Rohm Gmbh

Rohm Gmbh Chemische Fabrik

Heiner Kniese

Herbert Fink

Werner Siol

Norbert Suetterlin

Klaus Mueller

Willi Tilch

Klaus Hubner

A method for the manufacture of bound textile sheets, comprising treating a textile sheet substrate with a water dispersion of a mixed polymerizate binder of: (a) 80-99% by wt. of a C.sub.1-8 alkyl ester of acrylic acid, a C.sub.1-8 alkyl ester of methacrylic acid, or combination thereof, or a mixture of at least one of said acrylate or methacrylate esters with styrene, (b) 1-10% by wt. of an acrylamide glycolic acid monomer of the formula: ##STR1## wherein R is hydrogen or methyl, R' is alkyl and R' is hydrogen or alkyl, and (c) 0-20% by wt. of another comonomer.

Bound textile sheet and procedure for its manufacture

What are disclosed are a method for the reinforcement of a fibrous article with an aqueous dispersion of a resin, free of formaldehyde and acrylonitrile, comprising at least 40 weight percent of alkyl acrylates and/or methacrylates having at least 4 carbon atoms in the alkyl group; up to 57 weight percent of alkyl acrylates or methacrylates having not more than 3 carbon atoms in the alkyl group, or of styrene; less than 1 weight percent of acrylic acid or of methacrylic acid; and from 3 to 15 weight percent of a hydroxyalkyl ester of an unsaturated carboxylic acid, as well as reinforced fibrous articles made by this method and distinguished by high wet strength and by low loss of the resin binder on washing with boiling water.

Method for strengthening fibrous articles

What are disclosed are aqueous dispersions of an acrylic resin which is suitable for the reinforcement of fibrous articles and is free of formaldehyde and acrylonitrile, said resin comprising (a) from 70 to 96.95 weight percent of alkyl esters of acrylic acid and/or methacrylic acid, or mixtures of such esters with styrene; (b) from 2 to 30 weight percent of an hydroxyalkyl ester of an unsaturated carboxylic acid; (c) from 1 to 10 weight percent of acrylamide or of methacrylamide; (d) from 0.05 to 3 weight percent of a crosslinking comonomer having at least two polymerizable double bonds; (e) up to 5 weight percent of an unsaturated carboxylic acid; and (f) up to 20 weight percent of one or more further monomers, as well as fibrous articles reinforced with such a resin dispersion and showing reduced loss of resin binder on dry cleaning and reduced absorption of plasticizers, and methods of making such articles.

Acrylic resin dispersions

Growing community of inventors

Seeheim-Jugenheim, Germany

Heiner Kniese