PATENT CLAIM ANALYSIS

Application Number: 15762224
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["422", "110000"]

Abstract:
The invention relates to a method for an economically and technically improved embodiment of a production interruption in a production method for isocyanates by phosgenation of the corresponding amines, in which the entire production plant is not closed while one or more parts of the plant is taken out of operation, rather the input materials and/or reaction products available in the production plant are recirculated through at least one part of the plant that has not been taken out of operation. The invention further relates to a plant for producing isocyanates and to a method for operating a plant for producing isocyanates.

Claim (Index 9):
A plant for preparation of isocyanates in the liquid phase, comprising the following plant sections:\n I) a reaction zone comprising\n I.6) a unit for providing an amine in the form of an amine solution in a solvent, \n I.7) a unit for providing phosgene the form of a phosgene solution in a solvent, \n I.8) a unit for providing a solvent, \n I.9) a mixing unit for mixing the amine solution with the phosgene solution and optionally further solvent and \n I.10) a reaction space arranged downstream of the mixing unit, for conducting the phosgenation, with a separator unit optionally connected downstream, wherein the reaction space or the separator apparatus have optionally been provided with outlet conduits for a liquid stream and a gaseous stream; \n II) a distillation apparatus configured to separate the liquid stream from I) into a liquid stream and a gaseous stream; III) a distillation apparatus configured to separate the liquid stream from II) into a gaseous stream and a liquid stream; IV) a distillation apparatus configured to separate the gaseous stream from III), into a liquid stream and a gaseous stream; V) a distillation apparatus configured to obtain a liquid isocyanate stream from the liquid stream in III), resulting in a gaseous stream comprising secondary components and optionally solvent, and optionally comprising an upstream unit for polymer removal for removal of polymeric isocyanate fractions; VI) an absorption apparatus configured to absorb the gaseous streams from I), II) and IV), and in solvent to obtain a liquid stream and a gaseous stream; VII) optionally, an absorption apparatus configured to absorb the gaseous stream from VI) in water; VIII) optionally, a workup apparatus for offgas streams, configured to workup offgas streams at least from VII); IX) optionally an apparatus configured to prepare phosgene, and which is connected to the unit for providing phosgene in I);\n wherein \n an interruption of the plant shuts down one or more of plant sections I) to IX), which comprises reducing \n the mass flow rate m 2  to zero and, in at least one of the plant sections that has not been shut down, \n (i) recycling the output stream of the at least one plant section which has not been shut down into the respective plant section, \n or \n (ii) conducting the output stream of the at least one plant section which has not been shut down into a plant section which is upstream or downstream and thence, optionally via further plant sections that have not been shut down, recycling it into the original plant section.

Metadata:
- Claim Count in Document: 30.0
- Percentile: 90.0
- Lexical Diversity: 1.82759
- Patent Class: 422.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15128813', '16325809', '16327443', '15127826', '15762227']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8068440213024352
- 35 USC 102 Novelty (BERT): 0.5222991377827603
- Combined Prediction Score: 0.7783895329504676
- Mean Citation Score: 352.980354
- Max Citation Score: 358.66257
- Similarity Product: 272.645930652448

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

Dataset: test