Crosslinked polymeric ammonium salts

Details Crosslinked polymeric ammonium salts Crosslinked polymeric ammonium salts

C - Chemistry, Metallurgy

08

G

C08G 73/02 (2006.01) A61K 31/785 (2006.01) C08J 3/075 (2006.01)

Patent

CA 2179712

Disclosed are novel crosslinked polymeric ammonium salts wherein in said polymeric salt: about 25 % or more of the segments which link ammonium nitrogen atoms are group Y wherein Y is an n-alkylene group or alkyl substituted n-alkylene group, wherein said n-alkylene group has 7 to about 20 carbon atoms; zero to about 75 % of segments which link ammonium nitrogen atoms are group Z wherein Z is a hydrocarbylene radical containing 2 or more carbon atoms, said hydrocarbylene radical optionally containing one or more hydroxyl, ether, amino, thioether, keto, or silyl groups or heterocyclic rings; and about 25 % or more of the ammonium atoms are secondary ammonium atoms.

Cette invention se rapporte à de nouveaux sels d'ammonium polymères réticulés, dans lesquels: au moins 25 % environ des segments qui lient les atomes d'azote de l'ammonium constituent le groupe Y, où Y représente un groupe n-alkylène ou un groupe n-alkylène à substitution alkyle, possédant 7 à environ 20 atomes de carbone; 0 à environ 75 % des segments qui lient les atomes d'azote de l'ammonium constituent le groupe Z, où Z représente un radical hydrocarbylène contenant deux atomes de carbone ou plus, ainsi qu'éventuellement un ou plusieurs hétérocycles ou groupes hydroxyle, éther, amino, thioéther, céto ou silyle; et au moins 25 % environ des atomes d'ammonium sont des atomes d'ammonium secondaire.

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