Nalco Chemical Company

Kristy M Bailey

Kevin J Moeggenborg

Jeffrey R Cramm

James F Kneller

Gary S Furman, Jr

Martha R Finck

David P Workman

Winston Su

Christopher P Howland

Patrick J Marek

Mark R Miner

Glenn W Flasch

William H Lewis

A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble cross-linked polyamides prepared by condensation polymerization for binding various classes of ceramic materials.

Cross-linked polymide binders for ceramics manufacture

A method for binding ceramic materials in aqueous media is disclosed. The method utilizes water-soluble polyamides prepared by condensation polymerization for binding various classes of ceramic materials.

Polyamide binders for ceramics manufacture

A method for binding ceramic materials in aqueous media is disclose. The method utilizes water-soluble polyamides prepared by condensation polymerization for binding various classes of ceramic materials.

Improved halogen-free Yankee Dryer adhesives based on cross linked cat ionic polyaminoamide polymers are described. The adhesives are obtained by crosslinking a backbone cationic polymer formed by reacting a difunctional carboxylic acid with a polyamine containing at least one secondary amine, said crosslinking achieved by the use of a multi-functional aidehyde. The preferred adhesive is that obtained by reacting adipic acid with diethylenetriamine, at essentially equimolar ratios of from about 1.2: 1.0 to about 1.0: 1.2, and then crosslinking with a dialdehyde selected from glutaraldehyde, glyoxal, or mixtures thereof. Improved adhesion and peel strength are obtained when using the new materials as compared to materials now commercially used.

Cross-linked poly(aminoamides) as yankee dryer adhesives

Improved water absorbent polymers can be prepared by agglomerating acrylic acid gel polymer fines with small quantities of difunctional epoxides.

Process for producing improved superabsorbent polymer aggregates from

A method for reconstituting superabsorbent polymer fines which comprises the following steps: wetting the superabsorbent polymer fines with an aqueous solution sufficient to form an amorphous gel of the fines, grinding the gel, and drying the ground gel product; wherein the improvement is characterized by the addition of an aqueous solution containing a persulfate salt.

Reconstitution of superabsorbent polymer fines using persulfate salts

A method for reconstituting superabsorbent polymer fines comprising the following steps: wetting the superabsorbent polymer fines sufficient to form a continuous amorphous gel of the fines; grinding the gel; and drying the gel which has been around to form a superabsorbent polymer material. Drying can optionally be followed by grinding and classification of the reconstituted superabsorbent polymer fines to desired sizes.

Method for reconstituting superabsorbent polymer fines

A water-in-oil suspension polymerization process of the type comprising a process for preparing a water-insoluble polymer capable of absorbing water, aqueous salt solutions and blood, which utilizes as the suspending agent a cellulose ester or ether protective colloid, the improvement which comprises using as the protective colloid an oil-soluble, water-insoluble, polymeric surfactant instead of the cellulose derivatives, in an amount sufficient to stabilize the emulsion, said polymeric surfactant having the formula: ##STR1## wherein x is a whole number greater than about 5, the mole ratio of a:b is from 3:1 to 1:3, provided the HLB number is maintained at less than about 14, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently selected from the group consisting of hydrogen, alkyl (C.sub.1-16), aryl (C.sub.6-12), alkaryl (C.sub.7-12), and R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are such that the surfactant is oil-soluble and water-insoluble.

Process to produce water absorbent polymers

A method for reducing the residual acrylic acid present in water-insoluble polyacrylic acid water absorbent gel polymers which comprises treating these polymers with at least 0.5 mole of either amino acid cysteine or lysine per mole of acrylic acid present in said waters for at least 15 minutes at a temperature of at least 80.degree. C.

Method for reducing residual acrylic acid in acrylic acid polymer gels

Improved acrylic acid absorbency resins are made utilizing a chain transfer agent during the polymerization process.

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Batavia, IL, United States of America

Kristy M Bailey