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    • 3. 发明授权
    • Adhesives and method for making same
    • 粘合剂和制造方法
    • US06608134B1
    • 2003-08-19
    • US09565718
    • 2000-05-05
    • Singa D. TobingAndrew KleinThomas Edward White
    • Singa D. TobingAndrew KleinThomas Edward White
    • C08K300
    • C08J3/246C08J2333/00C08L33/08C08L2205/18C08L2666/02C08L2666/28C09D133/06C09J133/06C09J133/064C09J151/003C09J2201/606
    • This invention relates to an adhesive composition comprising: microgels of at least one acrylic polymer; and an interlinking polymer covalently bonding at least some of said microgels to each other through said interlinking polymer. In one embodiment, the adhesive further comprises at least one non-gelled polymer, said interlinking polymer covalently bonding at least some of said microgels to said non-gelled polymer. In one embodiment, the invention relates to an aqueous dispersion, comprising: water; microgels of at least one acrylic polymer dispersed in said water; and at least one interlinking polymer capable of covalently bonding said microgels to each other through said interlinking polymer. In one embodiment, the dispersion further comprises at least one non-gelled polymer, and the interlinking polymer is capable of covalently bonding said microgels to said non-gelled polymer. This invention also relates to an adhesive composition made by heating the foregoing aqueous dispersion at a sufficient temperature and for an effective period of time to covalently bond at least some of said microgels to each other through said interlinking polymer, and optionally covalently bond at least some of said microgels to the foregoing non-gelled polymer. In one embodiment, the adhesive is a pressure sensitive adhesive. These adhesives may be characterized by high peel energy, high tack and high shear holding power.
    • 本发明涉及一种粘合剂组合物,其包含:至少一种丙烯酸类聚合物的微凝胶; 和通过所述互连聚合物将至少一些所述微凝胶彼此共价键合的相互连接的聚合物。 在一个实施方案中,粘合剂还包含至少一种非胶凝聚合物,所述互连聚合物将至少一些所述微凝胶共价键合到所述非凝胶聚合物。在一个实施方案中,本发明涉及水分散体,其包含:水; 分散在所述水中的至少一种丙烯酸类聚合物的微凝胶; 以及能够通过所述互连聚合物将所述微凝胶彼此共价结合的至少一种互连聚合物。 在一个实施方案中,分散体还包含至少一种非胶凝聚合物,并且所述互连聚合物能够将所述微凝胶共价键合到所述非胶凝聚合物。 本发明还涉及一种粘合剂组合物,其通过在足够的温度下加热上述水性分散体并在有效的时间段内通过所述互连聚合物将至少一些所述微凝胶彼此共价结合,并且任选地共价键合至少一些 的上述非胶凝聚合物。在一个实施方案中,粘合剂是压敏粘合剂。 这些粘合剂的特征在于高剥离能力,高粘性和高剪切保持力。