D
TEXTILES; PAPER
D
TEXTILES; PAPER
D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
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
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
D21H17/00
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
D21H17/20
Macromolecular organic compounds
D21H17/20
Macromolecular organic compounds
D21H17/33
Synthetic macromolecular compounds
D21H17/33
Synthetic macromolecular compounds
D21H17/46
obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D21H17/46
obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D21H17/54
obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
D21H17/54
obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen