Beneficial agent delivery systems

• US 7,723,285 B2
• Filed: 07/20/2005
• Issued: 05/25/2010
• Est. Priority Date: 07/20/2004
• Status: Active Grant

• Current Assignee: Michigan Molecular Institute, Quest International Flavors And Fragrances Inc.
• Original Assignee: Michigan Molecular Institute, Quest International Flavors And Fragrances Inc.
• Inventors: Fadel, Addi R., Mattila, Jill M., Nowak, Robert M., Dvornic, Petar R., Bruza, Kenneth J.
• Primary Examiner(s): Eashoo; Mark
• Assistant Examiner(s): Godenschwager; Peter F
• Application Number:
  US11/185,128
• Publication Number:
  US 20060018977A1
• Time in Patent Office: 1,770 Days
• Field of Search: 512/1, 512/2, 977/754
• US Class Current: 512/1
• CPC Class Codes: A01N 25/10 Macromolecular compounds
• CPC Class Codes: Y10S 977/754 Dendrimer, i.e. serially branching or "tree-like" structure

Abstract

An improved fragrance delivery system capable of providing controlled release of fragrance molecules in various consumer products is composed of a polymer having covalently bound fragrance moieties that are releasable in the form of fragrance molecules. Certain embodiments comprise globular polymer particles in which unbound fragrance molecules are occluded, absorbed and/or adsorbed. Certain other embodiments incorporate fragrance monomer units, which achieve reduced residuals upon complete release of the fragrance.

Claims

1. A hyperbranched silyl hydroxyol polymer.

2. A hyperbranched silyl hydroxyol of claim 1 that is a reaction product of a trichiorosilane and hydroxyol.