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US 2016/0102169 A1Published application
Polyurethane Catalysts from Sulfur Based Salts
AssigneeAir Products and Chemicals, Inc.
InventorJuan Jesus Burdeniuc
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AssigneeAir Products and Chemicals, Inc.
InventorJuan Jesus Burdeniuc
Estimating the term…
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.
A catalyst composition comprising at least one sulfite and at least one tertiary amine.
A composition comprising at least one sulfite catalyst, water, at least one polyol and at least one member selected from phase transfer catalysts, at least one tertiary amine catalyst, and at least one metal catalyst.
A process for producing polyurethane comprising contacting at least one polyol and at least one isocyante while in the presence of a catalyst comprising at least one sulfite.
A catalyst composition comprising at least one member selected from the group consisting of i) M2SO3 where M is a quaternary ammonium ion of general formula R1R2R3R4N where R1, R2, R3, R4 are C1-C18 alkyl, alkelnyl, aryl, alkylaryl, substituted alkyl, alkenyl or alkylaryl linear, branched with or without heterocyclic containing groups, ii) a sulfite having a formula (Xn)m(Ym)n[SO3](m.n+n.m/2) where X is a metal cation with charge n, Y is an alkylammonium or polyalkylammonium ion with charge m, X is selected from the group of Li+, Na+, K+, Cs+, Be2+, Mg2+, Ca2+, and Zn2+, n is an integer from 1 to 4;
Dependencies are inferred from the claim text.