Patent ID: 11897995
Assignee: BASF SE
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. The copolymer according to claim 3, wherein the at least one polyisocyanate (A1) is selected from the group consisting of 4,4′-diphenylmethanediisocyanate, toluene diisocyanate, naphthylene-1,5-diisocyanate, 1,3-or 1,4-phenylene-diisocyanate, triphenylmethane-4,4′,4″-triisocyanate, poly phenyl-polymethylene polyisocyanate, hexamethylene diisocyanate, 1,12-dodecanediisocyanate, cyclobutane-1,3-diisocyanate, cyclohexane-1,3- or 1,4-diisocyanate, 1-isocyanato-3,3,5-trimethyl-5-isocyanate-methylcyclohexane, 2,4- or 2,6-hexahydrotolyene-diisocyanate, hexahydro-1,3- or -1,4-phenyidiisocyanate and perhydro-2,4′- or -4,4′-dicyclohexylmethanediisocyanate.