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US 2024/0174601 A1Published application
Composition comprising heterocyclic compound and 4,4'-methylene diphenyl diisocyanate
AssigneeBASF SE
InventorsYang YANG, Xiao Yu SUN, Dong LIANG, Stefan BOKERN, Johannes BARTH, Peter DEGLMANN
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Abstract
This disclosure relates to a composition comprising (a) 4,4′-methylene diphenyl diisocyanate (4,4′-MDI), and (b) at least one heterocyclic compound comprising as ring moiety at least one structure of formula (I) as defined in the description. The heterocyclic compound can suppress the formation of 4,4′-MDI dimer and thus prevent the formation of insoluble solids and extend the shelf life of 4,4′-MDI.
Claims17
-16. (canceled)
A composition comprising
- (a) 4,4′-methylene diphenyl diisocyanate (4,4′-MDI), and
- (b) at least one heterocyclic compound comprising as ring moiety at least one structure of formula (I)
- wherein X and X′ are each independently C or S;
- n is 1 when X is C, or n is for 2 when X is S;
- m is 1 when X′ is C, or m is 1 or 2 when X′ is S;
- Y is N or P;
- and
- R1 is selected from H, OH or halogen.
5 more elements
Dependencies are inferred from the claim text.