Chemistry: molecular biology and microbiology – Micro-organism – per se ; compositions thereof; proces of...
Patent
1992-03-26
1994-02-22
Robinson, Douglas W.
Chemistry: molecular biology and microbiology
Micro-organism, per se ; compositions thereof; proces of...
435246, 525404, 528393, C12N 100, C12N 134, C08F28306, C08G 6502
Patent
active
052887898
ABSTRACT:
A method is disclosed for controlling foam in a fermentation broth by adding to the fermentation broth an effective amount of a composition comprising a compound corresponding to the formula: ##STR1## wherein AO is an oxyalkylene copolymer moiety of oxypropylene and oxyethylene units, each oxyalkylene copolymer moiety having a molecular weight of at least about 300 and an oxypropylene to oxyethylene molar ratio of from about 2:1 to about 10:1, n is an integer from about 1 to about 20, R is an alkyl group of from about three to about twelve carbon atoms, and R' is methylene or substituted methylene. The composition can be added to fermentation broths to prevent the formation of foam or to reduce foam which has already formed. The above defined composition is also disclosed in a form free of solvent, such as xylene.
REFERENCES:
patent: 3862243 (1975-01-01), Bellos
patent: 4612352 (1986-09-01), Schafer
BIO-1395 Brochure, .COPYRGT.Copyright 1988, Petrolite Corporation.
Petrolite Corporation
Robinson Douglas W.
Solomon Kenneth
Ware Deborah K.
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