Dispensing – With discharge assistant – Fluid pressure
Patent
1975-08-12
1977-01-04
Czaja, Donald E.
Dispensing
With discharge assistant
Fluid pressure
260 285A, 260 285B, 260 291SB, 260 318G, 260 328A, 260 332R, 260 334R, 260 334PQ, 260 336AQ, 260 336PQ, 260759, 260760, 260761, B65D 8314, C08K 501, C08K 505, C08K 506
Patent
active
040008363
ABSTRACT:
This invention relates to pressurized dispensers such as aerosol containers. The invention provides such dispensers containing a reservoir of an organic substance which dissolves at least 15% of its own weight of propellant at room temperature, the reservoir being capable of releasing the dissolved propellant on dispensing the contents of the container. The organic substance is an extended rubber. Various organic substances can be used to extend the rubber, and various rubbers can be extended. The extenders are generally less expensive than the unextended rubbers, and the extended rubbers can often dissolve as much, or in some cases more propellant than the same weight of unextended rubber. This provides a cost advantage over unextended rubbers. The reservoirs enable the head-space pressure in the dispenser to be maintained substantially constant throughout dispenser life, and foams, for example, of substantially constant density to be obtained.
REFERENCES:
patent: 3858764 (1975-01-01), Watson
James Ronald
Williams Jillian A.
Czaja Donald E.
Fletcher H. H.
Wilkinson Sword Limited
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