Henry M Grotta

US Patent:

44366256, Mar 13, 1984

Filed:

Nov 9, 1981

Appl. No.:

6/319607

Inventors:

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.

US Patent:

45591822, Dec 17, 1985

Filed:

Nov 9, 1981

Appl. No.:

6/319608

Inventors:

Henry M. Grotta - Delaware OH

Assignee:

Buffalo Color Corporation - West Paterson NJ

International Classification:

C07C14364

US Classification:

260509

Abstract:

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.

US Patent:

41284291, Dec 5, 1978

Filed:

Jan 6, 1977

Appl. No.:

5/757240

Inventors:

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.

US Patent:

41772458, Dec 4, 1979

Filed:

May 24, 1978

Appl. No.:

5/908806

Inventors:

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).

US Patent:

44745958, Oct 2, 1984

Filed:

Mar 10, 1983

Appl. No.:

6/472052

Inventors:

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.