申请人:Covestro Deutschland AG
公开号:US10252988B2
公开(公告)日:2019-04-09
The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterized in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines. The invention also relates to a method for producing transparent polythiourethane bodies by the conversion of a composition of this type, to polythiourethane bodies produced in this manner and to the use of polyisocyanates, produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines, for producing transparent polythiourethane bodies.
本发明涉及一种用于生产透明聚硫乙烷体的组合物,该组合物含有或由以下组分组成:A) 多异氰酸酯组分,该组分至少含有一种多异氰酸酯,其异氰酸酯基团的官能度至少为每分子 2 个;B) 硫醇组分,该组分至少含有一种多硫醇,其硫醇基团的官能度至少为每分子 2 个,此外还可选 C) 辅助剂和添加剂,异氰酸酯基团与与异氰酸酯有关的反应性基团的比例为 0.5:1 至 2.0:1。该组合物的特征在于,多异氰酸酯组分 A) 的多异氰酸酯是通过脂肪族、环脂族、芳香族或芳香族多胺的气相光固化反应制得的。本发明还涉及一种通过转化这种类型的组合物生产透明聚硫乙烷体的方法,以这种方 式生产的聚硫乙烷体,以及使用通过脂肪族、环脂族、芳香族或脂肪族多胺的气相相加 成生产的多异氰酸酯生产透明聚硫乙烷体。