PATENT CLAIM ANALYSIS

Application Number: 16076600
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-03
Patent Classification: ["549", "531000"]

Abstract:
A continuous process for the preparation of propylene oxide, comprising a start-up stage and normal run stage, wherein the normal run stage comprises (i) continuously providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, a formate salt, water and optionally propane, wherein in the liquid feed stream, the molar amount of the formate salt relative to the molar amount of hydrogen peroxide at a given point of time during the normal run stage is a N (Fo/H 2 O 2 ); (ii) continuously passing the liquid feed stream provided in (i) into an epoxidation zone comprising a catalyst comprising a titanium zeolite having framework type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the formate salt, optionally propene, and optionally propane; (iii) continuously removing an effluent stream from the epoxidation zone, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the formate salt, optionally propene, and optionally propane; wherein the normal run stage is characterized in an average rate of change of a N (Fo/H 2 O 2 ) of less than 0 h −1 .

Claim (Index 20):
A method for increasing the propylene oxide selectivity of a catalyst comprising a titanium zeolite having framework type MWW in a continuous process for preparing propylene oxide, said continuous process for preparing propylene oxide comprising:\n continuously providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, a formate salt, water and optionally propane, wherein in the liquid feed stream, the molar amount of the formate salt relative to the molar amount of hydrogen peroxide at a given point of time is a N (Fo/H 2 O 2 ); and (ii) continuously passing the liquid feed stream provided in (i) into an epoxidation zone comprising the catalyst comprising a titanium zeolite having framework type MWW, and subjecting the liquid feed stream to epoxidation reaction conditions in the epoxidation zone, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the formate salt, optionally propene, and optionally propane; said method for increasing the propylene oxide selectivity comprising decreasing a N (Fo/H 2 O 2 ) in the course of said continuous process at otherwise constant epoxidation conditions, wherein the formate salt is a potassium formate salt and the titanium zeolite having framework type MWW comprised in the catalyst according to (ii) contains titanium, calculated as elemental titanium, in an amount ranging in the range of from 0.1 to 5 weight-%, based on the total weight of the titanium zeolite having framework type MWW, and contains zinc, calculated as elemental zinc, in an amount ranging in the range of from 0.1 to 5 weight-%, based on the total weight of the titanium zeolite having framework type MWW.

Metadata:
- Claim Count in Document: 50.0
- Percentile: 96.0
- Lexical Diversity: 2.65517
- Patent Class: 549.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14908042', '14907998', '14906852', '15550581', '16315680']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7310750497980733
- 35 USC 102 Novelty (BERT): 0.5093559012362514
- Combined Prediction Score: 0.708903134941891
- Mean Citation Score: 276.25853
- Max Citation Score: 305.87823
- Similarity Product: 255.65400672803693

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

Dataset: test