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US 5,372,819 AGranted
Tramsdermal drug delivery device
AssigneeMinnesota Mining and Manufacturing Company
InventorsKristin J. Godbey, Philip G. Martin
Life of this patent
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Abstract
Polymer blends containing a very low density polyethylene copolymer of ethylene and 1-butene, 1-hexene, or 1-octene and about 15 to about 600 parts by weight of a linear low density polyethylene copolymer of ethylene and 1-octene, based on 100 parts by weight of the very low density polyethylene copolymer.
Claims14
A transdermal drug delivery device comprising:
- a flexible backing bearing on at least part of one surface thereof a carrier comprising a therapeutically effective amount of a drug, wherein the backing comprises a polymer blend in the form of a film, said polymer blend comprising:
- (i) a very low density polyethylene random copolymer comprising about 80 to about 95 mole percent ethylene and a total of about 5 to about 20 mole percent of a comonomer selected from the group consisting of 1-butene, 1-hexene, 1-octene, and a combination of two or more thereof;
- and
- (ii) about 15 to about 600 parts by weight, based on 100 parts by weight of the very low density polyethylene random copolymer, of a linear low density polyethylene random copolymer comprising about 92 to about 98 mole percent ethylene and about 2 to about 8 mole percent 1-octene.
1 more element
Dependencies are inferred from the claim text.