Polyurethane rigid foams

Polyurethane rigid foams

  • CN 103,619,898 A
  • Filed: 05/31/2012
  • Published: 03/05/2014
  • Est. Priority Date: 05/31/2011
  • Status: Active Application
First Claim
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1. hard polyurethane foams, it can be by makingA) polyisocyanates withB) there are at least two compounds that isocyanate group are to reactive hydrogen atom,C) whipping agent andD) at least one fire retardantThere is lower reaction and obtain;

  • Wherein there are at least two compound b that isocyanate group are to reactive hydrogen atom) comprise at least one polyether glycol bi) and at least one polyester polyol bii), and fire retardant d) comprise expansible black lead di).

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