Polyurethane foam and its manufacture method

Polyurethane foam and its manufacture method

  • CN 103,492,468 B
  • Filed: 04/24/2012
  • Issued: 03/01/2017
  • Est. Priority Date: 04/29/2011
  • Status: Active Grant
First Claim
Patent Images

1. the polyurethane foam that can be obtained by the reaction of the mixture comprising llowing group of materials:

  • A) isocyanate-reactive compound;

    B) foaming agent, it is selected from straight chain, side chain or ring-type C1-C6- hydrocarbon, straight chain, side chain or ring-type C1-C6- fluorohydrocarbon, N2

    O2

    Argon and/or CO2, wherein said foaming agent B) existed with supercritical or near critical state, wherein said foaming agent B) ratioBased on this mixture total weight gauge >

    =4 weight % to≤

    10 weight %;

    WithC) polyisocyanates;

    It is characterized in that,Described isocyanate activity compound A) comprise hydrophobic part and hydrophilic segment and there is the average hydroxyl-sense more than 1Degree,Wherein said hydrophobic part comprises there is at least saturation of 6 carbon atoms or aliphatic unsaturated hydrocarbon, andWherein said hydrophilic segment comprises epoxy alkane unit and/or ester units.

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