Nalco Chemical Company

Roger H Jansma

Kenneth G Phillips

Gary S Furman, Jr

Edward G Ballweber

Karen R Sandberg

A James Begala

Charles C Payne

James H Smith

William E Albrecht

Raymond J Novotny

Neil A Marron

There is provided a strength resin polymer for papermaking that has pendant alpha-hydroxy acetal substituents to (N-alkyl)(C.sub.1-2 alkyl)acrylamide mer units. There also is provided a process for preparation of such resin polymer by adduction of a pre-existing polymer, or the monomer precursors thereto, with an acetal-aldehyde reactant under alkaline conditions. There is provided such strength resin polymer in the form of a fluid liquid system, for instance a fluid solution or a fluid oil-continuous water-in-oil emulsion, particularly when such a system has a high concentration of resin polymer. There is provided activated polymer versions of certain of such resin polymers and paper compositions containing such activated polymer. There is also provided papermaking processes including the step of activating such resin polymer.

Strength resins for paper

A water-soluble dispersant which aids in the dispersion of polyester fibers during the preparation of a wet-laid nonwoven fiber mat, the water-soluble dispersant comprising:

Water-soluble dispersant which aids in the dispersion of polyester

Superiority in retained slide angle of antiskid paper is achieved by spraying the paper with a composition of matter consisting essentially of an acrylamide, glycerine, balance antiskid aqueous silica sol.

Antiskid paper with enhanced friction retention

Water-soluble monomers and water-soluble polymers derived therefrom are disclosed. These materials can be used with other vinyl monomers to form water-soluble polymers which are reactive with cellulosic substrates to obtain drastically improved strength, particularly when applied in paper manufacture. The polymers contain at least two mole percent of a monomer represented by the chemical structure: ##STR1## wherein R is H, CH.sub.3, or C.sub.2 H.sub.5 ; and

Polyaldehyde/polyacetal compositions

Water-soluble monomers and water-soluble polymers derived therefrom are disclosed. These materials can be used with other vinyl monomers to form water-soluble polymers which are reactive with cellulosic substrates to obtain drastically improved strength, particularly when applied in paper manufacture. The polymers contain at least two mole percent of a monomer represented by the chemical structure: ##STR1## wherein R is --H, --CH.sub.3, or --C.sub.2 H.sub.5 ; and

A blend which contains homopolymers useful for imparting wet and dry strength to pulp and paper fibers which comprises a major amount of non-ionic polyacrylamide, together with glyoxal to impart crosslinking and a cationic regulator selected from the group consisting of a low molecular weight dimethyl amine epichlorohydrin copolymer, a low molecular weight ethylene dichloride ammonia condensation polymer, and a polyvinyl benzyl trimethyl ammonium chloride polymer. A buffer such as tetrasodium pyrophosphate may be used. A dosage of 0.2-5% by weight (preferred 0.5-2% by weight) based on the dry weight of fiber is utilized.

Cationic polymeric composition for imparting wet and dry strength to

A blend which contains homopolymers useful for imparting wet and dry strength to pulp and paper fibers which comprises a major amount of non-ionic polyacrylamide, together with glyoxal to impart crosslinking and polymeric diallyldimethyl ammonium chloride (DADMAC) as a cationic modifier. A buffer such as tetrasodium pyrophosphate may be used. A dosage of 0.2-5% by weight (preferred 0.5-2% by weight) based on the dry weight of fiber is utilized.

Paper fiber additive containing polyacrylamide blended with glyoxal and

Electroconductive paper useful typically in making copies by an electrostatic process may be made by incorporating therein NaCl and a polymer consisting of units derived from diallyl dimethyl ammonium chloride.

Sodium chloride and polydiallyl dimethyl ammonium chloride as an

A method of promoting alkaline viscosity stability in polymers formed from a secondary amine, an epihalohydrin and an amount of a crosslinking agent such as a primary amine or ammonia which would cause gelation, comprising reacting said polymer with a tertiary amine; a preferred polymer is formed of epichlorohydrin, dimethylamine and ammonia stabilized with trimethylamine.

Growing community of inventors

Park Forest, IL, United States of America

Roger H Jansma