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:
Mar. 30, 2021
Filed:
Sep. 17, 2018
Brewer Science, Inc., Rolla, MO (US);
Kui Xu, Rolla, MO (US);
Richard Elsworth Daugherty, Jr., Bland, MO (US);
Daniel Patrick Sweat, Rolla, MO (US);
Mary Ann Hockey, Rolla, MO (US);
Eric Calderas, Rolla, MO (US);
Megan Bennett, Rolla, MO (US);
Brewer Science, Inc., Rolla, MO (US);
Abstract
Novel block copolymers ('BCPs') having non-random distributions of comonomers within at least one of the blocks and methods of using those BCPs in directed self-assembly ('DSA') processes are provided. The non-random (e.g., gradient-creating) distributions can be customized in order to concentrate the desired comonomer properties in predetermined areas of the BCP. These BCPs can achieve perpendicular orientation with simple annealing and offer superior long-range ordering and lower defectivity when compared to prior art BCPs. These BCPs can be incorporated into compositions that simultaneously offer the benefits of high-χ and rapid thermal-annealing kinetics while maintaining similar or improved guide process windows when compared to prior art BCPs.