Nail polish
US4097589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1977 |
| Grant date | Jun 27, 1978 |
| Priority date | — |
| Expiry date | Jul 11, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q3/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A liquid nail polish which imparts improved flexural strength to the human nail and inhibits splitting when applied thereto as a coating. The nail polish formulation is characterized by the inclusion therein, as a dissolved component, of a small but effective amount of a terpolymer comprising a copolyamide consisting essentially of recurring units of equimolecular proportions of caprolactam, laurolactam and hexamethylene diamine adipate. Typically, said terpolymer is first dissolved in a mixture of trichloroethane and ethyl alcohol, and this liquid solution is added in a small quantity to a stock liquid nail polish formulation so that a final formulation containing a small but effective amount of said dissolved terpolymer is produced, e.g. a formulation containing in the range of about 0.001 to 0.1% by weight of said dissolved terpolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.