Silicone film former for delivery of actives
US8968773B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2007 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Jun 1, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention provides: a cross-linkable therapeutic composition comprising a) a saccharide-siloxane copolymer; b) a crosslinking agent; c) one or more active/inactive ingredients; and d) optionally, a solvent, or solvent mixture, wherein the saccharide-siloxane copolymer has the following formula: R2aR1(3-a)SiO—[(SiR2R1O)m-(SiR12O)n]y-SiR1(3-a)R2a that is further formulaically defined and wherein the saccharide-siloxane copolymer is a reaction product of a functionalized organosiloxane polymer and at least one hydroxy-functional saccharide such that the organosiloxane component is covalently linked via a linking group to the saccharide component; films; and methods related thereto. The composition has therapeutic properties. The invention also provides articles of manufacture including topical and transdermal agent delivery patches comprising the novel film-forming composition and/or films.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.