Invention Application
- Patent Title: PRESSURE-SENSITIVE ADHESIVE DISPERSION COMPRISING POLYMERS WITH UREIDO GROUPS OR WITH UREIDO-ANALOGOUS GROUPS AND PREPARED BY STAGE POLYMERIZATION
- Patent Title (中): 包含尿素组合或尿素类聚合物的聚合物的压敏粘合剂分散体，并通过阶段聚合制备
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Application No.: US13443044Application Date: 2012-04-10
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Publication No.: US20120261070A1Publication Date: 2012-10-18
- 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
- Priority: EP11162536.4 20110415
- Main IPC: B32B7/12
- IPC: B32B7/12 ; C09J4/02
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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