Asymmetric diisocyanate monomers in urethane polymers and oligomers to reduce crystallinity
申请人:BASF CORPORATION
公开号:US20030125501A1
公开(公告)日:2003-07-03
Compositions comprising a reaction product of a) an asymmetrical, saturated polyisocyanate that is non-cyclic, non-aromatic, and has at least 3 carbon atoms in the polyisocyanate per isocyanate group, b) a material that is at least one of i) a primary carbamate material having at least one functional group reactive with an isocyanate and at least one primary carbamate group or a group convertible to a primary carbamate group and ii) a reaction product of the primary carbamate material and an extending agent, and c) optionally, a chain extension agent that has at least difunctional reactivity with an isocyanate. Also, methods of making these compositions.
a) 不对称饱和多异氰酸酯的反应产物,该多异氰酸酯为非环状、非芳香族, 每个异氰酸酯基团至少有 3 个碳原子、b) 至少为以下两种之一的材料:i) 初级氨基甲酸酯材料,该材料至少具有一个与异氰酸酯反应的官能团和至少一个初级氨基甲酸酯基团或可转化为初级氨基甲酸酯基团的基团;ii) 初级氨基甲酸酯材料与延伸剂的反应产物;以及 c) 可选的,与异氰酸酯至少具有双官能团反应性的扩链剂。此外,还有制造这些组合物的方法。