PATENT CLAIM ANALYSIS

Application Number: 16315680
Application Type: Utility
Filing Date: 2019-01
Publication Date: 2019-07
Patent Classification: ["549", "531000"]

Abstract:
Disclosed herein is a process for purifying propylene oxide, including the steps of: (i) providing a stream S0 containing propylene oxide, acetonitrile, water, and an organic compound containing a carbonyl group —C(═O)—; and (ii) separating propylene oxide from the stream S0 by subjecting the stream S0 to distillation conditions in a distillation column to obtain a gaseous top stream S1c which is enriched in propylene oxide compared to the stream S0, a liquid bottoms stream S1a which is enriched in acetonitrile and water compared to the stream S0, and a side stream S1b containing propylene oxide which is enriched in the carbonyl compound compared to the stream S0.

Claim (Index 1):
A process for purifying propylene oxide, the process comprising:\n providing a stream S0 comprising propylene oxide, acetonitrile, water, and an organic compound comprising a carbonyl group \u2014C(\u2550O)\u2014, wherein said organic compound comprising a carbonyl group \u2014C(\u2550O)\u2014 comprises one or more of acetone and propionaldehyde; and (ii) separating propylene oxide from the stream S0 by distillation, comprising subjecting the stream S0 to distillation conditions in a distillation column, obtaining a gaseous top stream S1c which is enriched in propylene oxide compared to the stream S0, a liquid bottoms stream S1a which is enriched in acetonitrile and water compared to the stream S0, and a side stream S1b comprising propylene oxide which is enriched in the carbonyl compound compared to the stream S0; wherein: the distillation column is operated at an absolute pressure at the top of the distillation column in the range of from 0.1 to 2.0 bar and an internal reflux ratio in the range of from 2.0 to 6.0; and the distillation column exhibits at least 100 theoretical trays, the rectifying section of the distillation column consists of from 30 to 70% of the theoretical trays and the stripping section of the distillation column consists of from 70 to 30% of the theoretical trays.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 99.0
- Lexical Diversity: 2.19298
- Patent Class: 549.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['16315345', '15521924', '16318221', '16076600', '14908042']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6810097008918975
- 35 USC 102 Novelty (BERT): 0.5235156752992478
- Combined Prediction Score: 0.6652602983326326
- Mean Citation Score: 276.243632
- Max Citation Score: 331.9964
- Similarity Product: 309.7263120100976

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