PATENT CLAIM ANALYSIS

Application Number: 16063301
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["570", "178000"]

Abstract:
The invention relates to a method for purifying 2,3,3,3-tetrafluoro-1-propene (1234yf) using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 1,1,1,2,2-pentafluoropropane (245cb) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distillation of said second composition in order to form a third composition comprising said organic extraction agent and trans-1,3,3,3-tetrafluoro-I-propene (I234ze-E), and a stream comprising the 2,3,3,3-tetrafluoro-I-propene and the 1,1,1,2,2-pentafluoropropane (245cb); and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising the trans-1,3,3,3-tetrafluoro-I-propene (1234ze-E). The invention also relates to a method for producing 2,3,3,3-tetrafluoro-I-propene.

Claim (Index 27):
A process for producing and purifying 2,3,3,3-tetrafluoro-1-propene, comprising:\n A) fluorination in the presence of a catalyst for a compound of formula (I) CX(Y) 2 \u2014CX(Y) m \u2014CH m XY in which X and Y independently represent a hydrogen, fluorine or chlorine atom and m=0 or 1; and/or catalytic fluorination in the presence of a catalyst for a compound of formula (CX n Y 3\u2212n )CH p X 1\u2212p CH m X 2\u2212m  (II) in which X is, independently of each other, Cl, F, I or Br; Y is, independently of each other, H, Cl, F, I or Br; n is 1, 2 or 3; and m is 0, 1 or 2; and p is 0 or 1; B) recovering a stream comprising 2,3,3,3-tetrafluoro-1-propene, 1,1,1,2,2-pentafluoropropane (245cb), trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E) and optionally or not at least one of the compounds selected from the group consisting of chloromethane (40), 1,1-difluoroethane (152a), 1,1,1,2-tetrafluoroethane (134a), chloropentafluoroethane (115), trans-1,2,3,3,3-pentafluoropropene (1225ye-E), cis-1,2,3,3,3-pentafluoropropene (1225ye-Z) and 3,3,3-trifluoropropene (1243zf); and C) purifying 2,3,3,3-tetrafluoro-1-propene as claimed in  claim 16  using the stream recovered in step B).

Metadata:
- Claim Count in Document: 2.0
- Percentile: 94.0
- Lexical Diversity: 2.55357
- Patent Class: 570.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16064013', '16063302', '16063304', '14643668', '13281063']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7823341870551852
- 35 USC 102 Novelty (BERT): 0.6588350923075507
- Combined Prediction Score: 0.7699842775804218
- Mean Citation Score: 555.11697
- Max Citation Score: 659.5174599999998
- Similarity Product: 614.5229647463725

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