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US 2026/0139437 A1Published application
An intermediate composition
AssigneeKemira Oyj
InventorsAsko KARPPI, Judith TARAZONA, Xavier DE SEQUERA, Perttu HEISKA, Eric PADOVANI
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AssigneeKemira Oyj
InventorsAsko KARPPI, Judith TARAZONA, Xavier DE SEQUERA, Perttu HEISKA, Eric PADOVANI
Estimating the term…
The present invention relates to an intermediate composition in form of an aqueous solution having a pH value ≤6 for manufacture of polyamidoamine epihalohydrin resin. The intermediate composition comprises a polyamidoamine derivative having an average molecular weight of <150 000 g/mol with covalently bound pendant halohydrin groups, wherein the polyamidoamine derivative comprises 5-95 mol-%, preferably 7-90 mol-% of pendant halohydrin groups. The intermediate composition further comprises a total amount of 1,3-dihalo-2-propanol and 3-halopropyleneglycol less than 3500 ppm, calculated from the total dry weight of the intermediate composition.
An intermediate composition in form of an aqueous solution having a pH value ≤6 for manufacture of polyamidoamine epihalohydrin resin, which intermediate composition comprises a polyamidoamine derivative having an average molecular weight of <150 000 g/mol with covalently bound pendant halohydrin groups, wherein the polyamidoamine derivative comprises 5-95 mol-%, preferably 7-90 mol-% of pendant halohydrin groups, and wherein the intermediate composition comprises a total amount of 1,3-dihalo-2-propanol and 3-halopropyleneglycol less than 3500 ppm, calculated from the total dry weight of the intermediate composition.
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