Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H17/20—Macromolecular organic compounds
D21H17/33—Synthetic macromolecular compounds
D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D21H17/47—Condensation polymers of aldehydes or ketones
D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
D21H17/51—Triazines, e.g. melamine
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Chemical & Material Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Paper
(AREA)
CH273410D1946-12-311947-11-03Procédé de fabrication de papier.
CH273410A
(fr)