Patent classifications
D
TEXTILES; PAPER
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D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
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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
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17/00
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
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D21H17/20
Macromolecular organic compounds
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D21H17/33
Synthetic macromolecular compounds
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D21H17/34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
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D21H17/37
Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
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