BR112018007427A2 - composição, processo para produzir poliuretano e espuma de poliuretano à base de poliéster - Google Patents

composição, processo para produzir poliuretano e espuma de poliuretano à base de poliéster

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Publication number
BR112018007427A2
BR112018007427A2 BR112018007427A BR112018007427A BR112018007427A2 BR 112018007427 A2 BR112018007427 A2 BR 112018007427A2 BR 112018007427 A BR112018007427 A BR 112018007427A BR 112018007427 A BR112018007427 A BR 112018007427A BR 112018007427 A2 BR112018007427 A2 BR 112018007427A2
Authority
BR
Brazil
Prior art keywords
polyurethane
polymers
sulfite
foam
salts
Prior art date
Application number
BR112018007427A
Other languages
English (en)
Other versions
BR112018007427B1 (pt
Inventor
Jesus Burdeniuc Juan
Original Assignee
Evonik Degussa Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evonik Degussa Gmbh filed Critical Evonik Degussa Gmbh
Publication of BR112018007427A2 publication Critical patent/BR112018007427A2/pt
Publication of BR112018007427B1 publication Critical patent/BR112018007427B1/pt

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Sealing Material Composition (AREA)

Abstract

a presente invenção descreve o uso de sais de sulfito como catalisadores para produzir polímeros de poliuretano. em particular, a presente invenção descreve o uso de sais de metal tais como sais de metal álcali assim como de sais de alquil amônio tais como sais de tetra-alquil-amônio como catalisadores para produzir polímeros de poliuretano. os sais de sulfito são úteis para produzir polímeros de poliuretano e produtos de polímero de espuma de poliuretano tais como polímeros de espuma de poliuretano flexível, polímeros de poliuretano de espuma rígida, polímero de poliuretano semirrígido, polímero de poliuretano microcelular e polímero de poliuretano de espuma em aerossol e qualquer material polimérico que precise da ajuda de catalisadores para estimular a formação de ligações de uretano e ureia tais como aquelas encontradas em emulsões de poliuretano para tintas, revestimentos, revestimentos protetores, verniz de laca, bem como outros materiais de poliuretano ou que contém poliuretano tais como polímeros termoplásticos, polímeros de poliuretano termoplásticos, elastômeros, adesivos, vedantes, etc. os exemplos de catalisadores adequados incluem sulfito de sódio, sulfito de potássio, sulfito de lítio, sulfito de tetrametilamônio e semelhantes.
BR112018007427-6A 2014-10-13 2016-04-13 Composição, processo para produzir poliuretano e espuma de poliuretano à base de poliéster BR112018007427B1 (pt)

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