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    • 2. 发明专利
    • Emulsion polymer adhesive
    • 乳液聚合物粘合剂
    • JP2010013641A
    • 2010-01-21
    • JP2009139340
    • 2009-06-10
    • Rohm & Haas Coローム アンド ハース カンパニーRohm And Haas Company
    • EVEN RALPH CRAIGSUNDARAM SEKHAR
    • C08F2/22C08F2/38
    • C08F2/38C08F2/22C08L33/08C08L33/14C08L2205/02Y10T428/1452Y10T428/2878C08L2666/04
    • PROBLEM TO BE SOLVED: To provide a multi-stage polymer emulsion suitable for forming a pressure sensitive adhesive with high peel and high temperature cohesion. SOLUTION: The multi-stage emulsion polymer comprises: (a) 90 to 99.5 wt.% of a first polymer, based on total weight of first polymer and reinforcing polymer, wherein the first polymer is formed from at least one ethylenically unsaturated monomer, and has a Tg of less than -20°C, and is polymerized in the presence of 3 to 12 mmoles of chain transfer agent per kg of monomers in the first polymer; and (b) 0.5 to 10 wt.% of a reinforcing polymer based on total weight of first polymer and reinforcing polymer, wherein the reinforcing polymer either has a Tg of 60°C or higher, or is formed from monomers having two or more alpha, beta-ethylenically unsaturated groups, or combinations thereof. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供适于形成具有高剥离和高温内聚力的压敏粘合剂的多阶段聚合物乳液。 解决方案:多阶段乳液聚合物包含:(a)基于第一聚合物和增强聚合物的总重量的90至99.5重量%的第一聚合物,其中第一聚合物由至少一种烯属不饱和 单体,并且Tg小于-20℃,并且在第一聚合物中每千克单体3至12毫摩尔链转移剂存在下聚合; 和(b)基于第一聚合物和增强聚合物的总重量的0.5至10重量%的增强聚合物,其中所述增强聚合物的Tg为60℃或更高,或由具有两个或更多个α的单体形成 ,β-烯属不饱和基团,或其组合。 版权所有(C)2010,JPO&INPIT