EP 0003481 B1 19821027 - HIGHLY FILLED SHEETS AND METHOD OF PREPARATION THEREOF
Title (en)
HIGHLY FILLED SHEETS AND METHOD OF PREPARATION THEREOF
Publication
Application
Priority
US 87445878 A 19780202
Abstract (en)
[origin: EP0003481A2] A sheet which is a composite of (A) from about 1 percent to about 30 percent of a water-dispersible fiber such as wood fiber, (B) from about 2 percent to about 30 percent of a film-forming, water-insoluble organic polymer such as a copolymer of styrene and butadiene, and (C) from about 60 percent to about 95 percent of a finely-divided, substantially water-insoluble, non-fibrous, inorganic filler such as magnesium hydroxide is prepared by steps comprising: (I) providing an aqueous dispersion of the fiber; (II) mixing therewith (A) the inorganic filler and (B) the organic polymer in the form of an ionically stabilized latex; (III) colloidally destabilizing the resulting mixture to form a fibrous agglomerate in aqueous suspension; (IV) distributing and draining the aqueous dispersion on a porous substrate such as a wire to form a wet web; and (V) drying the web.
IPC 1-7
IPC 8 full level
D21H 17/33 (2006.01); D21H 17/35 (2006.01); D21H 17/43 (2006.01); D06N 7/00 (2006.01); D21H 17/67 (2006.01); D21H 23/76 (2006.01)
CPC (source: EP)
D21H 17/35 (2013.01); D21H 17/43 (2013.01); D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 23/765 (2013.01)
Designated contracting state (EPC)
DE GB NL SE
DOCDB simple family (publication)
EP 0003481 A2 19790822; EP 0003481 A3 19790905; EP 0003481 B1 19821027; AU 4298178 A 19790809; AU 524468 B2 19820916; BE 872966 A 19790621; BR 7900060 A 19790911; CA 1112006 A 19811110; CH 640026 A5 19831215; DE 2862076 D1 19821202; DK 153575 B 19880725; DK 153575 C 19890102; DK 580378 A 19790803; ES 476778 A1 19800301; FI 64675 B 19830831; FI 64675 C 19831212; FI 783958 A 19790803; FR 2416291 A1 19790831; FR 2416291 B1 19821126; IT 1110869 B 19860106; IT 7852400 A0 19781221; JP S54106605 A 19790821; JP S57112500 A 19820713; JP S5749680 B2 19821023; NO 154350 B 19860526; NO 154350 C 19860903; NO 784302 L 19790803; NZ 189303 A 19820531
DOCDB simple family (application)
EP 78101807 A 19781221; AU 4298178 A 19781229; BE 192481 A 19781221; BR 7900060 A 19790105; CA 318286 A 19781220; CH 1303578 A 19781221; DE 2862076 T 19781221; DK 580378 A 19781222; ES 476778 A 19790111; FI 783958 A 19781221; FR 7836629 A 19781228; IT 5240078 A 19781221; JP 15842278 A 19781221; JP 9016881 A 19810611; NO 784302 A 19781220; NZ 18930379 A 19790104