Drew Chemical Corporation

Frederick R Mahn

Joseph J Baron, Jr

Edward G Knapick

Lora J Bogdany

Edward M Antonucci

Joseph P Cosentino

Clyde S Scanley

David R Sexsmith

Emil A Ippolito

Kenneth Breindel

A synergistic microbiocide comprising a member selected from the group consisting of (1) an N-alkyl (C.sub.8 -C.sub.30) dimethylbenzylammonium halide and (2) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:10-10:1 in combination with (3) a bicyclic polyoxymethylene-oxaazolidine having the formula: ##STR1## in which each R represents hydrogen, an alkyl of 1-6 carbons, phenyl, halophenyl or --(CH.sub.2 O).sub.m CH.sub.2 OH in which m is 0-2 and n is 0-4, the ratio of (1) or (2) to (3) being 1:10-10:1 by weight.

Synergistic microbiocidal composition containing a mixture of a

A synergistic microbiocidal composition comprising as Component (1) a 4-isothiazolin-3-one and as Component (2) a bicyclic polyoxymethyleneoxazolidine of the formula: ##STR1## in which each R represents hydrogen, an alkyl of 1-6 carbons, phenyl, halophenyl or --(CH.sub.2 O).sub.m CH.sub.2 OH in which m is 0-2 and n is 0-4; Component 1/Component 2 being in a weight ratio of at least 1:1.

Synergistic microbiocidal compositions containing a mixture of a

A synergistic microbiocidal composition for inhibiting bacterial growth comprising Component (1) having the formula: ##STR1## in which R represents hydrogen or a halogen atom, and alkali ammonium and amine salts thereof; and Component (2) having the formula: ##STR2## in which each R represents hydrogen, an alkyl of 1-6 carbons, phenyl, halophenyl or --(CH.sub.2 O).sub.m CH.sub.2 OH in which m is 0-2 and n is 0-4; Component 1/Component 2 being in a weight ratio of at least 1:1.

A synergistic microbiocide comprising a member selected from the group consisting of (1) an N-alkyl (C.sub.8 -C.sub.30) dimethylbenzylammonium halide and (2) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:10-10:1 in combination with (3) a bicyclic polyoxymethyleneoxaazolidine having the formula: ##STR1## in which each R represents hydrogen, an alkyl of 1-6 carbons, phenyl, halophenyl or --(CH.sub.2 O).sub.m CH.sub.2 OH in which m is 0-2 and n is 0-4, the ratio of (1) or (2) to (3) being 1:10-10:1 by weight.

Synergistic microbiocidal composition containing a mixture of a bicyclic

A synergistic microbiocidal composition for inhibiting bacterial growth comprising as Component (1) a polycondensation product of acrolein/formaldehyde in a molar ratio of 1:1-10:1 and as Component (2) an N-alkyl(C.sub.8 -C.sub.30) dimethylbenzyl ammonium halide, Component (1) and Component (2) being in a weight ratio of about 1:10-10:1.

Synergistic microbiocidal compositions containing a mixture of a N-alkyl

In crystallization of a carbonate of sodium from aqueous solutions, a water soluble homopolymer of oxyethylene or block copolymer of oxyethylene and oxypropylene is employed as a defoamer. The presence of the defoamer in the resulting sodium carbonate does not adversely interfere with carbon dioxide absorption in subsequent production of sodium bicarbonate.

Foam prevention in sodium carbonate crystallization

A dispersant composition comprising (1) a polysiloxane-polyoxyalkylene copolymer; and (2) an oxyalkylene polymer, in which the oxyalkylene of (1) and (2) is oxyethylene and/or oxypropylene. The composition disperses contaminants in aqueous systems without foaming, and also cleanses fouled surfaces.

Process for dispersing contaminants in circulating water or polar

Non-foaming dispersing composition

A solid non-foaming dispersing composition of (1) hydrophobic silica; (2) block copolymer of polyoxyethylene and polyoxypropylene wherein the chain is terminated, at both ends, by polyoxypropylene; and (3) an organic spreading liquid. A surfactant may also be employed. A tablet form of the composition is described.

Growing community of inventors

Verona, NJ, United States of America

Frederick R Mahn