PATENT CLAIM ANALYSIS

Application Number: 15765496
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-03
Patent Classification: ["562", "600000"]

Abstract:
A process for the recovery of polymer-grade (meth)acrylic acid, in the absence of organic solvent, from a gaseous reaction mixture comprising (meth)acrylic acid obtained by gas-phase oxidation of a precursor of the (meth)acrylic acid, the process carried out in a plant comprising at least one dehydration column and one finishing column, being characterized by the presence of at least one chemical treatment agent targeted at reducing the content of residual aldehydes. (Meth)acrylic acid obtained according to the invention meets criteria of high quality allowing it to be used in the manufacture of acrylic polymers, in particular for superabsorbents. This grade is also known as glacial acrylic acid GAA.

Claim (Index 13):
The process according to  claim 1  wherein a second drawing off is carried out in the gas phase on the finishing column, at a position located below the drawing off of a sidestream of the purified acrylic acid.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 1.72973
- Patent Class: 562.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15556308', '15118126', '12439620', '15658677', '13469215']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7582446006274599
- 35 USC 102 Novelty (BERT): 0.5394003752769577
- Combined Prediction Score: 0.7363601780924096
- Mean Citation Score: 314.6904760000001
- Max Citation Score: 370.35394
- Similarity Product: 243.60613567133663

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