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    • 24. 发明公开
    • LATEX COMPOSITION AND ONE-PACK AQUEOUS ADHESIVE
    • 乳胶组合物和一包水性粘合剂
    • EP3260488A1
    • 2017-12-27
    • EP16752576.5
    • 2016-02-19
    • Denka Company Limited
    • SHIMANO HirokazuMOCHIZUKI KenjiHAGIWARA Shogo
    • C08L11/02C08K3/38C08K5/17C08L33/06C09J11/06C09J111/02C09J133/00
    • C08K3/38C08K5/17C08L11/02C08L33/06C09J11/06C09J111/02C09J133/00
    • Provided are a latex composition suitable for use in a one-pack aqueous adhesive that has an excellent balance of excellent initial adhesive strength, storage stability, and spray coating properties and gives a soft adhesive layer after drying and a one-pack aqueous adhesive including the latex composition. A latex composition includes 100 parts by mass of a latex mixture including 50 to 85% by mass of a chloroprene polymer latex in terms of solid content, containing a chloroprene polymer and including 15 to 50% by mass of an acrylic polymer latex in terms of solid content, containing an acrylic polymer having a glass transition temperature of -40 to -10°C and includes 3 to 6 parts by mass of a 5% aqueous boric acid solution or a pH adjustor selected from amino acids having an isoelectric point of 5.5 to 6.5, in terms of solid content. The chloroprene polymer is preferably a chloroprene homopolymer, a copolymer of chloroprene and 2,3-dichloro-1,3-butadiene, or a mixture of them.
    • 本发明提供一种适用于单组分型水性粘合剂的胶乳组合物,其具有优异的初始粘合强度,储存稳定性和喷涂性的优异平衡,并且在干燥后产生柔软的粘合剂层,以及包含 胶乳组合物。 一种胶乳组合物,其特征在于,相对于固体成分含有氯乙烯聚合物胶乳50〜85质量%,含有氯丁二烯聚合物并含有15〜50质量%的丙烯酸系聚合物胶乳的胶乳混合物100质量份 其含有玻璃化转变温度为-40〜-10℃的丙烯酸类聚合物,并且含有3〜6质量份的5%硼酸水溶液或选自等电点为5.5的氨基酸的pH调节剂 以固体含量计为6.5。 氯丁二烯聚合物优选为氯丁二烯均聚物,氯丁二烯与2,3-二氯-1,3-丁二烯的共聚物或它们的混合物。