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US 5,177,165 AGranted
Surface-active macromonomers
AssigneeBausch & Lomb Incorporated
InventorsPaul L. Valint, Jr., Joseph A. McGee
Life of this patent
Estimating the term…
Abstract
A new class of polymerizable surfactants, useful for modifying the surfaces of polymeric objects, which are described by the formula: DC[A.sub.x B.sub.y ] wherein A is at least one ethylenically unsaturated hydrophilic monomer, B is at least one ethylenically unsaturated hydrophobic monomer, C is a functional chain transfer agent, D is an ethylenically unsaturated end group, y is within the range from about 0.1 to about 0.9, and x+y=1. Also disclosed are random copolymer precursors of such polymerizable surfactants.
Claims14
A surface active random copolymer described by the formula:
- 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.
Dependencies are inferred from the claim text.