PATENT CLAIM ANALYSIS

Application Number: 15751959
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["562", "519000"]

Abstract:
A process for stably and safely producing acetic acid without increasing an internal pressure of a distillation column is provided. The process comprises ( 1 ) a carbonylation reaction step for allowing methanol to react with carbon monoxide; ( 2 ) a flash step for separating the reaction mixture into a volatile phase and a less-volatile phase; ( 3 ) a first distillation step for separating the volatile phase into a first overhead and a crude acetic acid stream rich in acetic acid; and ( 4 ) a separation step for separating at least acetaldehyde from the first overhead. The separation step ( 4 ) comprises ( 6 ) a second distillation step for distilling the first overhead while controlling an internal pressure of a distillation column provided with a pressure control unit  68  to form a second overhead rich in acetaldehyde and methyl iodide and a bottom or lower stream, and ( 7 ) an extraction step for extracting acetaldehyde from the second overhead to form an extract rich in acetaldehyde and a raffinate rich in methyl iodide.

Claim (Index 38):
The process according to  claim 37 , wherein the second overhead is condensed to form a condensate and an off-gas, the condensate is subjected to the extraction step, at least one component separated from the off-gas and selected from the group consisting of methyl iodide, methyl acetate, dimethyl ether, water, and carbon monoxide is directly or indirectly recycled to at least one step selected from the group consisting of a reaction step and the distillation step.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 88.0
- Lexical Diversity: 2.35443
- Patent Class: 562.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15565604', '14440545', '15577524', '14488900', '11788455']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8023266972646069
- 35 USC 102 Novelty (BERT): 0.5351592814433701
- Combined Prediction Score: 0.7756099556824833
- Mean Citation Score: 362.925106
- Max Citation Score: 369.48203
- Similarity Product: 301.3004245836741

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