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. 19, 2019
Filed:
Mar. 24, 2017
Lg Chem, Ltd., Seoul, KR;
LG Chem, Ltd., , KR;
Abstract
The present invention relates to a method for analyzing the length of sulfur crosslinking bonds in a vulcanized rubber using NMR spectrum. In some embodiments, the method comprises obtaining, independently, a carbon-13 nuclear magnetic resonance (C NMR) spectrum of a standard substance, wherein the standard substance containing carbon atoms, and aC NMR spectrum of the vulcanized rubber, wherein theC NMR spectrum of the standard substance and theC NMR spectrum of the vulcanized rubber are obtained under the same conditions; obtaining, independently, free induction decay (FID) amplification values of characteristic peaks in theC NMR spectrum of the standard substance, and FID amplification values of characteristic peaks in theC NMR spectrum of the vulcanized rubber; and measuring the length of sulfur crosslinking bonds in the vulcanized rubber.