The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2002
Filed:
Jan. 28, 2000
Craig Jon Hawker, Los Gatos, CA (US);
James Lupton Hedrick, Pleasanton, CA (US);
William Dinan Hinsberg, III, Fremont, CA (US);
Marc Husemann, Hamburg, DE;
Michael Morrison, Addison, TX (US);
Other;
Abstract
A method is disclosed for preparing a patterned continuous polymeric brush on a substrate surface. The method generally involves functionalization of the substrate surface followed by surface-initiated polymerization at the initiation sites so provided, e.g., using a living free radical polymerization technique or the like, whereby a covalently bound continuous polymeric brush results, with acid-labile groups present throughout. An acid is then applied to the continuous polymer brush in a predetermined pattern, under conditions that result in removal of the acid-labile groups in at least one first region of the continuous polymer brush but not in at least one second region of the continuous polymer brush. In a preferred embodiment, the acid is a photogenerated acid resulting from imagewise irradiation of a photoacid generator applied as a film or coating to the surface-bound polymer brush.