Invention Grant
US09365745B2 Pressure-sensitive adhesive dispersion comprising polymers with ureido groups or with ureido-analogous groups and prepared by stage polymerization
有权
压敏粘合剂分散体包含具有脲基或脲基 - 类似基团并通过阶段聚合制备的聚合物
- Patent Title: Pressure-sensitive adhesive dispersion comprising polymers with ureido groups or with ureido-analogous groups and prepared by stage polymerization
- Patent Title (中): 压敏粘合剂分散体包含具有脲基或脲基 - 类似基团并通过阶段聚合制备的聚合物
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Application No.: US13443044Application Date: 2012-04-10
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Publication No.: US09365745B2Publication Date: 2016-06-14
- Inventor: Matthias Gerst , Dirk Wulff , Thomas Christ
- Applicant: Matthias Gerst , Dirk Wulff , Thomas Christ
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P
- Priority: EP11162536 20110415
- Main IPC: C09J4/02
- IPC: C09J4/02 ; C09J133/04 ; C09J133/14 ; C09J4/00 ; C09J133/00
Abstract:
A description is given of a pressure-sensitive adhesive dispersion comprising a water-dispersed polymer P1 formed by emulsion polymerization. The polymer P1 is formed from a monomer mixture comprising (a) at least 40% by weight of C4 to C20 alkyl (meth)acrylates which when polymerized as homopolymers have a glass transition temperature of −30° C. or less, (b) at least 0.05% by weight of (meth)acrylate monomers having a substituent of the formula where X is CH2, O, NH or NR and R is a C1 to C4 alkyl group, (c) at least 0.1% by weight of acid monomers. The polymer P1 is prepared by polymerization in at least 2 stages, the glass transition temperature of a polymer from monomers of the first stage being lower by at least 20° C. than the glass transition temperature of a polymer from monomers of a later, second stage.
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