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. 30, 2019
Filed:
Aug. 17, 2017
Poly(2,6-dimethyl-1,4-phenylene-oxide) derivatives with sulfonyl pendant groups and methods therefor
The United States of America, As Represented BY the Secretary of the Air Force, Washington, DC (US);
Loon-Seng Tan, Centerville, OH (US);
David Huabin Wang, Beavercreek, OH (US);
Lei Zhu, Solon, OH (US);
The United States of Ameirca as represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A sulfonyl-substituted polyphenylene-ether polymer having improved dielectric properties and methods for making the same. The sulfonyl-substituted PPE include sulfone-containing polyphenylene oxides ('PPO') polymers having repeating units of the formulas: wherein each of Rand Ris H or an alkyl group containing from 1 to 4 carbon atoms, Ris an alkylene group containing from 1 or 2 carbon atoms, Ris selected from a group consisting of an alkyl group containing from 1 to 4 carbon atoms, an aryl group, and CF, and X is a halogen atom. The subscript n is 0 or 1; the subscript m is 1 or 2, provided that when m is 2, Ris H. A degree of polymerization ranges from about 5 to about 1,000, and a ratio of units having formula (1) to units having formula (2) of the sulfone-containing PPO polymer ranges from about 10:90 to about 90:10.