Consolidated impregnated web and process

US4752523A · kind A · utility

Assignee

• Polysar Financial Services S.A. · CH

Inventors

• Peter Claassen · Ludwigshafen, DE
• Lex De Beer · Zevenaar, NL

Key dates

• Filing date: Jan 12, 1987
• Grant date: Jun 21, 1988
• Expiry date: Jan 12, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/2033
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A consolidated web may be produced by impregnating it with a compound of latex of a polymer comprising from about 10 to about 45 weight percent of a C.sub.3-6 alkenyl nitrile; from about 36 to 85 weight percent of a C.sub.4-6 conjugated diolefin; from about 5 to 20 weight percent of a monomer mixture comprising from 100 to about 60 percent of a C.sub.8-12 vinyl aromatic monomer which may be unsubstituted or substituted by a C.sub.1-4 alkenyl radical or a chlorine or bromine atom; from 0 to 40 weight percent of a C.sub.1-2 alkyl ester of acrylic or methacrylic acid; from about 0.5 to 10 weight percent of at least one, C.sub.3-6 ethylenically unsaturated carboxylic acid; and from about 0.1 to 5 weight percent of an N-C.sub.1-4 alkylol derivative of an amide of a C.sub.3-6 ethylenically unsaturated carboxylic acid; from 40-100 parts by weight of a filler, an effective amount of a gelling agent and optionally a cure paste.