PATENT CLAIM ANALYSIS

Application Number: 16039447
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["570", "156000"]

Abstract:
The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene from 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into a reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF, and optionally 1,1,1,2,2-pentafluoropropane; (b) separating the reaction mixture into a first stream comprising HCl and 2,3,3,3-tetrafluoropropene and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and optionally 1,1,1,2,2-pentafluoropropane; (c) catalytic reaction of the second stream into a reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane and (d) feeding the reaction mixture of step (c) directly without separation to step (a).

Claim (Index 11):
A process for producing 2,3,3,3-tetrafluoropropene, comprising\n (a) in a first reaction zone, reacting 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF in the presence of a catalyst to produce a first reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane, wherein the catalyst comprises a supported or unsupported catalyst containing at least one metal selected from the group consisting of Cr, Ni, Fe, Zn, Ti, V, Zr, Mo, Ge, Sn, Pb, Mg, Sb, Co, Ru, Rh, Pd, Os, Ir, Pt, Mn, Re, Sc, Y, La, Hf, Cu, Ag, Au, and metals having an atomic number of 58 through 71; (b) separating the first reaction mixture into a first stream and a second stream comprising 2-chloro-3,3,3-trifluoropropene; (c) in a second reaction zone, reacting HF and the second stream in the presence of a catalyst in a gas phase to produce a second reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene and HF and optionally 1,1,1,2,2-pentafluoropropane; and; (d) feeding the second reaction mixture of step (c) directly to step (a).

Metadata:
- Claim Count in Document: 23.0
- Percentile: 95.0
- Lexical Diversity: 2.5102
- Patent Class: 570.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15095911', '14363918', '16060037', '13879435', '13980669']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7721361888213311
- 35 USC 102 Novelty (BERT): 0.5961104706767973
- Combined Prediction Score: 0.7545336170068777
- Mean Citation Score: 447.726318
- Max Citation Score: 491.6967
- Similarity Product: 483.4206399123431

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