PATENT CLAIM ANALYSIS

Application Number: 15776937
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["560", "347000"]

Abstract:
The invention relates to the production of isocyanates by means of phosgenation of the corresponding primary amines in the gas phase, wherein the reactant flows of amine and phosgene are fed separately to a reactor through a pre-heated inert gas flow. Isocyanates within the sense of the invention are, in the broadest sense, all isocyanates whose corresponding amines can be substantially converted into the gas phase without decomposing, with the exception of 1,5-pentane diisocyanate.

Claim (Index 1):
A process for continuously preparing an isocyanate ( 4 ) other than pentane 1,5-diisocyanate, by reacting the corresponding primary amine ( 1 ) with phosgene ( 2 ) in the presence of an inert substance ( 3 ), comprising:\n (i) providing a gas stream ( 10 ) comprising the primary amine at a temperature of 200\u00b0 C. to 430\u00b0 C.; (ii) providing a phosgene-containing gas stream ( 20 ) at a temperature of 200\u00b0 C. to 430\u00b0 C.; (iii) providing a gaseous inert substance stream ( 30 ) at a temperature of 100\u00b0 C. to 500\u00b0 C.; (iv) feeding the streams  10 ,  20  and  30  from steps (i) to (iii) into a reactor ( 2000 ) for reaction of the primary amine ( 1 ) with the phosgene ( 2 ) in the gas phase, wherein\n a) the reactor ( 2000 ) has flow connection to an at least twin-wall tube ( 1000 ) comprising a first wall ( 1200 ) that encloses the inner portion ( 1100 ) of the tube and a second wall ( 1400 ) that forms a gap ( 1300 ) with the outside of the first wall; \n b) either the stream  10  or the stream  20  is guided through the inner portion ( 1100 ) of the at least twin-wall tube into the reactor; \n c) the stream  30  is guided through the gap  1300  between the first wall and the second wall of the at least twin-wall tube into the reactor; \n d) that stream  10  or  20  which is not guided through the inner portion of the twin-wall tube is guided past the outside of the second wall ( 1400 ) of the at least twin-wall tube such that it comes into contact with the stream  30  at the end of the at least twin-wall tube; \n (v) working up the gaseous crude product stream ( 40 ) formed in the reactor ( 2000 ) to obtain the desired isocyanate ( 4 ).

Metadata:
- Claim Count in Document: 36.0
- Percentile: 93.0
- Lexical Diversity: 1.56863
- Patent Class: 560.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15127826', '15736485', '15128179', '12001235', '12313469']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7025769525015608
- 35 USC 102 Novelty (BERT): 0.546261863063809
- Combined Prediction Score: 0.6869454435577858
- Mean Citation Score: 300.7225180000001
- Max Citation Score: 313.0382
- Similarity Product: 259.6868555741549

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