Method for strengthening fibrous articles

US4476182A · kind A · utility

Assignee

• Rohm Co., Ltd. · JP

Inventors

• Herbert Fink · Emmelshausen, DE
• Heiner Kniese · Seeheim-Jugenheim, DE
• Norbert Suetterlin
• Klaus Mueller · Unsleben, DE
• Willi Tilch · Reinheim, DE
• Werner Siol · Pfungstadt, DE

Key dates

• Filing date: Jan 5, 1983
• Grant date: Oct 9, 1984
• Expiry date: Jan 5, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2861
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

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.