Crosslinked polymeric ammonium salts
AssigneeE. I. Du Pont de Nemours and Company
InventorGarret D. Figuly
Life of this patent
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Abstract
Disclosed are novel crosslinked polymeric ammonium salts wherein in said salt: about 25% or more of the groups which link ammonium nitrogen atoms are group Y wherein Y is an n-alkylene groups or alkyl substituted n-alkylene group, wherein said n-alkylene group has 7 to about 20 carbon atoms; zero to about 75% of groups which links 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.
Claims17
A crosslinked polymeric ammonium salt, wherein in said salt:
- about 25% or more of the groups 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 the groups 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, silyl groups or heterocyclic rings;
- and
- wherein about 25% or more of the ammonium nitrogen atoms are secondary ammonium nitrogen atoms.
Dependencies are inferred from the claim text.