Biodegradable branched aliphatic polyester multi-block copolymer and preparation method thereof

Biodegradable branched aliphatic polyester multi-block copolymer and preparation method thereof

  • CN 102,516,555 A
  • Filed: 11/24/2011
  • Published: 06/27/2012
  • Est. Priority Date: 11/24/2011
  • Status: Active Application
First Claim
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1. Biodegradable branched aliphatic polyester segmented copolymer, this segmented copolymer is to be made up of I segment and II segment,Wherein, said I segment is hydroxy-end capped aliphatic poly ester oligomer or prepolymer, and it is by C 4-C 12Binary aliphatic acid mono and C 2-C 12The binary aliphatic alcohol monomer constitute, it accounts for the 0.5-99.5% of said branching segmented copolymer weight;

  • Said II segment is hydroxy-end capped side chain aliphatic poly ester oligomer or prepolymer, and it is by C 4-C 6Binary aliphatic acid mono and C 2-C 22Binary aliphatic alcohol monomer and/or C 3-C 12Aliphatics trivalent alcohol monomer and/or C 8-C 22The glycerin fatty acid ester monomer constitutes, perhaps by the C that contains side chain 3-C 18Binary aliphatic acid mono and/or C 4-C 12Aliphatics triprotic acid monomer and C 4-C 6The binary aliphatic alcohol monomer constitute, said II segment not necessarily is the condenses of epoxide, it accounts for the 0.5-99.5% of said branching segmented copolymer weight;

    Wherein, the weight percentage summation of I segment and II segment polyester prepolyer is 100%.

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