Patent ID: 11872728
Assignee: BASF SE
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 3:
4. The process according to claim 3, wherein the catalyst is selected from the group consisting of triethylamine, tributylamine, dimethylbenzylamine, N-methylmorpholine, N-ethylmorpholine, N-cyclohexylmorpholine, N,N,N′,N′tetramethylethylenediamine, N,N,N′,N′-tetramethylbutanediamine, N,N,N′,N′-tetramethylhexanediamine, pentamethyldiethylenetriamine, bis(dimethylaminoethyl) ether, bis(dimethylaminopropyl)urea, dimethylpiperazine, 1,2-dimethylimidazole, 1-azabicyclo[3.3.0]octane, 1,4-diazabicyclo-[2.2.2]octane, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and mixtures of these tertiary amines.