Hydrophobically modified poly(aminoamides)

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 73/02 (2006.01) C08G 69/00 (2006.01) D21H 21/00 (2006.01)

Patent

CA 2742628

Disclosed herein are hydrophobically-modifed poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds, hi particular, poly(am?ioamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2- hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.

La présente invention concerne des poly(aminoamides) à modification hydrophobe utiles en tant quantiadhésifs fixateurs pour le contrôle des matières collantes et du caractère poisseux dans des procédés de fabrication de papier. Ces polymères sont préparés par modification de poly(aminoamides) hydrosolubles contenant des amines avec des composés hydrophobes contenant des groupes fonctionnels réactifs, en particulier, des poly(aminoamides) peuvent être modifiés, dans des conditions de réaction appropriées, avec un éther de glycidyle dalkyle à chaîne longue, un AKD (dimère alkyle-cétène), un ASA (anhydride dalkyl-succinyle), ou un Quab (chlorure de 3-chloro-2-hydroxypropyl-N,N,N-diméthylalkylammonium). Ces nouveaux polymères sont efficaces dans linhibition du dépôt de contaminants organiques dans des systèmes de fabrication de pâte à papier et de papier.

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