PATENT CLAIM ANALYSIS

Application Number: 15760030
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["560", "210000"]

Abstract:
The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein. Methyl methacrylate is used in large amounts for preparing polymers and copolymers with other polymerizable compounds. In addition, methyl methacrylate is an important synthesis unit for a variety of specialty esters based on methacrylic acid (MAA) which can be prepared by transesterification with the appropriate alcohol. There is consequently a great interest in very simple, economic and environmentally friendly processes for preparing this starting material. In particular the present invention relates to an optimized workup of the reactor effluent from the oxidative esterification of methacrolein by means of which process waste streams can be minimized and process water can be recycled in optimal fashion. The methacrylic acid generated in the process is also optimally recovered and isolated or converted into the commodity alkyl methacrylate. This process moreover has the advantage that fewer demands than described in the prior art are placed on plant apparatus configuration.

Claim (Index 6):
The process according to  claim 2 , wherein the feeding of the strong acid into the heavy phase from the extraction is effected directly upstream of the distillation column IV.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 90.0
- Lexical Diversity: 1.58716
- Patent Class: 560.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14916440', '15753206', '14917114', '15521762', '16096730']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7556730651791489
- 35 USC 102 Novelty (BERT): 0.5566474530627138
- Combined Prediction Score: 0.7357705039675054
- Mean Citation Score: 298.225012
- Max Citation Score: 346.92825
- Similarity Product: 245.2759627094865

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