Patent ID: 11859035
Assignee: NISSAN CHEMICAL CORPORATION
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 2:
3. The method for producing a base film for cell culture according to claim 2, which further comprises, before the coating and drying steps, a step of coating a composition for forming a coating film containing a copolymer having a recurring unit containing an organic group represented by the following formula (a) and a recurring unit containing an organic group represented by the following formula (b):, wherein Ua11, Ua12, Ub11, Ub12 and Ub13 each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 5 carbon atoms, and An− represents an anion selected from the group consisting of a halide ion, an inorganic acid ion, a hydroxide ion and an isothiocyanate ion,, and a solvent onto a surface of a container or a substrate and drying the same.