PATENT CLAIM ANALYSIS

Application Number: 15960860
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-09
Patent Classification: ["570", "153000"]

Abstract:
The invention provides a process for the preparation of 1234yf comprising (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating 245eb to produce 1234yf.

Claim (Index 20):
A continuous or semi-batch process for the preparation of 2,3,3,3-tetrafluoropropene (1234yf), the process comprising:\n (a) contacting 1,1,2,3,3,3-hexafluoropropene (1216) with hydrogen in the presence of a hydrogenation catalyst to produce 1,1,2,3,3,3-hexafluoropropane (236ea); (b) dehydrofluorinating 236ea to produce 1,2,3,3,3-pentafluoropropene (1225ye); (c) contacting 1225ye with hydrogen in the presence of a hydrogenation catalyst to produce 1,2,3,3,3-pentafluoropropane (245eb); and (d) dehydrofluorinating 245eb to produce 1234yf; wherein steps (b) and (d) are carried out in the presence of a base selected from sodium hydroxide and potassium hydroxide; wherein the product from step (a), (b), (c) and/or (d) is subjected to a purification step, wherein the purification is achieved by separation of the desired product in each step from any other products or reagents by one or more distillation, condensation or phase separation steps; and/or scrubbing with water or aqueous base.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 91.0
- Lexical Diversity: 2.10811
- Patent Class: 570.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14876090', '12992637', '14318746', '12510740', '13229016']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7167000009025856
- 35 USC 102 Novelty (BERT): 0.5663966882211904
- Combined Prediction Score: 0.701669669634446
- Mean Citation Score: 339.90032200000013
- Max Citation Score: 432.64178
- Similarity Product: 417.3684349959874

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