申请人:Bruchmann Bernd
公开号:US20090192284A1
公开(公告)日:2009-07-30
Stabilizers composed of
(I) one or more polyisocyanates having an average of from 2 to 10 isocyanate groups per molecule, preferably from 2.1 to 10, particularly preferably from 2.2 to 10,
(II) per mole of isocyanate groups, from 0.1 to 1.0 mol of one or more active ingredient groups which protect plastics from degradation via heat, UV radiation, oxidation, hydrolysis, or mechanical action during processing, where the active ingredient groups have been linked to the polyisocyanates by way of functional groups A which can react with the isocyanate groups, and where the active ingredient groups have been selected from phenols, sterically hindered amines (HALS stabilizers), benzotriazoles, benzophenones, aromatic amines, or phosphites;
(III) per mole of isocyanate groups, from 0 to 0.9 mol of one or more auxiliary groups which modify the properties of the stabilizer, where the auxiliary groups have been linked to the polyisocyanates by way of functional groups B which can react with the isocyanate groups.
稳定剂由以下组成:(I)一种或多种聚异氰酸酯,每个分子平均含有2至10个异氰酸酯基团,优选2.1至10,特别优选2.2至10;(II)每摩尔异氰酸酯基团,0.1至1.0摩尔一种或多种活性成分基团,可在加工期间通过热、紫外线辐射、氧化、水解或机械作用保护塑料,其中活性成分基团通过可与异氰酸酯基团反应的官能团A与聚异氰酸酯连接,所述活性成分基团选自酚、立体位阻胺(HALS稳定剂)、苯并三唑、苯并苯酮、芳香胺或磷酸盐;(III)每摩尔异氰酸酯基团,0至0.9摩尔一种或多种辅助基团,可修改稳定剂的性能,其中辅助基团通过可与异氰酸酯基团反应的官能团B与聚异氰酸酯连接。