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:
Dec. 24, 2024
Filed:
Apr. 19, 2022
Applicant:
Lanxess Corporation, Pittsburgh, PA (US);
Inventors:
Huiyuan Chen, Cheshire, CT (US);
Cyril Migdal, Pleasant Valley, NY (US);
Kevin DiNicola, Wolcott, CT (US);
Robert G. Rowland, Woodbridge, CT (US);
Assignee:
LANXESS Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C10M 133/12 (2006.01); C10N 30/10 (2006.01);
U.S. Cl.
CPC ...
C10M 133/12 (2013.01); C10M 2215/065 (2013.01); C10N 2030/10 (2013.01);
Abstract
Liquid alkylated N-phenyl-α-naphthylamine (PANA) compositions are disclosed containing a high concentration of mono-alkylated PANA and low levels of di-alkylated and less than 1% by weight of unsubstituted PANA. The novel compositions may be prepared by controlled alkylation of PANA with propylene oligomers followed by subsequent alkylation with at least one second olefin.