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:
Aug. 09, 2016
Filed:
Jul. 16, 2013
Applicant:
Rohm and Haas Electronic Materials Llc, Marlborough, MA (US);
Inventors:
Matthias S. Ober, Midland, MI (US);
Duane R. Romer, Midland, MI (US);
John B. Etienne, Mount Pleasant, MI (US);
Pulikkottil J. Thomas, Midland, MI (US);
Assignee:
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 65/38 (2006.01); C08G 65/40 (2006.01); C08G 65/48 (2006.01); C07C 43/23 (2006.01); C07C 43/21 (2006.01);
U.S. Cl.
CPC ...
C08G 65/40 (2013.01); C08G 65/38 (2013.01); C08G 65/485 (2013.01); C08G 2650/12 (2013.01);
Abstract
A polymer includes repeat units having the structure wherein R, R, Ar, Ar, and Arare defined herein. The polymer can be prepared by Suzuki polycondensation. The acetal and/or ketal functionality in the polymer backbone make the backbone-cleavable in acid. The polymer is useful in applications including lithographic photoresists.