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PRESSURE-SENSITIVE ADHESIVE DISPERSION COMPRISING POLYMERS WITH UREIDO GROUPS OR WITH UREIDO-ANALOGOUS GROUPS AND PREPARED BY STAGE POLYMERIZATION
PRESSURE-SENSITIVE ADHESIVE DISPERSION COMPRISING POLYMERS WITH UREIDO GROUPS OR WITH UREIDO-ANALOGOUS GROUPS AND PREPARED BY STAGE POLYMERIZATION
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机译：压敏胶分散体，包含具有脲醛基或脲醛-类似环氧基的聚合物，并通过阶段聚合法制备
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摘要
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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