Patent ID: 11939444
Assignee: THE SECANT GROUP, LLC
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 6:
7. A single-use bioreactor bag comprising a polymer film comprising:
a base layer of a first composition of poly(ethylene-vinyl acetate);
a surface layer at a surface of the base layer, the surface layer comprising surface hydroxy groups converted from acetate groups of the poly(ethylene-vinyl acetate); and
a coating layer of a second composition of a copolymer of glycerol, sebacic acid, and citric acid;
wherein the second composition is attached to the surface layer by ester bonds between carboxyl groups of the copolymer of glycerol, sebacic acid, and citric acid and the hydroxy groups of the surface layer.