Process for preparing a bituminous binder composition

Process for preparing a bituminous binder composition

  • CN 101,374,906 B
  • Filed: 11/13/2006
  • Issued: 04/22/2015
  • Est. Priority Date: 11/14/2005
  • Status: Active Grant
First Claim
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1. , in the method substantially not having the bituminous binder composition preparing polymer modification under linking agent, said method comprising the steps of:

  • A. asphalt component is heated to the temperature of 185 DEG C-221 DEG C in steel basin;

    B. block copolymer composition is joined asphalt component asphalt component to be stirred with the uniform mixture forming asphalt component and block copolymer composition simultaneously;

    WithC. continue to stir this uniform mixture keeps temperature 185 DEG C-221 DEG C to be time of 4 hours-30 hours simultaneously, forms the bituminous binder composition of the polymer modification of solidification thus;

    Wherein said block copolymer composition comprises;

    The Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock of (i) formula A-B, wherein A is monovinyl aromatic hydrocarbon and B is the conjugated diene block of the mixture being selected from divinyl and divinyl and isoprene, described Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock has 30,000-78, the contents of ethylene of the peak molecular weight of 000 and the 35-80mol% based on the repeated monomer number of unit in conjugated diene block, and(ii) one or more segmented copolymers, it is selected from the segmented copolymer of formula (a) A-B-A, it has the 1.5-3.0 peak molecular weight doubly for the peak molecular weight of Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock, and wherein A is monovinyl aromatic hydrocarbon and B is the conjugated diene block of the mixture being selected from divinyl and divinyl and isoprene, formula (b) (A-B) nthe segmented copolymer of X, it has the 1.5-9.0 peak molecular weight doubly for the peak molecular weight of Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock, and wherein A is monovinyl aromatic hydrocarbon and B is the conjugated diene block of the mixture being selected from divinyl and divinyl and isoprene, n is the integer of 2-6 and X is coupling agent residue, (c) its mixture, wherein based on the number of the repeated monomer unit in conjugated diene block, often kind of segmented copolymer has the contents of ethylene of 35-80mol%, wherein when (i) and (ii) is all present in this block copolymer composition, i the ratio of () and (ii) is for being greater than 1;

    1, and wherein by ASTM D1238, condition G;

    200 DEG C, measure under 5kg load, the melting index of this block copolymer composition is for being greater than 15g/10 minute.

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