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US 11,776,665 B2Granted
Method for determining the average deuterium substitution rate
AssigneeLG Chem, Ltd.
InventorsSooyoung Kwak, Eunhee Kim, Young Hee Lim, Yu Ra Lee
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to a method for analysis of an average deuterium substitution rate of a deuterium-substituted sample using information of a 1H-NMR spectrum of the deuterium-substituted sample.
Claims6
A method for determining the average deuterium substitution rate of a deuterium-substituted sample, comprising:
- obtaining 1H-NMR spectra of the deuterium-substituted sample and a standard sample, respectively (step 1), wherein the deuterium-substituted sample and the standard sample is mixed in a weight ratio of 1:100 to 100:1;
- and
- calculating an average deuterium substitution rate ([D %]) of the deuterium-substituted sample from the following Equations 1 and 2 using information of the 1H-NMR spectra (step 2):
- D
- =
- SA
- H
- -
- SA
- M
- *
- (
- SA
- I
- IS
- I
- *
- IS
- W
- SA
- W
- *
- IS
- H
- IS
- M
- )
- 1
- +
- (
- SA
- I
- IS
- I
- *
- IS
- W
- SA
- W
- *
- IS
- H
- IS
- M
- )
- [
- Equation
-
- 1
- ]
- [
- D
-
- %
- ]
- =
- (
- D
- /
- SA
- H
- )
- ×
- 100
- [
- Equation
-
- 2
- ]
- wherein Equation 1,
- ISW is a weight of the standard sample,
- ISI is a 1H-NMR integration value of a specific peak of the standard sample,
- ISM is a molecular weight of the standard sample,
- ISH is a number of hydrogens in a molecule in a specific peak of the standard sample,
- SAW is a weight of the deuterium-substituted sample,
- SAI is a 1H-NMR integration value of the deuterium-substituted sample,
- SAM is a molecular weight of the deuterium-substituted sample before deuterium substitution, and
- SAH is a number of hydrogens in a molecule in the deuterium-substituted sample before deuterium substitution.
75 more elements
Dependencies are inferred from the claim text.