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Polysiloxane-polylactone block copolymers

  • US 5,235,003 A
  • Filed: 08/31/1990
  • Issued: 08/10/1993
  • Est. Priority Date: 01/04/1985
  • Status: Expired due to Term
First Claim
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1. A method of producing polymer blends having modified surface properties, comprising the step of polymerizing monomer starting materials for a first polymer in the presence of a linear polysiloxane-polylactone second polymer having the formula:

  • ##STR8## wherein n is an integer from 1 to about 200;

    R1, R2, R3, and R4 are independently linear or branched alkyl, alkenyl, haloalkyl, or haloalkenyl of 1 to 6 carbon atoms;

    aryl of 5 to 7 carbon atoms;

    aralkyl of 6 to 8 carbon atoms;

    A and A'"'"' are independently ##STR9## p is an integer from 0 to 6;

    m is an integer from 1 to about 250;

    R6 is hydrogen or linear or branched alkyl or 1 to 6 carbon atoms;

    R5 '"'"' is --R7 --O--, --R7 --NR8 --, ##STR10## R5 is --O--R7 --, --NR8 --R7 --;

    ##STR11## R7, R9 and R11, are independently --CH2 .sbsb.q, q is an integer from 1 to 20;

    ##STR12## where r, t and w are independently integers from 1 to 6 and v is an integer from 1 to about 100;

    R8, and R10 are independently hydrogen or alkyl of 1 to 6 carbon atoms.

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