PATENT CLAIM ANALYSIS

Application Number: 15746462
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["526", "064000"]

Abstract:
Disclosed herein is a process for producing polymers of an N-vinyl carboxamide, including the steps of flowing a reaction mixture containing an aqueous liquid containing at least one polymerisation initiator, N-vinyl carboxamide monomer or a monomer mixture containing N-vinyl carboxamide into a reactor system, and polymerising the monomer or monomer mixture to produce the polymer of a N-vinyl carboxamide. The polymers resulting therefrom may be hydrolysed to provide polymers containing vinyl amine units. Also disclosed herein is an apparatus suitable for producing the polymers.

Claim (Index 11):
The process of  claim 1 , comprising:\n a) combining an optionally buffered aqueous liquid and the N-vinyl carboxamide monomer or monomer mixture comprising the N-vinyl carboxamide to form the reaction mixture, and optionally passing the reaction mixture through a static mixer; b) adding at least one polymerisation initiator into the reaction mixture either i) before feeding the reaction mixture into a first mixed flow reactor, in which the so treated reaction mixture is optionally passed through a static or dynamic mixer before entering said first mixed flow reactor; or ii) into the first mixed flow reactor in step (c); c) flowing reaction mixture into said first mixed flow reactor in which the monomer or monomer mixture in the reaction mixture polymerises as it passes through said first mixed flow reactor to form a partially polymerised reaction product within the reaction mixture; d) flowing a portion of the reaction mixture resulting from step (c) in a recycle loop to the reaction mixture prior to entering the first mixed flow reactor and adding further at least one polymerisation initiator to the remainder of the reaction mixture resulting from step (c) either i) before feeding the reaction mixture into a second mixed flow reactor, in which the so treated reaction mixture is optionally passed through a static or dynamic mixer before entering said second mixed flow reactor; or ii) into the second mixed flow reactor in step (e); e) flowing the reaction mixture resulting from step (d) into a second mixed flow reactor in which the monomer or monomer mixture in the reaction mixture polymerises as it passes through the second mixed flow reactor to form a further polymerised reaction product within the reaction mixture; f) flowing a portion of the reaction mixture resulting from step (e) in a recycle loop to the reaction mixture prior to entering the second mixed flow reactor and adding further at least one polymerisation initiator to the remainder of the reaction mixture resulting from step (e) either i) before feeding the reaction mixture into at least one single pass tubular reactor, in which the so treated reaction mixture is optionally passed through a static mixer before entering the single pass tubular reactor, or ii) into the at least one single pass tubular reactor in step (g); g) flowing the remaining reaction mixture of step (f) into the at least one single pass tubular reactor in which remaining monomer or monomer mixture in the reaction mixture polymerises as it passes through the at least one single pass tubular reactor to form the polymer of N-vinyl carboxamide.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 1.73077
- Patent Class: 526.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13787949', '11845807', '12242108', '13056395', '13003253']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7507534427486396
- 35 USC 102 Novelty (BERT): 0.4818216390890259
- Combined Prediction Score: 0.7238602623826783
- Mean Citation Score: 228.794548
- Max Citation Score: 243.11426
- Similarity Product: 189.73626036940337

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