CRC-free medicinal aerosol formulations of 1,1,1,2-tetrafluoroethane (134A) with polar adjuvant
First Claim
1. A medicinal aerosol formulation comprising 0.01-5% medicament by weight of the formulation, 1,1,1,2-tetrafluoroethane in an amount of at least 50% by weight of the formulation, less than 5% surface active agent by weight of the formulation, and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane, and wherein said formulation is free of chlorofluorocarbons and free of propellants CHClF2, CH2F2 and CF3CH3.
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Accused Products
Abstract
A medicinal aerosol formulation including 0.01-5% medicament, at least 50% by weight 1,1,1,2-tetrafluoroethane (134a), less than 5% surface active agent, and at least one compound having higher polarity than 1,1,1,2-tetrafluoroethane, and which is free of chlorofluorocarbons and propellants CHClF2, CH2F2 and CF3CH3.
79 Citations
17 Claims
- 1. A medicinal aerosol formulation comprising 0.01-5% medicament by weight of the formulation, 1,1,1,2-tetrafluoroethane in an amount of at least 50% by weight of the formulation, less than 5% surface active agent by weight of the formulation, and at least one compound having a higher polarity than 1,1,1,2-tetrafluoroethane, and wherein said formulation is free of chlorofluorocarbons and free of propellants CHClF2, CH2F2 and CF3CH3.
Specification