IPIQ

TEXTILES; PAPER

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

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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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D21H17/03

Non-macromolecular organic compounds

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D21H17/05

containing elements other than carbon and hydrogen only

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D21H17/18

forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with itself, or other added substances, e.g. by grafting on the fibres

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D21H17/19

by reactions only involving carbon-to-carbon unsaturated bonds

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Patent classifications