PATENT CLAIM ANALYSIS

Application Number: 15863484
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-05
Patent Classification: ["562", "519000"]

Abstract:
Processes for purifying acetic acid by distilling a process in a column in which acetic anhydride is formed in the lower portion of the column. The product stream withdrawn from the column comprises acetic acid, water at a concentration of no more than 0.2 wt. %, and acetic anhydride at a concentration of no more than 600 wppm. The process further comprises hydrating the acetic anhydride in the product stream to form a purified acetic acid product comprising acetic anhydride at a concentration of no more than 50 wppm.

Claim (Index 40):
A process for producing acetic acid comprising:\n a. carbonylating, in a reactor, at least one member selected from the group consisting of methanol, dimethyl ether, and methyl acetate in a reaction medium comprising water at a concentration from 0.1 to 14 wt. %, a rhodium catalyst, methyl iodide, and an iodide salt; b. separating the reaction medium to form a liquid recycle stream and a vapor product stream; c. distilling at least a portion of the vapor product stream in a first column to obtain a side stream comprising acetic acid at a concentration greater than 90 wt. %, water at a concentration from 1 to 3 wt. %, one or more C 1 -C 14  alkyl iodides in a total concentration of no more than 6 wt. % and methyl acetate at a concentration of no more than 6 wt. %; d. distilling the side stream in a second column to obtain a product stream comprising acetic acid, water at a concentration of no more than 0.2 wt. % and acetic anhydride at a concentration of no more than 600 wppm; and e. hydrating the product stream at a temperature from 25\u00b0 C. to 120\u00b0 C. and a pressure ranging from 0.1 MPa to 1 MPa to reduce the acetic anhydride concentration in the product stream.

Metadata:
- Claim Count in Document: 23.0
- Percentile: 86.0
- Lexical Diversity: 2.06522
- Patent Class: 562.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15348466', '15348338', '14873636', '14874355', '14874250']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.723141033097691
- 35 USC 102 Novelty (BERT): 0.5791479224827729
- Combined Prediction Score: 0.7087417220361992
- Mean Citation Score: 396.337164
- Max Citation Score: 451.5657
- Similarity Product: 424.4715685154914

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