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 12):
The method as claimed in  claim 1 , wherein the amount of formic acid extracted from the reaction mixture in the second extraction step is only such that the pH of the reaction mixture does not rise above 3, more particularly not above 2.5.

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): 0.695879137949475
- 35 USC 102 Novelty (BERT): 0.5319628951108958
- Combined Prediction Score: 0.6794875136656171
- Mean Citation Score: 255.75587200000004
- Max Citation Score: 289.97507
- Similarity Product: 173.9355479355228

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