Dow Global Technologies LLC ;Rohm and Haas Company
发明人:
Kamber Nahrain E.,Argyropoulos John N.,Popa Paul J.,Murray Scott A.
申请号：
US201816116602
公开号：
US2018371259(A1)
申请日:
2018.08.29
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
The present invention provides substantially isocyanate-free multicomponent compositions useful in making rapid dry primer compositions and coatings, the compositions comprising one or more carboxylic acid compounds that contain one of a benzothiazole, benzoxazole, or benzimidazole group, preferably, that contain a benzothiazole group, one or more hydrophobic sulfonic acid catalyst, one or more pigment, extender or filler, one or more a) polycarbamates from alkyd polyol or acrylic polyol and one or more b) a polyaldehydes or the acetal or hemiacetal thereof as a second component. The multicomponent compositions cure quickly at a temperature of from 0° C. to less than 80° C. to form a crosslinked polyurethane coating having improved humidity and corrosion resistance.
