D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/34 (2006.01) C08F 8/12 (2006.01) D21H 21/18 (2006.01) D21H 17/37 (2006.01)
Patent
CA 2247052
Proposed is the use, as agents for increasing the dry strength of paper, card and cardboard, of partially hydrolysed polymers of N-vinyl carboxylic acid amides obtained by the homopolymerization of N-vinyl carboxylic acid amides of the formula (I) in which R1 and R2 are H or C1-C6 alkyl and by splitting off 0.5 to 95 mole % of the groups of the formula (II) in which R1 is H or C1-C6 alkyl.
L'invention concerne l'utilisation, comme agents pour accroître la résistance à sec du papier, du carton-pâte et du carton, de polymères partiellement hydrolysés d'amides d'acide N-vinyl carboxylique obtenus par homopolymérisation d'amides d'acide N-vinyl carboxylique de la formule (I) dans laquelle R?1¿ et R?2¿ sont H ou alkyle C¿1?-C¿6?, et par clivage de 0,5 à 95 % en moles des groupes de la formule (II) dans laquelle R?1¿ est H ou alkyle C¿1?-C¿6?.
Niessner Manfred
Nilz Claudia
Rubenacker Martin
Schuhmacher Rudolf
Utecht Jens
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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