PATENT CLAIM ANALYSIS

Application Number: 16063595
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2018-12
Patent Classification: ["585", "607000"]

Abstract:
The invention relates to a method for producing 1,3-butanediene from a butanediol feedstock that includes: a) A step for esterification of butanediol by a carboxylic acid to form the corresponding diester; b) A step for pyrolysis of the diester effluent obtained from step a); c) A step for distillation fed by at least the carboxylic acid effluent obtained from step a), and producing an aqueous distillate and a carboxylic acid residue; d) A step for drying the carboxylic acid that is fed at least by the carboxylic acid residue obtained from step c) and producing a water effluent and a carboxylic acid product that feeds step a).

Claim (Index 1):
Method for producing 1,3-butadiene from a butanediol feedstock that comprises at least:\n a) A step for esterification of butanediol by a carboxylic acid to form the corresponding diester, fed by said butanediol feedstock and by a carboxylic acid feed comprising a carboxylic acid feedstock and the liquid pyrolysis effluent obtained from step b), and producing at least a carboxylic acid effluent and a diester effluent, implemented in reactive distillation in the presence of a homogeneous or heterogeneous acid catalyst, operated at a pressure of between 0.01 and 1 MPa; b) A step for pyrolysis of the diester effluent obtained from step a) comprising a reaction section and a separation section and producing at least a liquid pyrolysis effluent that comprises at least 50% by weight of carboxylic acid and a vapor pyrolysis effluent that comprises more than 90% by weight of butadiene, with said reaction section being operated at a temperature of between 500 and 650\u00b0 C., the effluent of said reaction section being cooled to a temperature that is less than 100\u00b0 C. before feeding said separation section; c) A step for distillation fed by at least the carboxylic acid effluent obtained from step a), operated in a distillation column at a pressure that is at most equal to 1 MPa, with a temperature at the top of the column of between 0 and 110\u00b0 C. and a temperature at the bottom of the column of between 100 and 120\u00b0 C., and producing an aqueous distillate comprising the by-products of step a) and step b), on the one hand, and a carboxylic acid residue, on the other hand; d) A step for drying the carboxylic acid that is fed at least by the carboxylic acid residue obtained from step c) and producing a water effluent and a carboxylic acid product that feeds step a).

Metadata:
- Claim Count in Document: 26.0
- Percentile: 94.0
- Lexical Diversity: 2.42
- Patent Class: 585.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15551754', '15552050', '16302320', '16306086', '13145731']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6675763250642308
- 35 USC 102 Novelty (BERT): 0.5752160499894698
- Combined Prediction Score: 0.6583402975567547
- Mean Citation Score: 335.23417200000006
- Max Citation Score: 457.8846
- Similarity Product: 394.25542586510176

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test