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Block-graft copolymer

  • US 4,803,243 A
  • Filed: 03/25/1987
  • Issued: 02/07/1989
  • Est. Priority Date: 03/26/1986
  • Status: Expired due to Fees
First Claim
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1. A block-graft copolymer comprising:

  • a polymer block having a repeating unit represented by General Formula (I);

    ##STR13## wherein R1 represents a hydrogen atom, methyl group or ethyl group;

    R2 and R3 may be the same or different and each represent an alkyl group having 1 to 3 carbon atoms or phenyl group;

    m represents an integer of 0 to 4; and

    A represents any one of polymer residual groups represented by General Formulas (II) to (IV) shown below, ##STR14## wherein R4 may be the same or different and each represent methyl group, ethyl group or phenyl group;

    R5 is as defined for R4 or represents a group represented by the formula --Si(R4)3 ; and

    n is an integer of 1 to 1,000, ##STR15## wherein R6 represents a hydrogen atom or methyl group; and

    B represents a group represented by the formula --COOR2, where R2 is as defined above, ##STR16## --CH═

    CH2 or --C(CH3)═

    CH2 ;

    Y represents cumyl group, n-butyl group, s-butyl group or benzophenone residual group; and

    n is as defined above, ##STR17## wherein Y represents cumyl group, n-butyl group or s-butyl group, and n is as defined above,and at least one of polymer blocks having a repeating unit represented by General Formula (V);

    ##STR18## wherein R7 represents a hydrogen atom, methyl group or ethyl group;

    M represents at least one selected from a group represented by the formula --CH═

    CH2, --C(CH3)═

    CH2, --COOCH3 or --COOC2 H5 and phenyl group.

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