Reactive polyurethane composition comprising abrasion-resistant fillers

Reactive polyurethane composition comprising abrasion-resistant fillers

  • CN 103,429,631 A
  • Filed: 12/19/2011
  • Published: 12/04/2013
  • Est. Priority Date: 12/20/2010
  • Status: Active Grant
First Claim
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1. produce the method for reactive polyurethane composition, comprise the following steps:

  • -in the first method steps, the isocyanate-reactive polymkeric substance that is at least 90 % by weight by the straight-chain molecule share or isocyanate-reactive polymeric blends, by being reacted with the polyisocyanates of molecular weight<

    500g/mol, make the thermoplastic polyurethane of the monomer-free with isocyanate-reactive group, the isocyanate groups of described polyisocyanates is mole in shortage with respect to the isocyanate-reactive end group of described polymkeric substance or described polymeric blends-in the second method steps, described urethane reacts with the isocyanate-terminated prepolymer that residual monomer content is not more than the low-monomer-content of 0.5 % by weight, the polyurethane composition that generation comprises the reactive isocyanate group, the mol ratio of the isocyanate-reactive end group of thermoplastic polyurethane and the isocyanate group of prepolymer is 1;

    1.1 to 1;

    5Wherein the method is in the situation that add the mineral filler component and optionally add auxiliary agent to carry out, and this filler component comprises the particle that Mohs'"'"' hardness is at least at least one filler of 6.

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