This invention relates to aqueous emulsions comprising a water-dispersible copolymer which is non-dispersible in aqueous solutions containing 0.5% or more of an inorganic salt, comprising acidic ethylenically unsaturated monomers and ethylenically unsaturated monomers. The acidic ethylenically unsaturated monomers and the ethylenically unsaturated monomers are defined herein. The present invention also pertains to emulsion polymerization methods for making the aqueous emulsions with or without a surfactant.

Salt sensitive aqueous emulsions

The present invention is directed to a non-woven material having an emulsion binder, which is dispersible in water, yet non-dispersible in aqueous solutions containing 0.5 weight percent or more of an inorganic salt. The water-dispersible polymer comprises from 1 to 100 percent by weight of a hydrophilic monomer and from 0 to 99 percent by weight of at least one non-hydrophilic monomer, wherein a film formed from said polymer has a Tg of from −40 to 105° C. The dispersible non-woven material is useful in forming disposable articles which can be disposed of by flushing down a toilet.

Water dispersible, salt sensitive nonwoven materials

A stable latex composition possessing a viscosity of less than about 50 cp. comprised of an ethylacrylate/methylacrylic acid/ acrylic acid polymer and co-surfactant system comprising a nonylphenol polyethylene oxide ether sulfate and a propoxylated, ethoxylated propylene glycol nonionic surfactant block polymer useful for increasing the viscosity of water that is injected into subterranean petroleum bearing formations for the enhanced recovery of the petroleum.

Enhanced oil recovery composition

A salt sensitive polymeric binder for use in fibrous webs, where the binder contains a copolymer of carboxylic acid monomer units, acrylate monomer units, and N-alkyl acrylamide units The copolymer is neutralized at least to the point where it is water soluble The binders are particularly suitable for strengthening non-woven fibrous webs in disposable articles such as wet-wipes, personal care products, diapers, and the like

Salt-sensitive binder compositions with n-alkyl acrylamide and articles incorporating same

A solution with a salt-sensitive polymer binder for use in fibrous webs, where the binder contains a copolymer of carboxylic acid monomer units and ethylenically unsaturated monomer units. The binder solution is prepared by emulsion-polymerizing a copolymer and then neutralizing the copolymer with base to make it water soluble. The binders provide a higher wet strength in concentrated salt solutions than in deionized water, and are particularly suitable for strengthening nonwoven fibrous webs in disposable articles such; as wet-wipes, personal care products, diapers, and the like.

Salt-sensitive binders for nonwoven webs and method of making same

DISCLOSES MAKING MECHANICALLY STABLE SYNTHETIC PLYMERIC LATICES COMPRISING AT LEAST 55 PERCENT ALPHA-UNSATURATED CARBOXYLIC MONOMERS SUCH AS METHACRYLIC ACID POLYMERIZED IN AN EMULSION SYSTEM CONTAINING AN EMULSIFIER SELECTED FROM THE GROUP CONSISTING OF DISODIUM OR DIAMMONIUM NONYLPHENOXY POLYETHOXY SULFOSUCCINATE AND A SODIUM OR AMMONIUM LAURYL POLYETHOXY SULFATE. THESE EMULSIFIERS PERMIT THE FORMATION OF A POLYMERIC LATEX MECHANICALLY STABLE AGAINST COAGULATION WHILE AT THE SAME TIME CONTAINING MROE THAN 55 PERCENT CARBOXYLIC MONOMERS EVEN WHEN THE MONOMERIC ACID IS COPOLYMERIZED WITH OTHER COPOLYMERIZABLE MONOMERS SUCH AS ACRYLATES, STYRENE AND BUTADIENE.

Daniel F Klemmensen

Papers

Stable polymeric latices of high carboxyl content