MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202521023450 A) filed by Hemant Ratnakar Bandodkar on March 17, 2025, for Oxime Based Non-Phenol Compounds For Colour Producing Composition.
Inventors include Hemant Ratnakar Bandodkar; and Dilip Chandrakant Sawant.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: OXIME BASED NON-PHENOL COMPOUNDS FOR COLOUR PRODUCING COMPOSITION The present invention relates to novel oxime derivatives for preparation of color producing composition with excellent image preservability. The color developers used in thermal paper are mainly derivatives of phenol. The most of the phenolic compounds are found to have raised environmental and health issues hence demanding sustainable and environmentally phenol-free alternatives. The present invention is provided a novel oxime-based compounds as a thermal paper colour developer that is not only an alternative to phenol-based developers but also cost effective compared to other non-phenolic colour developers. The present invention presented an oxime-based compound which is in form of either mono-oxime and/or di-oxime derivatives linked with substituted groups such as hydrazide; semicarbazide; carbohydrazide; thiosemicarbazide; thiocarbohydrazide; 4,4’- diaminodiphneyl sulfone and the recording material in combination with heat sensitive dye such as ODB-2 and sensitizers get excellent performance.
Disclaimer: Curated by HT Syndication.
