Topical composition comprising a film-forming polymer for delivering an active ingredient to skin
US9345774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2013 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jul 5, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/141
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A sprayable film-forming pharmaceutical composition for dermal application comprises at least one therapeutically active ingredient dissolved in a pharmaceutically acceptable propellant selected from the group consisting of dimethyl ether, diethyl ether and methylethylether, and a mixture of dimethyl ether, diethylether and methylethyl ether, and a second propellant selected from C3-5 alkanes, hydrofluoroalkanes, hydrochloroalkanes, fluoroalkanes and chlorofluoroalkanes, the propellant being present in an amount of 50-99.5% w/w of the composition, the composition further comprising a film-forming polymer, a plasticizer and an oily release-enhancing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.