申请人:3M INNOVATIVE PROPERTIES COMPANY
公开号:US10093753B2
公开(公告)日:2018-10-09
Acrylic syrup polymer composition are provided by partially polymerizing a (meth)acrylic monomer mixture in the presence of a thiol chain transfer agent to produce a first syrup polymer composition comprising a low molecular weight solute (meth)acrylic copolymer and solvent monomers, quenching the chain transfer agent, further polymerizing the first syrup polymer composition to produce a second syrup polymer composition comprising the low molecular weight solute acrylic copolymer, a high molecular weight solute acrylic copolymer and optionally unreacted solvent monomers, optionally adding a crosslinker and photoinitiator; and further photopolymerizing the syrup polymer composition to produce a pressure-sensitive adhesive.
丙烯酸糖浆聚合物组合物的制备方法是:在硫醇链转移剂存在下,部分聚合(甲基)丙烯酸单体混合物,生成包含低分子量溶质(甲基)丙烯酸共聚物和溶剂单体的第一糖浆聚合物组合物;淬灭链转移剂;进一步聚合第一糖浆聚合物组合物,生成包含低分子量溶质丙烯酸共聚物、高分子量溶质丙烯酸共聚物和任选未反应溶剂单体的第二糖浆聚合物组合物;任选添加交联剂和光引发剂;进一步光聚合糖浆聚合物组合物,生产压敏胶。