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Publication No: IN202331062688 [India] Application No: IN202331062688
Title: A SYSTEM FOR ESTIMATION OF COLOR INDEX OF SHELLAC AND A PROCESS THEREOF
Publication Date: 21-03-2025 File Date: 18-09-2023
Inventor(s): Nandkishore Thombare; Saurav Kumar; Amol Purushottam Bhondekar; Aman Upadhyay; Lubhan Cherwoo; Anupma Sharma; Arti Mahto; Ritesh Kumar; Sudeshna Bagchi; Mohammad Fahim Ansari; Abhijit Kar
IPC Classification: G01N 21/78, G06T 7/90, G01N 21/25, G01N 21/84, G01N 33/02
Abstract:
The invention relates to a system and process for  the determination of the color index of lac, which is an important parameter for the determination of quality of lac. The device and process claimed in the invention are  novel, quick (gives reading within 5 seconds), green (saves solvent), accurate, precise, electronic, portable, and does not require skilled manpower as compared to the  conventional manual method. The device consists of a test cell wherein, a predetermined amount of the alcoholic solution of lac is kept for (the determination of color  index) colorimetric analysis. The color spectra of the sample are acquired, which measures degree of color intensity and a data acquisition system wherein, the temporal  response of the spectra at ambient temperature is acquired using an analog-to-digital convertor and the acquired temporal signal is then processed using signal  processing and modeling techniques to improve signal-to-noise ratio correlating spectral signal at an ambient temperature to the color index of the lac.
Startup Options:
Advantages of the invention:
  • The read-out time has been reduced to 5 seconds as compared to the previous subjective methods of color matching. 
  • Distilled spirit is used many times subsequently in conventional methods for matching the color, whereas in the current invention, it is required only during sample preparation. This saves a lot of solvent.  
  • The approach of the present invention is towards a green method of analysis.
  • Results are reproducible and accurate for the types of lac samples.
  • The device developed in the present invention is portable. 
  • Skilled manpower is not required for carrying out the testing. 
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Industrial Applications Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes] Instrumentation, Appliances, Devices Applications [Instrumentation, Appliances, Devices] Measurement [Instrumentation, Appliances, Devices]