(Hydroxyalkyl)urea crosslinking agents
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsAndrew J. Kielbania, Jr., Pravin Kukkala, Sharon Lee, John C. Leighton
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Abstract
(Hydroxyalkyl)urea crosslinking agents and compositions which utilize such crosslinking agents are disclosed. The crosslinking agents contain a single urea group, at least two hydroxyl groups, and have at least two carbon atoms disposed between the urea group and each of the hydroxyl groups. The compositions contain a poly-functional molecule which contains at least two functional groups selected from the group consisting of carboxyl, anhydride and amine.
Claims8
A composition, consisting essentially of:
- a poly-functional molecule comprising at least two functional groups selected from the group consisting of carboxyl, anhydride and amine,
- a crosslinking agent present in amounts effective to provide crosslinked compositions, said crosslinking agent comprising a single urea group and at least two hydroxyl groups, wherein at least two carbon atoms are disposed between the urea group and each of the hydroxyl groups;
- and
- optionally, less than stoichiometric amounts of a catalyst.
An article of manufacture comprising a composition which consists essentially of
- a poly-functional molecule comprising at least two functional groups selected from the group consisting of carboxyl, anhydride and amine,
- a crosslinking agent present in amounts effective to provide crosslinked compositions, said crosslinking agent comprising a single urea group and at least two hydroxyl groups, wherein at least two carbon atoms are disposed between the urea group and each of the hydroxyl groups and wherein said crosslinking agent is essentially free of formaldehyde;
- and
- optionally, less than stoichiometric amounts of a catalyst.
Dependencies are inferred from the claim text.