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

Claim 11:
12. A method for preparing a copolymer according to claim 1, wherein the process comprises the steps of:
i) mixing at least one isocyanate (A) comprising at least one allophanate group and at least one active double bond, with at least one isocyanate reactive component (B) to obtain a mixture;
ii) heating the mixture obtained m step a. to a desired temperature to obtain an intermediate product (C);
iii) mixing the intermediate product (C) obtained in step b. with at least one active double bond reactive component (D) to obtain a mixture; and
iv) heating the mixture obtained in step c. to a desired temperature to obtain the copolymer;
wherein the at least one isocyanate reactive component (B) is selected from the group consisting of monofunctional polyether amine (B1), monofunctional polyether alcohol (B2), C6-C30 monofunctional alcohol (B3) and monofunctional polyester alcohol (B4).