申请人:Covestro Deutschland AG
公开号:EP3599255A1
公开(公告)日:2020-01-29
The invention relates to a polyisocyanate mixture comprising a polyisocyanate component A) having aliphatically and/or cycloaliphatically bonded isocyanate groups and a polyisocyanate component B) having araliphatically and/or aromatically bonded isocyanate groups, characterized in that the polyisocyanate component A) comprises at least 0.85% by weight of sulfonate groups (calculated as SO3; molar weight = 80 g/mol) in chemically bonded form and the proportion of the polyisocyanate component B) is 7 to 43% by weight of the total amount of the components A) and B). The invention further relates to the use thereof and also coating compositions comprising the polyisocyanate mixture and also the substrates coated with these coating compositions.
本发明涉及一种多异氰酸酯混合物,包括具有脂肪族和/或环脂肪族键合异氰酸酯基团的多异氰酸酯组分 A)和具有芳香族和/或芳香族键合异氰酸酯基团的多异氰酸酯组分 B),其特征在于多异氰酸酯组分 A)包括至少 0.85%(重量)的磺酸基团(以 SO3 计算;摩尔重量 = 80 g/mol)以化学键形式结合,多异氰酸酯组分 B)的比例为组分 A)和 B)总量的 7%至 43%(重量)。本发明还涉及其用途、包含该多异氰酸酯混合物的涂料组合物以及涂有这些涂料组合物的基材。