PATENT CLAIM ANALYSIS

Application Number: 16129375
Application Type: Utility
Filing Date: 2018-09
Publication Date: 2019-03
Patent Classification: ["562", "118000"]

Abstract:
The present invention relates to a process for operating a plant for preparing an alkanesulfonic acid, wherein said alkanesulfonic acid is prepared by oxidation of an alkylmercaptan, dialkydisulfide and/or dialkylpolysulfide and the one or more alkyl radicals of the alkylmercaptan, dialkydisulfide and/or dialkylpolysulfide are identical with the alkyl radical of the alkylsulfonic acid to be prepared, characterized in that the oxidation is performed in the presence of an at least stoichiometric amount of an oxoacid of nitrogen, e.g. nitric acid, relative to the amount of said alkylmercaptan, dialkyldisulfide and/or dialkylpolysulfide during the start-up phase of the plant of the plant, wherein the start up phase comprises the steps adding an oxoacid of nitrogen to the reactor, adding sulfur-containing reactant progressively so that it is converted to alkanesulfonic acid, filling up the compile volume of the reactor by adding progressively sulfur-containing reactant and if needed oxoacid of nitrogen to make sure that it is in excess, once the reactor is full, transitioning out of the start-up phase by adding an oxygen containing fluid, and during the running phase, keeping the reaction volume full by balancing the volume of product withdrawn with the volume of sulfur-containing reactant added.

Claim (Index 3):
The process according to  claim 1 , wherein the oxoacid of nitrogen is nitric acid and the process further comprises:\n i\u2032) providing at least the amount of nitric acid according to the formula: nitric \ue89e \ue89e acid \ue89e [ mol ] > ( available \ue89e \ue89e inner \ue89e \ue89e volume \ue89e \ue89e reactor \ue89e [ l ] * density \ue89e \ue89e alkanesulfonic \ue89e \ue89e acid \ue89e [ kg l ] * 0.01 ) molar \ue89e \ue89e weight \ue89e \ue89e of \ue89e \ue89e nitrogen \ue89e \ue89e dioxide \ue89e [ kg mol ] in the reactor,\n ii\u2032) feeding at least one of an alkylmercaptan containing stream, a dialkydisulfide containing stream, and a containing stream into the nitric acid of step i\u2032) to give an alkanesulfonic acid containing product mixture, and \n iv\u2032) after consumption of the nitric acid in step ii\u2032) feeding an oxygen containing fluid stream into the alkanesulfonic acid containing product mixture.

Metadata:
- Claim Count in Document: 15.0
- Percentile: 97.0
- Lexical Diversity: 2.30435
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15102842', '15778802', '15774847', '13069939', '13061751']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7099928434664572
- 35 USC 102 Novelty (BERT): 0.5066970767880621
- Combined Prediction Score: 0.6896632667986177
- Mean Citation Score: 189.93477
- Max Citation Score: 251.39203
- Similarity Product: 182.47384547556345

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test