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1. (WO2016061068) POLYURETHANE CATALYSTS FROM SULFUR BASED SALTS

Pub. No.:    WO/2016/061068    International Application No.:    PCT/US2015/055281
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Wed Oct 14 01:59:59 CEST 2015
IPC: C08G 18/18
B01J 31/02
Applicants: EVONIK DEGUSSA GMBH
Inventors: BURDENIUC, Juan Jesus
Title: POLYURETHANE CATALYSTS FROM SULFUR BASED SALTS
Abstract:
This invention discloses sulfite salts as catalysts to make polyurethane polymers. In particular, this invention discloses 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 catalysts to promote the formation of urethane and urea bonds such as those found in polyurethane emulsions for paints, coatings, protective coatings, lacquer, 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.