylates, or mixtures thereof, which have no hydroxyl function
- in reactive hotmelt adhesives, other hotmelt adhesives, coating materials, primer coats, pressure-sensitive adhesives, reactive adhesives, adhesive compositions, sealant compositions, or as impact modifiers in adhesive or sealant compositions.
Use of block copolymers of the ACBCA composition with OH groups in the individual A blocks, characterized in that
- the A blocks are a copolymer comprising hydroxy-functionalized (meth)acrylates and monomers selected from the group of the non-hydroxy-functionalized (meth)acrylates or mixtures thereof, and
- the B and C blocks containing (meth)acrylates, or mixtures thereof, which have no hydroxyl function
- in reactive hotmelt adhesives, other hotmelt adhesives, coating materials, primer coats, pressure-sensitive adhesives, reactive adhesives, adhesive compositions, sealant compositions, or as impact modifiers in adhesive or sealant compositions.
Dependencies are inferred from the claim text.