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:
Apr. 26, 2016
Filed:
Aug. 12, 2011
Gauri Sankar Lal, Whitehall, PA (US);
Kristen Elaine Minnich, Germansville, PA (US);
Pritesh G. Patel, Breinigsville, PA (US);
Gamini Ananda Vedage, Bethlehem, PA (US);
Garret C. Lau, Emmaus, PA (US);
Gauri Sankar Lal, Whitehall, PA (US);
Kristen Elaine Minnich, Germansville, PA (US);
Pritesh G. Patel, Breinigsville, PA (US);
Gamini Ananda Vedage, Bethlehem, PA (US);
Garret C. Lau, Emmaus, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A liquid methylenedianiline product is disclosed. The product is produced by reacting aniline and ethylaniline with formaldehyde with an amine to formaldehyde ratio greater than about 2:1. The resulting reaction product is a liquid mixture of methylenedianiline, monoethyl methylenedianiline, and diethyl methylenedianiline having a viscosity of less than about 1000 cps at 40° C.