申请人:PPG Industries Ohio, Inc.
公开号:US10227502B2
公开(公告)日:2019-03-12
The present invention relates to curable solid particulate compositions that include: (a) a first reactant having at least two cyclic carbonate groups; and (b) a second reactant having at least two active hydrogen groups that are reactive with the cyclic carbonate groups of the first reactant. With some embodiments, the first reactant is a polyol residue having at least two cyclic carbonate groups, such as bisphenol A that has been reacted with epichlorohydrin, and in which the oxirane groups thereof have been converted to cyclic carbonate groups. The active hydrogen groups of the second reactant, with some embodiments, are each independently selected from hydroxyl groups, thiol groups, and amine groups. The curable solid particulate compositions, with some embodiments, are in the form of curable powder coating compositions.
本发明涉及可固化的固体颗粒组合物,其中包括(a) 具有至少两个环状碳酸酯基团的第一反应物;和 (b) 具有至少两个与第一反应物的环状碳酸酯基团反应的活性氢基的第二反应物。在某些实施例中,第一反应物是具有至少两个环状碳酸酯基团的多元醇残留物,如与环氧氯丙烷反应后的双酚 A,其中的环氧乙烷基团已转化为环状碳酸酯基团。在某些实施例中,第二种反应物的活性氢基各自独立地选自羟基、硫醇基和胺基。在某些实施例中,可固化的固体颗粒组合物为可固化的粉末涂料组合物形式。