Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Liposomes
Patent
1988-03-21
1991-04-02
Robinson, Douglas W.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Liposomes
A61K 3722
Patent
active
050046110
ABSTRACT:
Pro-liposome compositions comprise membrane lipids such as lecithin or distearyl dimethylammonium chloride, water-miscible solvents such as ethanol, optionally a minor proportion of water, and optionally fatty acid esters and drugs. On addition to excess water they spontaneously form dispersions of liposomes having high void volumes and high drug entrapment ratios.
Aerosol compositions are presented in a volatile liquid propellant. On being sprayed they form an aerosol of droplets which, on contact with aqueous media, spontaneously form liposome dispersions.
REFERENCES:
patent: 4590060 (1986-05-01), Ehrenfeld
Chemical Abstracts 105: 12154c (1986).
Chemical Abstracts 103: 27287f (1985).
Chemical Abstracts 103: 156792r (1985), Hauser et al.
Henley III Raymond J.
Phares Pharmaceutical Research NV
Robinson Douglas W.
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