Nalco Chemical Company

Diatec Polymers

Manuel Slovinsky

Dodd W Fong

Edwin T Sortwell

Moneeb Zakaria

Joseph Matt

Alan R Mikkelsen

Kenneth G Phillips

John R Hurlock

Edward G Ballweber

Radhakrishnan Selvarajan

Bhupati R Bhattacharyya

Joseph A Maciaszek

Raymond J Wachala

Michael L McCullar

Lawrence E Beske

A method and apparatus for rapidly dissolving particles of dry water soluble polymers or gums in water. A suspension of polymer particles is formed and subjected to conditions of high shear in a particle size reduction apparatus whereby the finely divided particles are forced into solution. Sufficient water is present that heat is dissipated and molecular degradation of the polymer is avoided.

Method and apparatus for rapidly dissolving polymers in water

A method for rapidly dissolving particles of dry water soluble polymers or gums in water. A suspension of polymer particles is formed and subjected to conditions of high shear in a particle size reduction apparatus whereby the finely divided particles are forced into solution. Sufficient water is present that heat is dissipated and molecular degradation of the polymer is avoided.

Method of rapidly dissolving polymers in water

Novel polymeric compositions useful as thickeners and rheology modifiers for oil-in-water emulsion systems are disclosed. The water-soluble or swellable compositions described contain, prior to polymerization, from:

Terpolymer composition

Water-soluble aniline-formaldehyde-polyamine polymers provide excellent flocculants for low turbidity waters.

Cationic polymers suitable for reducing turbidity in low turbidity waters

An improved method for scavenging dissolved oxygen from alkaline waters which comprises using dihydroxy acetone catalyzed with at least 1 percent based on the weight of said dihydroxy acetone, of a catalyst from the group consisting of hydroquinone and a water-soluble compound of manganese.

1,3-Dihydroxy acetone as an oxygen scavenger for water

An improved aqueous defoamer composition of the type comprising from 70-90% by weight of a water-insoluble organic liquid, from 0.1 to about 20% of a hydrophobic silica suspended in the organic liquid, and from about 1 to about 20% of an oil-soluble spreading agent, the improvement which comprises utilizing as the hydrophobic silica a silica which has at least a portion of its surface esterified with a fatty epoxide. The invention also contemplates an improved method for hydrophobizing silica particles by reacting them in an organic liquid with a fatty epoxide.

Fatty epoxide hydrophobized silica as antifoams in brownstock washing

An improved method for scavenging dissolved oxygen from alkaline waters which comprises treating said waters with at least 10 ppm of methylene blue in its reduced or leuco base form.

Reduced methylene blue for oxygen removal

A process of stabilizing soil which comprises contacting such soil with an aqueous solution of a water-soluble diacrylate ester of a polyoxyalkylene glycol monomer, which solution also contains a water-soluble polymerization catalyst capable of polymerizing the monomer into a water-insoluble gel.

Grouting-soil conditioning systems using polyoxyethylene diacrylates

Water-based anti-blemish paints useful for coating the outside of tires prior to final shaping and curing is disclosed. Typical compositions have the following formula:

Water-based anti-blemish paint

A method of removing dissolved oxygen from boiler water which comprises adding to the water an oxygen scavenging amount of carbohydrazide.

Boiler additives for oxygen scavenging

As antifoulants in the processing of crude oil to minimize deposition of condensates and polymeric deposits on heat exchangers, compounds of the following structure have been utilized: ##STR1## X = OH, NH.sub.2, NHR, NHCH.sub.2 CHOHR (R = straight or branched chain alkyl containing 2 to 20, preferably 6 to 16, carbon atoms.)

Antifoulants for crude oil

Substituted succinic acids and salts thereof having the formula: ##STR1## where R is H or ##STR2## and M is H, alkali metal, or an amine, are useful as chelants and stabilizers for heavy metal ions.

Substituted succinic acid compounds and their use as chelants

Stable water-in-oil emulsions of water soluble ethylenically unsaturated polymers are prepared using as a water-in-oil emulsifying agent a partially esterified lower N,N-dialkanol substituted fatty amide. Additionally, from 5-50 weight percent of the surfactant may be from surfactants of the following classes:

Stable water-in-oil emulsion polymers with small particle size

Oil-in-water type emulsions of bis trichloromethyl sulfone which can be made from dimethyl sulfide and sodium hypochlorite. Emulsification is achieved by using the by-product aqueous brine solution from the formation reaction thereby avoiding the ecological problem of brine waste disposal and resulting in a simple one-pot type emulsion preparation procedure. The technique is also particularly well adapted to making mixed biocide concentrate formulations containing emulsified bis trichloromethyl sulfone.

Growing community of inventors

Woodridge, IL, United States of America

Manuel Slovinsky