A latex useful as a binder for paper, nonwovens, or textiles is prepared by copolymerising in aqueous emulsion using a redox initiator at low temperature, e.g. 5°C, a mixture of 35 to 60% weight of a conjugated diene monomer and from about 30 to 65% by weight of a vinyl aryl monomer. Additional improvements can be obtained by incorporating in the mixture a small percentage by weight of copolymerisable monomers such as acrylic acid, methacrylic acid, itaconic acid and/or a functional type monomer having an activatable methyl, ethyl, propyl or butyl ester group and a vinyl group.
一种可用作纸张、无纺布或纺织品粘合剂的胶乳是通过在低温(如 5℃)下使用氧化还原
引发剂在
水性乳液中共聚35-60%(按重量计)的共轭二烯单体和30-65%(按重量计)的
乙烯基芳基单体的混合物来制备的。在混合物中加入少量可共聚的单体,如
丙烯酸、
甲基丙烯酸、
衣康酸和/或具有可活化的甲基、乙基、丙基或丁基酯基和
乙烯基的官能团型单体,可获得进一步的改进。