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Surface-active macromonomers

  • US 5,177,165 A
  • Filed: 12/11/1991
  • Issued: 01/05/1993
  • Est. Priority Date: 11/27/1990
  • Status: Expired due to Term
First Claim
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1. A surface active random copolymer described by the formula:

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    space="preserve" listing-type="equation">C[A.sub.x B.sub.y ]wherein A is a monomer unit derived from at least one ethylenically unsaturated hydrophilic monomer selected from the group consisting of ethylenically unsaturated polyalkylenes, polyacrylamides, polyvinylpyrollidones, polyvinyl alcohols, poly(HEMA), and N-alkyl-N-vinyl acetamide, B is a monomer unit derived from at least one ethylenically unsaturated hydrophilic monomer, C is a functional chain transfer agent, y is within the range from about 0.1 to about 0.9, and x+y=1.

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