Block copolymers with polydimethylsiloxane blocks

Block copolymers with polydimethylsiloxane blocks

  • CN 104,937,011 B
  • Filed: 01/17/2014
  • Issued: 12/29/2020
  • Est. Priority Date: 01/18/2013
  • Status: Active Grant
First Claim
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1. A block copolymer of formula I:

  • A{X-[O-C(O)NH-Y-NH-C(O)-O-M-B]k}n (I)whereinn is a number in the range of 1 to 40;

    k is 1 or 2;

    a is a poly (dimethylsiloxane) block;

    b is a polymer block consisting of ethylenically unsaturated monomers and optionally having end groups other than hydrogen;

    x is a divalent or trivalent radical having 2 to 20C atoms, which is saturated or unsaturated and optionally carries 1,2, 3 or 4 atoms selected from OH, COOH, CONH2

    C1-C4Alkoxy radical, C1-C4Substituents for alkoxycarbonyl and halogen;

    y is a saturated or unsaturated divalent hydrocarbon group having 2 to 20C atoms,m is a bond or C which may be interrupted by one or two groups which are not directly adjacent and are selected from O, C (═

    O) O and (C ═

    O) NH2-C10Alkylene, optionally with 1,2, 3 or 4 substituents selected from OH, COOH, CONH2

    C1-C4Alkoxy radical, C1-C4Substituents of alkoxycarbonyl groups and phenyl groups,wherein a is the only poly (dimethylsiloxane) block in the block copolymer.

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