EP 0000921 B1 19811202 - A METHOD FOR PREPARING A HIGH STRENGTH COMPOSITE AND FIBROUS WEB COMPRISING A DRIED COMPOSITE
Title (en)
A METHOD FOR PREPARING A HIGH STRENGTH COMPOSITE AND FIBROUS WEB COMPRISING A DRIED COMPOSITE
Publication
Application
Priority
- US 82532077 A 19770817
- US 82532377 A 19770817
Abstract (en)
[origin: EP0000921A1] High strength composites prepared by (A) mixing (1) an aqueous slurry of negatively charged, water-insoluble natural or synthetic fiber such as cellulose fiber, (2) a latex having a high density of pH independent cationic charges, such as sulfonium, bound at or near the particle surface, (3) a water-soluble, high molecular weight anionic polymer co-additive, such as a hydrolyzed polyacrylamide and optionally (4) conventional wet and additives; (B) draining water from the resulting aqueous suspension and (C) drying by heating.
IPC 1-7
IPC 8 full level
C08F 8/00 (2006.01); D21H 17/34 (2006.01); D21H 17/37 (2006.01); D21H 17/43 (2006.01); D21H 21/54 (2006.01)
CPC (source: EP)
C08F 8/00 (2013.01); D21H 17/34 (2013.01); D21H 17/375 (2013.01); D21H 17/43 (2013.01); D21H 21/54 (2013.01)
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0000921 A1 19790307; EP 0000921 B1 19811202; CA 1118165 A 19820216; DE 2861402 D1 19820128; JP S5455608 A 19790502; JP S6240480 B2 19870828
DOCDB simple family (application)
EP 78100676 A 19780816; CA 309460 A 19780816; DE 2861402 T 19780816; JP 9956678 A 19780817