PATENT CLAIM ANALYSIS

Application Number: 16064013
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["570", "160000"]

Abstract:
The present invention concerns a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) from a first composition comprising 2,3,3,3-tetrafluoro-1-propene and at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a), chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) said method comprising the steps consisting of: a) bringing said first composition into contact with at least one organic extractant in order to form a second composition; b) extractive distillation of said second composition in order to form (i) a third composition comprising said organic extractant and said at least one of the compounds chosen from the group consisting of 1,1-difluoroethane (152a) chloropentafluoroethane (115), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E); and ii) a stream comprising 2,3,3,3-tetrafluoro-1-propene. The invention also concerns a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene.

Claim (Index 15):
The process as claimed in  claim 14 , wherein the first composition comprises 2,3,3,3-tetrafluoro-1-propene, trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) and optionally or not at least one compound selected from the group consisting of 1,1-difluoroethane (152a) and chloropentafluoroethane (115) and the third composition comprises said organic extracting agent, trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) and optionally or not at least one compound selected from the group consisting of 1,1-difluoroethane (152a) and chloropentafluoroethane (115); and wherein step c) comprises recovering said third composition and separating between, on the one hand, said organic extracting agent and, on the other hand, trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) and optionally or not at least one compound selected from the group consisting of 1,1-difluoroethane (152a) and chloropentafluoroethane (115).

Metadata:
- Claim Count in Document: 2.0
- Percentile: 94.0
- Lexical Diversity: 2.53448
- Patent Class: 570.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16063301', '16063304', '16063302', '15267599', '12278789']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7758939145457492
- 35 USC 102 Novelty (BERT): 0.6844032430028109
- Combined Prediction Score: 0.7667448473914554
- Mean Citation Score: 528.21127
- Max Citation Score: 805.5877
- Similarity Product: 644.3071526736378

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