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    • 9. 发明授权
    • Stabilized adhesive microspheres
    • 稳定粘合剂微球
    • US5756625A
    • 1998-05-26
    • US731351
    • 1996-10-11
    • Michael D. CrandallMichael R. Kesti
    • Michael D. CrandallMichael R. Kesti
    • C08F2/00C08F2/44C08F220/00C08F291/00C08J9/16C09J4/02C09J4/06C09J133/06C08F18/02C08F12/30C08F20/10C08F218/02
    • C09J4/06
    • Stabilized microsphere adhesive composition comprising: a plurality of polymeric, elastomeric microspheres wherein the microspheres are the reaction product of reactants comprising polymerizable starting materials comprising at least one C.sub.4 -C.sub.14 alkyl (meth)acrylate monomer and optionally at least one comonomer, at least one vinyl-unsaturated additive having both an ionic moiety and a hydrophobic moiety and containing at least 5 but not more than 40 carbon atoms in an amount about 0.1 to 3 parts by weight of the microspheres; optionally, a polymeric stabilizer in an amount of between about 0.1 and about 3 parts by weight per 100 parts by weight of the microspheres; a surfactant in an amount of no greater than about 5 parts by weight per 100 parts by weight of the microspheres; optionally a modifier, wherein the modifier is at least one of a chain transfer agent, a tackifier, a solvent or the like in an amount that is sufficient to provide microspheres with a n-heptane soluble portion in the range of 30-98%; and (f) an initiator in an amount effective to catalyze the polymerization reaction present in amounts ranging from about 0.1 to approximately 2 parts by weight per 100 parts by weight of the polymerizable monomer starting material.
    • 稳定的微球粘合剂组合物包括:多个聚合弹性体微球,其中微球是包含可聚合原料的反应物的反应产物,其包含至少一种(甲基)丙烯酸C 4 -C 14烷基酯单体和任选的至少一种共聚单体,至少一种乙烯基 - 不饱和添加剂,其具有离子部分和疏水部分,并且含有约0.1至3重量份的微球的至少5个但不多于40个碳原子; 任选地,相对于每100重量份的微球,约0.1至约3重量份的量的聚合物稳定剂; 相对于100重量份微球,表面活性剂的量不大于约5重量份; 任选的改性剂,其中改性剂是链转移剂,增粘剂,溶剂等中的至少一种,其量足以提供具有30-98%范围内的正庚烷可溶部分的微球; 和(f)有效催化聚合反应的量的引发剂的存在量为每100重量份可聚合单体原料约0.1-约2重量份。