Compositions – Inorganic luminescent compositions – Tungsten containing
Patent
1980-05-14
1982-10-19
Lovering, Richard D.
Compositions
Inorganic luminescent compositions
Tungsten containing
252359R, 252 69, C09K 330, B01F 320, B01J 1300
Patent
active
043549551
ABSTRACT:
A propellant comprising liquified hydrocarbon which is propane, butane or isobutane with 2 to 20% of a chlorohydrocarbon which is dichloromethane or 1,1,1-trichloroethane is prepared by passing the liquified hydrocarbon through a coarse filter to separate oily impurities and then through a fine filter to remove odor causing impurities while simultaneously feeding the chlorohydrocarbon into the hydrocarbon. There is also described an apparatus for carrying out the process comprising feeding means, coarse filtering means, fine filtering means, gas sterilization filtering means, additional fine filtering means, a pressure container, pumping means on the outlet side of the pressure container and a pressure line connecting all of these elements of the apparatus.
REFERENCES:
patent: 3102101 (1963-08-01), Hawley et al.
patent: 3822145 (1974-07-01), Liebowitz et al.
patent: 3884828 (1975-05-01), Butler
patent: 4017418 (1977-04-01), Crompton et al.
patent: 4111827 (1978-09-01), Thompson et al.
Fieser et al., Organic Chemistry, D. C. Heath and Co., Boston, 1944, p. 149.
Aerosol Age, May 1963, p. 30.
Lovering Richard D.
von Treu AG
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