Polyisocyanurate polymers and process for the production of polyisocyanurate polymers
申请人:Covestro Deutschland AG
公开号:US11390707B2
公开(公告)日:2022-07-19
The present invention relates to novel polyisocyanurate plastics which are obtainable by catalytic trimerization of a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates. “Low in monomeric diisocyanates” means that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight. The invention further relates to the use of these polyisocyanurate plastics for production of coatings, films, semi-finished products and mouldings, and to a process for producing polyisocyanurate plastics comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, “low in monomeric diisocyanates” meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight; (b) catalytically trimerizing the polyisocyanate composition A).
本发明涉及新型聚异氰酸酯塑料,可通过对含有低聚多异氰酸酯且单体二异氰酸酯 含量低的多异氰酸酯组合物 A) 进行催化三聚化来获得。"单体二异氰酸酯含量低 "是指多异氰酸酯组合物 A) 的单体二异氰酸酯含量最多为 20%(按重量计)。本发明还涉及使用这些聚异氰酸酯塑料生产涂料、薄膜、半成品和模塑件,以及生产 聚异氰酸酯塑料的工艺,包括以下步骤:(a) 提供含有低聚多异氰酸酯且单体二异氰酸酯含量低的多异氰酸酯组合物 A),"单体二异氰酸酯含量低 "是指多异氰酸酯组合物 A)的单体二异氰酸酯含量最多为 20%(按重量计); (b) 对多异氰酸酯组合物 A)进行催化三聚。