Tailorable surface topology for antifouling coatings

US10752787B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Amos Cahan · Dobbs Ferry, US
• Xin Ding · Singapore, SG
• Mareva B. Fevre · San Jose, US
• James L. Hedrick · Pleasanton, US
• Zhen Chang Liang · Singapore, SG
• Nathaniel H. Park · San Jose, US
• Theodore G. van Kessel · Millbrook, US
• Rudy J. Wojtecki · San Jose, US
• Yi Yan Yang · Singapore, SG

Key dates

• Filing date: Nov 6, 2019
• Grant date: Aug 25, 2020
• Expiry date: Nov 6, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29K2995/0041
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Embodiments are directed to a method of making an antifouling and bactericidal coating with tailorable surface topology. The method includes depositing a layer of branched polyethyleneimine (BPEI) and diamino-functionalized poly(propylene oxide) (PPO) in a mixture of water and organic solvent on a substrate to form a layer of BPEI/PPO. The method includes depositing a layer of glyoxal in a water-containing solution on the layer of BPEI/PPO. The method further includes curing the layer of BPEI/PPO and layer of glyoxal to form a homogenous, glyoxal crosslinked BPEI/PPO coating, where the curing induces local precipitation and alteration of the glyoxal crosslinked BPEI/PPO coating to provide a textured surface.