PATENT CLAIM ANALYSIS

Application Number: 15756320
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["570", "136000"]

Abstract:
The present invention relates to a process for preparation of olefins containing fluorine.

Claim (Index 21):
The process for preparation of 2,3,3,3-tetrafluoropropene of  claim 10  comprising:\n a) providing a mixture of methyl chloride to chlorodifluoromethane in a first reactor, said mixture is either premixed or added separately; \n b) providing and contacting heat medium with step a) mixture to form a second mixture comprising 2,3,3,3-tetrafluoropropene, methyl chloride and fluorinated compounds having a boiling point in the range of \u221214 to \u221290\u00b0 C.; \n c) drying the second mixture of step b) to obtain an anhydrous second mixture; \n d) contacting the anhydrous second mixture of step c) with a solvent to obtain an anhydrous mixture 3\u2032 in gas phase and anhydrous mixture 4\u2032 in liquid phase, wherein the anhydrous mixture 3\u2032 comprises methane, tetrafluoroethyelene, trifluoromethane, vinylidene fluoride, difluoromethane, chlorotrifluoroethene, hexafluoropropene, chlorodifluoromethane, 2,3,3,3-tetrafluoropropene, octafluorocyclobutane and methyl chloride and anhydrous mixture 4\u2032 comprises solvent and methyl chloride; \n e) contacting the anhydrous mixture 3\u2032 with 4 \u212b molecular sieves to obtain a mixture 5\u2032, wherein the mixture 5\u2032 is free of methyl chloride and difluoromethane; \n f) subjecting the anhydrous mixture 4\u2032 of step d) to distillation to obtain a mixture 7\u2032 comprising methyl chloride which is recycled into the existing reactor and mixture 8\u2032 comprising solvent which is reused; \n g) subjecting the mixture 5\u2032 of step e) to distillation to obtain a mixture 9\u2032 comprising methane, tetrafluoroethyelene, trifluoromethane, vinylidene fluoride, hexafluoropropene and chlorodifluoromethane and a mixture 10\u2032 comprising chlorotrifluoroethyelene, 2,3,3,3-tetrafluoropropene, octafluorocyclobutane, tetrafluorochloroethane and tetrafluoroethane; \n h) recycling mixture 9\u2032 of step g) to the existing reactor or to the second reactor; \n i) subjecting the mixture 10\u2032 of step g) to distillation to obtain a mixture 11\u2032 comprising 2,3,3,3-tetrafluoropropene and chlorotrifluoroethyelene and a mixture 12\u2032 comprising octafluorocyclobutane, chlorotetrafluoroethanes, tetrafluoroethane and heavies; \n j) subjecting the mixture 12\u2032 of step i) to distillation to obtain a mixture 13\u2032 comprising octafluorocyclobutane, chlorotetrafluoroethanes and tetrafluoroethanes which is recycled into reactor, and \n k) isolating 2,3,3,3-tetrafluoropropene from the mixture 11\u2032.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 88.0
- Lexical Diversity: 1.0
- Patent Class: 570.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14903411', '14486143', '15190535', '14377727', '14486125']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.689022627580807
- 35 USC 102 Novelty (BERT): 0.5015760104693827
- Combined Prediction Score: 0.6702779658696646
- Mean Citation Score: 232.17847200000003
- Max Citation Score: 235.82164
- Similarity Product: 166.4579668155432

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