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US 2024/0301122 A1Published application
A modified polyisocyanate
AssigneeCovestro Deutschland AG
InventorsHao LIU, Yaguang MA, Na XU, Tian XIA, Hans-Josef LAAS, Raul PIRES
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AssigneeCovestro Deutschland AG
InventorsHao LIU, Yaguang MA, Na XU, Tian XIA, Hans-Josef LAAS, Raul PIRES
Estimating the term…
The invention relates to a modified polyisocyanate and use thereof, especially as a crosslinking component in a water-soluble or water-dispersible coating composition. The modified polyisocyanate comprises iminooxadiazinedione structure and isocyanurate structure, wherein the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure is not less than 1: 5; and relative to the total weight of the modified polyisocyanate, the total amount of molecules with a number average molecular weight greater than 2700 g/mol in the modified polyisocyanate is 4.1% by weight to 22% by weight; and the modified polyisocyanate is obtainable by the reaction of: an aminosulfonic acid, a polyisocyanate; a tertiary amine; and optionally a polyether alcohol containing ethylene oxide groups.
A modified polyisocyanate comprising an iminooxadiazinedione structure and an isocyanurate structure, wherein the weight ratio of the iminooxadiazinedione structure to the isocyanurate structure is not less than 1:5;
(canceled)
Dependencies are inferred from the claim text.