Nalco Chemical Company

Other

John A Romberger

Charles C Payne

Robert E Henry

Daniel A Meier

Richard P Carr

Paul F Richardson

Robert D Jones

Laura J Blaser

Richard L Chapman

Leo D Barber

Fred B Breakey

Suzanne N Dunn

Claude Jackson

Rudolph Seidl

Norman Godin

A colloidal silica slurry comprising: a low metals ammonium-stabilized silica sol having the following characteristics: SiO.sub.2 present in the range between about 15 to about 50 weight percent; a pH in the range between about 8.5 to about 11.3; a particle diameter in the range between about 4.0 to about 130 nm; aluminum, as Al, present in an amount less than about 100 ppm, based on SiO.sub.2 ; iron, as Fe, present in an amount less than about 50 ppm, based on SiO.sub.2 ; potassium, as K, present in an amount less than about 25 ppm, based on SiO.sub.2 ; and sodium, as Na, present in an amount less than about 500 ppm, based on SiO.sub.2 ; and a bactericide, a polishing rate accelerator which differs from the bactericide, and/or a sodium chlorite or sodium hypochlorite biocide. Optionally, a fungicide may also be added to the colloidal silica slurry to inhibit fungi growth.

Low sodium, low metals silica polishing slurries

An aqueous slurry of comprising a plurality of synthetic fibers and from 0.1-10 percent by weight based on the weight of the fibers of a water-soluble acrylamide polymer dispersant containg at least 5 percent by weight of 2-acrylamido-2-methylpropanesulfonic acid units, said polymer having an RSV of at least 10.

Acrylamide-2-acrylamido-2-methylpropanesulfonic acid polymers as

Colloidal silica prevents the interaction of cationic softeners and water-soluble polymers which are present in the manufacture of fiberglass mats.

Silica as blocking agent for fiberglass sizing

A method of preventing the interaction of cationic softeners coated upon the surfaces of glass fibers with anionic polymers contained in aqueous baths used in forming the glass fibers into mats which comprises treating the fiber with at least 3 parts per million, of a water-soluble anionic vinyl polymer having a molecular weight range of from 500-50,000.

Use of low molecular weight water-soluble anionic polymers as blocking

A stable aqueous slurry of particles which comprises:

Compositions for suspending solid particles in aqueous media

A bracket board is disclosed for supporting a bracket in which a base has disposed thereon a plurality of parallel horizontal facing panels. Each of the facing panels is separated from an adjacent facing panel by a horizontal groove. A reinforcing Z-section member is disposed in each of the horizontal grooves with the upper arm of each Z-section member being sandwiched between the base and an undercut on the lower edge of each facing panel.

Bracket board

Water soluble zinc copolymer complexes of acrylic acidethylacrylate copolymers are useful in preventing corrosion in aqueous recirculating systems.

Polymer-zinc corrosion inhibitor

A method of enhancing corrosion inhibition of inorganic corrosion inhibitors, particularly stabilized phosphate corrosion inhibitors, when used in high hardness waters containing at least 800 ppm total hardness which comprises adding to the high hardness waters a combined product which includes both the inorganic corrosion inhibitor system and an effective amount of a water-soluble acrylic acid:acrylamide copolymer having an acrylic acid:acrylamide weight ratio between 1:4 and 1:2 and having a molecular weight between 1,000-25,000.

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Oak Park, IL, United States of America

John A Romberger