Henry M. Grotta - Delaware OH Perry J. Gaughan - Columbus OH
Assignee:
Buffalo Color Corp. - West Paterson NJ
International Classification:
B01D 1104
US Classification:
210634
Abstract:
A method for removing residual cresidine from impure p-cresidine sulfonic acid which impure p-cresidine sulfonic acid contains from above about two parts per billion to about 1500 parts per million of cresidine. The method comprises contacting an aqueous solution of the impure p-cresidine sulfonic acid with sufficient liquid hydrocarbon of from five to eighteen carbon atoms for a sufficient time to extract the cresidine from the p-cresidine sulfonic acid to a concentration of less than two parts per billion of cresidine in the p-cresidine sulfonic acid.
Method For Purifying Cresidine Sulfonic Acid By Resin Extraction
A method for removing residual cresidine from impure p-cresidine sulfonic acid which impure p-cresidine sulfonic acid contains from above two parts per billion to about 1500 parts per million of cresidine. The method comprises contacting an aqueous solution of the p-cresidine sulfonic acid with a sufficient quantity of particles of a crosslinked lipophilic porous resin for a sufficient time to reduce the concentration of p-cresidine in the cresidine sulfonic acid to less than 2 parts per billion.
Antifouling Quaternary Halide Salts Containing A Triorganotin Ether Moiety
Robert E. Wyant - Delaware OH Henry M. Grotta - Delaware OH
Assignee:
Sankyo Organic Chemicals Company Limited - Kawasaki
International Classification:
C09D 514
US Classification:
106 15R
Abstract:
Disclosed are the usage, preparation, and evaluation of marine antifouling quaternary halide salts containing a cation portion which includes a trialkyltin ether moiety linked to a carbon atom at least two carbon atoms removed from the quaternized nitrogen atom. Taught as providing exceptional marine fouling inhibition are the quaternary salts of benzyl bromide and tertiary amines containing a tributylstannyl ether moiety at least two carbon atoms removed from the amino nitrogen atom with illustrated specific examples including the quaternary salts of benzyl bromide and 2-dimethylamino-2-methyl-1-propyl tributylstannyl ether, benzyl bromide and 1-dimethylamino-2-propyl tributylstannyl ether, benzyl bromide and 2-[N-pyrrolidinyl]ethyl tributylstannyl ether, and benzyl bromide and 2-diisopropylaminoethyl tributylstannyl ether. For antifouling purposes the quaternary salt is blended or dissolved in a resinous polymer component of a marine paint composition applied to an article's surface subsequently to be immersed in ocean water.
Harvey S. Rosenberg - Columbus OH Henry M. Grotta - Delaware OH
Assignee:
Battelle Development Corporation - Columbus OH
International Classification:
C01B 1700 B01D 500 C09K 1500
US Classification:
423242
Abstract:
Suppression of calcium sulfate scale in wet lime and limestone flue gas desulfurization (FGD) scrubbers and mist eliminators is accomplished by scrubbing in the presence of an oxidation inhibitor comprising gaseous nitric oxide (NO).
Fertilizer Product And Process For Making And Using It
William T. Lawhon - Lexington KY Henry M. Grotta - Delaware OH
Assignee:
International Spike, Inc. - Lexington KY
International Classification:
C05C 902
US Classification:
71 28
Abstract:
A process for making controlled release fertilizer product containing an increased amount of sustained-release nitrogen includes the step of mixing a partly water soluble thermoplastic binder, and urea-formaldehyde condensate and a pH modifier. The amount of pH modifier should be sufficient to bring the pH of the shaped fertilizer product to the range from about 6 to about 12. The mixture is subjected to such conditions including temperature and pressure so as to produce a shaped fertilizer product. The resulting shaped fertilizer product includes approximately the same amount of sustained-release nitrogen as the urea-formaldehyde condensate in the mixture.
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