Roll-on application of aqueous microencapsulated products
US4605554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1985 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Jan 17, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/874
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A material (14) such as an antiperspirant contained in a shear-sensitive, free-flowing, powdery, suspension of aqueous droplets stabilized by a barrier of very fine, hydrophobic metal oxide is dispensed from a roll-on applicator. As the ball (18) is rotated, an adherent film (22) of the suspension passes through the annular outlet (20) and is subjected to shear forces. The suspension coalesces into a film (24) of cream or lotion. The suspension exhibits excellent flowability through the outlet (20) without any binding or fouling and the lotion or cream film has good adhesion to the ball. Application results in a dry feeling on the skin of the subject, a short dry-out time and excellent antiperspirant efficacy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.