George F Cowperthwaite

US Patent:

20030191338, Oct 9, 2003

Filed:

Oct 16, 2002

Appl. No.:

10/272144

Inventors:

Allen Johnston - West Chester PA, US
George Cowperthwaite - Coatesville PA, US

International Classification:

C07C069/00

US Classification:

560/004000

Abstract:

An alpha tocopherol is disclosed as a polymerization inhibitor effect against (meth)acrylate monomer polymerization in nail extension liquids. Alpha-tocopherol was found to inhibit polymerization of ethyl methacrylate.

US Patent:

60155493, Jan 18, 2000

Filed:

Apr 17, 1998

Appl. No.:

9/061948

Inventors:

George F. Cowperthwaite - Coatesville PA
Allen D. Johnston - West Chester PA
Susan C. Sheariss - Swedesboro NJ

Assignee:

Esschem, Inc. - Linwood PA

International Classification:

A61K 600
A61K 700
A61K 704

US Classification:

424 61

Abstract:

A method for improving--with an adhesion-promoting composition--adhesion of a synthetic monomeric or polymeric material (such as a curable acrylic monomer/polymerized acrylic system) to a keratinaceous substrate, as in, for example, the reshaping of fingernails or toenails. The adhesion-promoting composition comprises (A) an organic, dipolar, aprotic liquid carrier and, uniformly distributed throughout said liquid carrier, (B) pyromellitic dianhydride glycerol dimethacrylate adduct ("PMGDM"). The PMGDM isomer mixture which typically results when pyromellitic dianhydride is reacted with glycerol dimethacrylate is preferred, particularly in view of its high solubility in solvents of relatively low toxicity (e. g. lower aliphatic ketones). The adhesion-promoting composition can, if desired, be included in a nail-reshaping kit containing the materials and implements needed to reshape the nail plate.