Invention Grant
- Patent Title: Thermoplastic polyurethane film for delivery of active agents to skin surfaces
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Application No.: US15520661Application Date: 2015-10-23
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Publication No.: US10905646B2Publication Date: 2021-02-02
- Inventor: Nancy S. Marchant , Pallavi Kulkarni , Anthony J. Walder , Paul M. Basone , Shawn Lankowski , Juan Cebrián Puche , Sandra Mendez , Mireia Martin
- Applicant: Lubrizol Advanced Materials, Inc.
- Applicant Address: US OH Cleveland
- Assignee: Lubrizol Advanced Materials, Inc.
- Current Assignee: Lubrizol Advanced Materials, Inc.
- Current Assignee Address: US OH Cleveland
- Agency: Fay Sharpe LLP
- International Application: PCT/US2015/057084 WO 20151023
- International Announcement: WO2016/069396 WO 20160506
- Main IPC: C08G18/48
- IPC: C08G18/48 ; A61K8/00 ; A61K8/87 ; A61K47/34 ; A61K9/70 ; A61K8/34 ; A61K8/368 ; A61K8/42 ; A61K8/64 ; A61K8/73 ; A61Q19/02 ; A61Q19/08 ; A61K9/00 ; C08G18/66 ; C09D175/04 ; C08G18/75 ; A61K8/49 ; C08G18/73 ; C08G18/32

Abstract:
A polymer film suited to use as a face mask or transdermal patch includes at least 30 wt. % of a thermoplastic polyurethane polymer which is the reaction product of a first polyether polyol having a molecular weight of at least 3000 daltons, optionally, a second polyether polyol having a molecular weight of no more than 2500 daltons, at least one of a third polyol having a molecular weight of up to 800 daltons, and a chain extender, a diisocyanate, optionally, a catalyst. The film includes up to 5 wt. % water.
Public/Granted literature
- US20170319462A1 THERMOPLASTIC POLYURETHANE FILM FOR DELIVERY OF ACTIVE AGENTS TO SKIN SURFACES Public/Granted day:2017-11-09
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