Rohm and Haas Company

Thomas W Hutton

Sheldon N Lewis

John J Miller

Richard E Zdanowski

Joseph A Lavelle

R Larry Reitz

Pamela J Rogers

John D Guerin

Richard Foster Merritt

Ronald W Novak

Lawrence K Wempe

A low-formaldehyde polymer latex composition includes a formaldehyde-scavenging agent selected from

Low-formaldehyde, self-crosslinking polymer latex composition

The quaternary ammonium monomers of this invention have the formula ##STR1## wherein R is an ethylenically unsaturated organic group

Oil soluble quaternary ammonium monomers

An addition polymer is disclosed, the utility being to apply the same as a film to a hydraulic cement-containing article prior to curing, such as concrete, asbestos-cement shingles and the like, for example, to prevent moisture loss during the early hardening period. The polymers are formed of about 10 to 50 percent by weight of an ester of acrylic or methacrylic acid, the alcohol moiety of which has from 12 to about 20 carbon atoms, about 40 to 89.5 percent by weight of a vinyl aromatic monomer, and about 0.5 to 5 percent of a copolymerizable ethylenically unsaturated carboxylic acid, vinyl sulfonic acid, or salts thereof, preferably 15 to 30 percent of the ester, 69 to 84 percent of the vinyl aromatic material, and 1 to 3 percent of the unsaturated acid. In addition to use on concrete, the materials are useful for application to asbestos-cement shingles, prior to curing, and other similar uses. The preferred vinyl aromatic compound is styrene or vinyl toluene, and the preferred acid is itaconic acid, acrylic acid, or methacrylic acid.

Acrylic polymers solutions for use in forming a membrane for curing

A composition useful in coatings, binders, adhesives, and the like comprises a stable blend of a carboxylic acid copolymer emulsion and a halohydroxy propyl ammonium copolymer solution. The blend is curable, after activation by base, to a crosslinked insoluble alloy polymer.

Acid containing emulsion copolymer crosslinked by a halohydroxypropyl

Novel oxazoline-containing monomers represented by the formula ##STR1## wherein: n is an integer of from 1 through 20:

Hydrocurable compositions containing oxazoline groups

Curing membrane for concrete and the like

Novel polyacrylic hot melt adhesives prepared by blending a polymer having a Tg of -85.degree. to 0.degree. C. with a polymer having a Tg of 20.degree. to 150.degree. C. are disclosed.

Method of utilizing polyacrylic hot-melt adhesives

By conducting solution polymerization in the presence of minor amounts of water, higher molecular weight polymers are obtained.

Process for increasing molecular weight of a polymer

Disclosed herein are novel hydrocurable, thermoset polymers comprising the reaction product of

Hydrocurable compositions containing poly-oxazoline groups

Polyacrylic hot melt adhesives

Compositions comprising an oxazolidine and a polyanhydride cure in the presence of moisture to afford polymeric materials. The compositions can be used in forming caulks, films, fibers, paints, seamless flooring, coatings, impregnants and adhesives for both natural and synthetic materials.

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Doylestown, PA, United States of America

Thomas W Hutton