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US 12,421,345 B2Granted
Polyimines and uses thereof
AssigneeBostik SA
InventorsStéphane Fouquay, Federico Sanz
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Abstract
The present invention relates to a moisture-crosslinkable sealant composition comprising: at least one polyurethane P comprising at least two NCO end functions; at least one polyimine A obtained via a process comprising a step of reaction between at least: a) a (poly)urethane-aldehyde comprising at least 2 aldehyde functions; b) a primary diamine; c) optionally in the presence of a primary monoamine or a monoaldehyde if the —CHO/NH2 molar ratio is other than 1.
Claims17
A moisture-crosslinkable sealant composition comprising:
- at least one polyurethane P comprising at least two NCO end functions;
- and
- at least one polyimine A obtained via a process comprising a step of reaction between at least:
- a) a (poly) urethane-aldehyde comprising at least 2 aldehyde functions;
- b) a primary diamine;
- c) optionally in the presence of a primary monoamine or a monoaldehyde if a —CHO/NH2 molar ratio is other than 1.
3 more elements
A polyimine A obtained via a process comprising a step of reaction between at least:
- a) a (poly)urethane-aldehyde comprising at least 2 aldehyde functions;
- b) a primary diamine;
- c) optionally in the presence of a primary monoamine or a monoaldehyde if a —CHO/NH2 molar ratio is other than 1;
- wherein said (poly)urethane-aldehyde a) is a (poly)urethane-dialdehyde comprising an allophanate radical.
1 more element
Dependencies are inferred from the claim text.