PATENT CLAIM ANALYSIS

Application Number: 16072843
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2019-03
Patent Classification: ["546", "319000"]

Abstract:
Disclosed is a process for preparing menthyl nicotinate with high purity and yield, which consists of a transesterification reaction of menthol with a C 1 -C 4  alkyl ester of the nicotinic acid, in the presence of an alkaline catalyst belonging to the class of C 1 -C 4  alkoxides, linear or branched, and a vacuum distillation of the mixture of reaction products, in the presence of activated carbons.

Claim (Index 11):
A process for preparing highly pure menthyl nicotinate in the absence of hazardous solvents, said process comprising the following steps\n Step 1: transesterification reaction of menthol with a C 1 -C 4  alkyl ester of nicotinic acid, in the presence of an alkaline catalyst belonging to the class of C 1 -C 4  alkoxides, linear or branched, at a temperature comprised between 40\u00b0 C. and 150\u00b0 C., wherein menthol is in a molar ratio comprised between 1:1 and 20:1 with respect to said alkyl ester of nicotinic acid, said reaction being conducted under partial vacuum to facilitate the removal of the sole C 1 -C 4  alkyl alcohol which is formed by the reaction, and then filtering the product obtained by the reaction so as to separate the residue of the catalyst from the reaction products; Step 2\u2014Distillation of the mixture of reaction products obtained from step 1, in the presence of activated carbons having a concentration between 0.1 and 5%, with respect to the mass of reaction (mixture) to be distilled, under conditions of temperature and vacuum such as to distil firstly said C 1 -C 4  alkyl ester of nicotinic acid that has not reacted in step 1, then the excess of menthol and subsequently the pure menthyl nicotinate.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 95.0
- Lexical Diversity: 1.5625
- Patent Class: 546.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14647532', '14446842', '12696200', '10611025', '11249243']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7060664982557385
- 35 USC 102 Novelty (BERT): 0.4679920422135702
- Combined Prediction Score: 0.6822590526515218
- Mean Citation Score: 137.221234
- Max Citation Score: 156.855
- Similarity Product: 122.18279683470725

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