申请人:Interox Chemicals Limited
公开号:EP0054194A2
公开(公告)日:1982-06-23
Tertiary nitrogen-containing chain-extended epoxy resins, capable of forming stable aqueous emulsions, may be produced by chain-extending an epoxy resin using a tertiary nitrogen containing ether or ester polyol for example, particularly, polycaprolactone which has been polymerisation initiated by a tertiary amine polyol such as N-methyl diethanolamine. The corresponding amine salt is formed by treatment with an acid for example acetic acid and the resulting cationic polymer may be dispersed in water to form a cationic emulsion capable of being coated onto a substrate by electrodeposition. The chain extended resins, by virtue of their content of free epoxy groups are also usable for cross-linking and other uses.
可通过使用含叔氮的醚或酯多元醇(例如,特别是聚己内酯)对环氧树脂进行扩链,生产出能够形成稳定水性乳液的含叔氮扩链环氧树脂,聚己内酯是由叔胺多元醇(例如 N-甲基二乙醇胺)引发聚合反应的。相应的胺盐可通过酸(如醋酸)处理形成,由此产生的阳离子聚合物可分散在水中,形成阳离子乳液,并可通过电沉积涂覆在基底上。链延伸树脂由于含有游离环氧基团,也可用于交联和其他用途。