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US 11,124,606 B2Granted
Formaldehyde free crosslinking compositions
AssigneeAllnex Netherlands B.V.
InventorsUrvee Y. Treasurer, Zachary Wilde, Lawrence Flood, Sarah Quinn, Colin Brogan, Ram Gupta
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Abstract
The present invention relates to reaction products H of at least one cyclic urea U, at least one multifunctional aldehyde A and at least one polyol P, process for preparing thereof and compositions comprising thereof.
Claims12
A process for preparing a reaction product H of at least one cyclic urea U, at least one multifunctional aldehyde A, and at least one polyol P, the process comprising the steps of:
- a) mixing the at least one cyclic urea U with the at least one multifunctional aldehyde A in order to effect an addition reaction in the presence of at least one base B, which does not react with any of the multifunctional aldehyde A, the cyclic urea U, the reaction product H, and the at least one polyol P, and then
- b) admixing the at least one polyol P together with at least one acid catalyst C to the at least one cyclic urea U, the at least one multifunctional aldehyde A and the at least one base B,
- wherein the reaction product H is obtained in the presence of the at least one acid catalyst C, and
- wherein a ratio of an amount of the at least one polyol P reacted or bound into the reaction product H to an amount of the at least one cyclic urea U in the reaction product H is at least 0.19 mol/mol.
1 more element
Dependencies are inferred from the claim text.