Topical composition, topical composition precursor, and methods for manufacturing and using

  • US 6,756,059 B2
  • Filed: 08/20/2001
  • Issued: 06/29/2004
  • Est. Priority Date: 08/20/2001
  • Status: Expired due to Term
First Claim
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1. A method for manufacturing a topical composition, the method comprising steps of:

  • (a) melt processing a mixture to provide a topical composition precursor, the mixture comprising;

    (i) hydrophobic polymer composition comprising repeating pyrrolidone/alkylene groups, wherein the alkylene groups contain at least 10 carbon atoms;

    (ii) hydrophilic polymer composition comprising repeating carboxylic acid groups and/or repeating hydroxyl groups; and

    (iii) less than about 1 wt. % water; and

    (b) diluting the topical composition precursor to provide a water concentration of at least about 30 wt. % based on the weight of the topical composition.

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