Petrolite Corporation

Other

Kevin J McCarthy

David J Poelker

Charles W Burkhardt

Steven P Holmes

Martin A Giarrocco, Iii

A method for suppressing the viscosity of a calcium exotoxin slurry is disclosed. The method comprises adding to the slurry a viscosity-suppressing amount of a copolymer of a vinyl-based monomer and 2-acrylamide-2-methylpropane sulfonic acid or its sodium salt. The copolymer has a weight average molecular weight of from about 1,000 to about 10,000. A slurry comprising calcium exotoxin and about 0.25 to about 2.5 percent by weight of such copolymer is also disclosed.

Method for suppressing the viscosity of bioinsecticide slurries and

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.

Foam control in fermentation broths with a condensate of alkylphenol and

An apparatus and a method for holding, rotating and positioning a jack for the purpose of attaching said jack to one side of a structural support. The apparatus comprises a base and a holder. The base has a device to mount the base on the structural support. The holder is pivotally connected at one end to the base for displacement between a first location above said structural support and a second location at said one side. The holder has a receiver operable in a closed position to retain the jack as the holder is pivoted between said locations in order to position the jack for attachment to said one side of the structural support. The receiver is actuatable to an open position for removal of the holder from the jack after said attachment. The holder is displaceable from said second location back to said first location for removal of the apparatus from the support.

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University City, MO, United States of America

Kevin J McCarthy