PATENT CLAIM ANALYSIS

Application Number: 16318673
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-08
Patent Classification: ["562", "609000"]

Abstract:
The invention relates to a method for separating formic acid from a reaction mixture by means of extraction, wherein, in addition to the formic acid, the reaction mixture comprises a polyoxometalate ion of general formula [PMo x V y O 40 ] n−  as a catalyst and a solvent that dissolves the catalyst, wherein 6≤x≤11, 1≤y≤6, x+y=12 and 3<n<10, wherein n, x, and y are each a whole number, wherein the separation occurs via extraction by means of a polar organic extraction agent which extracts the formic acid and the catalyst and which is N—(N-Hexadecyl)formamide, N-di-n-acetamide or an N,N-dialkylcarboxamide, wherein the N,N-dialkylcarboxamide forms a phase boundary between the solvent and the extraction agent during mixing with the solvent, wherein the extraction agent is one which, for extraction of the catalyst contained in water at a concentration of 1.5 wt. %, has a catalyst distribution coefficient at 40° C. which is greater by a factor of at least 7 than a distribution coefficient for extraction of the formic acid contained in water at a concentration of 5 wt. % at 40° C., wherein the extraction agent is saturated with the catalyst before the extraction or wherein the catalyst extracted with the formic acid is separated from the extraction agent after extraction by means of precipitation as salt or by means of a further extraction with another polar extraction agent and with a temperature change of the extraction agent and/or an increase of the pH of the extraction agent, and is fed back into the reaction mixture.

Claim (Index 1):
A method for isolating formic acid from a reaction mixture by extraction, wherein the reaction mixture besides the formic acid comprises a polyoxometalate ion of the general formula [PMo x V y O 40 ] n\u2212  as catalyst and a solvent which dissolves the catalyst, where 6\u2264x\u226411, 1\u2264y\u22646, x+y=12, and 3<n<10, where n, x and y are each an integer, where the isolating is accomplished by extraction by means of a polar organic extractant which extracts the formic acid and the catalyst and which is N\u2014(N-hexadecyl)formamide, N-di-n-acetamide or an N,N-dialkylcarboxamide, where the N,N-dialkylcarboxamide on mixing with the solvent forms a phase boundary between the solvent and the extractant, where the extractant is one which, for extraction of the catalyst present at a concentration of 1.5 wt % in water, has a partition coefficient for the catalyst at 40\u00b0 C. that is greater by a factor of at least 7 than a partition coefficient for extraction at 40\u00b0 C. of the formic acid present at a concentration of 5 wt % in water, where the extractant before the extraction is saturated with the catalyst or where the catalyst extracted together with the formic acid is isolated from the extractant after the extraction by means of precipitation as a salt or by means of a further extraction with a polar further extractant and with a temperature change of the extractant and/or with an increase in the pH of the extractant, and is returned to the reaction mixture.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 99.0
- Lexical Diversity: 2.48276
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['16318679', '13823453', '13171928', '13172123', '13672055']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6971574690696329
- 35 USC 102 Novelty (BERT): 0.523106719918172
- Combined Prediction Score: 0.6797523941544868
- Mean Citation Score: 255.75587200000004
- Max Citation Score: 289.97507
- Similarity Product: 214.4020098169232

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test