申请人:Evonik Operations GmbH
公开号:US10570245B2
公开(公告)日:2020-02-25
This invention discloses the use of sulfite salts as catalysts to make polyurethane polymers. In particular, this invention discloses the use of metal salts such as alkali metal salts as well as alkyl ammonium salts such as tetralkyl ammonium salts as catalysts to make polyurethane polymers. The sulfite salts are useful to make a wide variety of polyurethane polymers and polyurethane foam polymer products such as flexible polyurethane foam polymers, rigid foam polyurethane polymers, semi-rigid polyurethane polymer, microcellular polyurethane polymer, and spray foam polyurethane polymer as well as any polymeric material that requires the assistance of catalysts to promote the formation of urethane and urea bonds such as those found in polyurethane emusions for paints, coatings, protective coatings, lacquer, etc as well as other polyurethane or polyurethane containing materials such as thermoplastic polymers, thermoplastic polyurethane polymers, elastomers, adhesives, sealants, etc. Examples of catalysts comprising the invention include sodium sulfite, potassium sulfite, lithium sulfite, tetramethylammonium sulfite and the like.
本发明公开了亚硫酸盐作为催化剂用于制造聚氨酯聚合物。特别是,本发明公开了使用金属盐(如碱金属盐)和烷基铵盐(如四烷基铵盐)作为催化剂来制造聚氨酯聚合物。亚硫酸盐可用于制造各种聚氨酯聚合物和聚氨酯泡沫聚合物产品,如软质聚氨酯泡沫聚合物、硬质泡沫聚氨酯聚合物、半硬质聚氨酯聚合物、微孔聚氨酯聚合物、和喷射泡沫聚氨酯聚合物,以及任何需要催化剂辅助以促进形成聚氨酯和脲键的聚合材料,如油漆、涂料、防护涂料、油漆等的聚氨酯乳液中的聚氨酯和脲键,以及其他聚氨酯或含聚氨酯的材料,如热塑性聚合物、热塑性聚氨酯聚合物、弹性体、粘合剂、密封剂等。本发明的催化剂包括亚硫酸钠、亚硫酸钾、亚硫酸锂、四甲基亚硫酸铵等。