Process for producing pulp-forming particles and synthetic...

Details Process for producing pulp-forming particles and synthetic... Process for producing pulp-forming particles and synthetic...

C - Chemistry, Metallurgy

08

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402/2, 9/39

C08G 69/32 (2006.01) C08G 73/00 (2006.01) D01D 5/40 (2006.01) D01F 6/60 (2006.01) D01F 6/74 (2006.01) D21H 13/26 (2006.01)

Patent

CA 1067244

Abstract of the Disclosure A process for preparing pulp-forming particles comprises adding a solution in an aqueous organic solvent of a thermally stable aromatic nitro- gen-containing polymer selected from aromatic polyamides and nitrogen- containing polyheterocyclic compounds to a precipitant to form a dispersion containing pulp-forming particles of the polymer. The precipitant consists of water and an amide-type solvent for the polymer present in selected ranges depending on the polymer used. The pulp-forming particles are heated to 30 to 90°C in the presence of at least 2 parts by weight ofa mixture of aqueous organic solvent and precipitant, per part by weight of the pulp-forming particles. The resulting pulp-forming particles can be formed into synthetic paper by combination with thermally stable staple fibers. The synthetic paper has superior thermal stability, impregnating ability, texture uniformity and electrical insulation.

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