Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Conjugate or complex
Patent
1992-03-16
1994-03-01
Rollins, John W.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Conjugate or complex
A61K 3578
Patent
active
052905543
ABSTRACT:
An extracting agent, preferably sodium hydroxide solution containing 0.2 to 0.7% of NaOH, is allowed to flow from bottom to top through a bed of the comminuted peat and is removed above the bed, at a rate such that the flow remains laminar and the extract obtained remains essentially free of entrained particles of the peat to be extracted. If appropriate, fresh extracting agent is added and the extracting agent is allowed to flow once more through the bed, preferably is recirculated several times. An apparatus for carrying out the process has at least one storage tank for the extracting agent (NaOH), at least one extraction tank (E) and at least one circulation tank (Z) for the extracting agent enriched with extract, feed pipes in which pumps (P) are arranged leading both from the storage tank and from the circulation tank (Z) into the lower pipe from each extraction tank (E), while the discharge pipe from each extraction tank (E) leads from its upper part and enters the associated circulation tank (Z).
REFERENCES:
patent: 3903267 (1975-09-01), Miller et al.
patent: 4229442 (1980-10-01), Pinckard
patent: 4272527 (1981-06-01), Belkevich et al.
patent: 4618496 (1986-10-01), Brasseur
Gersz Tadeusz
Kukla Ryszard
Ritter Stanislawa
Skrzyszewska Malgorzata
Tolpa Stanislaw
Rollins John W.
Torf Establishment
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