Pressurized dispensers

Details Pressurized dispensers Pressurized dispensers

1974-08-14

1976-08-03

Czaja, Donald E.

Dispensing

Gas or vapor dispensing

260 28R, 260 285A, 260 285B, 260 291SB, 260 312N, 260 328A, 260 328N, 260 332R, 260 334R, 260 334PQ, 260 336R, 260 336A, 260 336AQ, 260 336PQ, 260 338R, 260 338UA, B67B 724, C08K 501

Patent

active

039724468

ABSTRACT:
The present invention provides pressurized dispensers comprising a container provided with a valve-controlled outlet and containing a concentrate and a reservoir holding propellant. The reservoir comprises a crystalline organic polymer which is capable of holding propellant therein in such a way that the vapor pressure over the held propellant is reduced below that over the pure propellant, the polymer being capable of holding at least 15% of its own weight of propellant at room temperature, and the reservoir being capable of releasing propellant within the container as the contents of the container are dispensed.

REFERENCES:
patent: 2964083 (1960-12-01), Pfau et al.
patent: 3122284 (1964-02-01), Miles
patent: 3332903 (1967-07-01), Kavalir
patent: 3777934 (1973-12-01), Meeks et al.
patent: 3858764 (1975-01-01), Watson
Sanders--Principles of Aerosol Technology (van Nostrand) (N.Y.) (1970), p. 73.

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