申请人:W.R. Grace & Co.-Conn.
公开号:EP0219857A2
公开(公告)日:1987-04-29
This invention is directed to (meth)acrylic plastisols having storage stability at 40°C for at least 3 days and plasticizability at a temperature below 120°C in 5 minutes comprising
(I) a poly(meth)acrylate in particle form,
(2) a liquid plasticizer member of the group consisting of:
(a) the reaction product of one mole of a polyether or polyester diol, two moles of a diisocyanate and two moles of a hydroxyalkyl - (meth)acrylate;
(b) the reaction product of one mole of a polyester or polyether diol, two moles of a diacyl halide and two moles of a mono-alcohol;
(c) the reaction product of one mole of a polyester or polyether diol, one mole of a diisocyanate, one mole of hydroxyalkyl (meth)-acrylate and one mole of an acyl halide; and
(d) mixtures of (a), (b) and (c); and, optionally, either
(3) a free radical thermal initiator, or
(4) a photoinitiator.
The piastisol dispersion after fluxing can form a sealant, coating or adhesive after the curing reaction.
本发明涉及(甲基)丙烯酸塑溶胶,在 40°C 下具有至少 3 天的储存稳定性,在 120°C 以下的温度下 5 分钟内具有可塑化性。
(I) 颗粒形式的聚(甲基)丙烯酸酯、
(2) 由以下物质组成的液态增塑剂
(a) 一摩尔聚醚或聚酯二元醇、两摩尔二异氰酸酯和两摩尔羟烷基-(甲基)丙烯酸酯的反应产物;
(b) 一摩尔聚酯或聚醚二元醇、两摩尔二酰卤和两摩尔一元醇的反应产物;
(c) 一摩尔聚酯或聚醚二元醇、一摩尔二异氰酸酯、一摩尔(甲基)丙烯酸羟 烷酯和一摩尔酰卤的反应产物;以及
(d) (a)、(b)和(c)的混合物;以及任选一种
(3) 自由基热引发剂,或
(4) 光引发剂。
助焊后的 piastisol 分散体在固化反应后可形成密封剂、涂层或粘合剂。