Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1996-02-22
1998-06-30
Niland, Patrick D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
1563311, 1563317, 524590, 528 49, 528 60, 528 66, C09J 400, C08J 300, C08K 320, C08L 7500
Patent
active
057734909
ABSTRACT:
Pressure sensitive adhesives for transdermal absorption formulations comprising a segmented polyurethane, which can control dissolution and a releasing property of drugs of various kinds which are solid at normal temperature; said segment being an alkylene oxide chain which is in a liquid state at a temperature of around normal temperature to around body temperature, and said segment containing a hydrophilic alkylene oxide chain and a hydrophobic alkylene oxide chain, or comprising one or both of them and an alkylene oxide chain in which a hydrophilic moiety and a hydrophobic moiety are present in the mixed manner.
REFERENCES:
patent: 3796678 (1974-03-01), Bartizal
patent: 3939123 (1976-02-01), Matthews et al.
patent: 4855077 (1989-08-01), Shikinami et al.
patent: 5045601 (1991-09-01), Capelli et al.
Supplementary European Search Report for Application No. EP 91 91 8940.
Hata Kunihiro
Shikinami Yasuo
Niland Patrick D.
Takiron Co., Ltd.
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