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Publication No: IN202411005917 [India] Application No: IN202411005917
Title: One-pot synthesis of cardanol based resin for superhydrophobic wood coating
Publication Date: 01-08-2025 File Date: 29-01-2024
Inventor(s): Sahoo Sushanta Kumar; John Ben
IPC Classification: C07C217/64, C07C213/10, C08G69/40, C09D163/00, C09D5/08, C09D7/65, A61K9/51, B82Y30/00
Abstract:
The one-pot process for synthesis of bio-resin for super-hydrophobic wood coating is developed utilizing cashew nut shell liquid (CNSL) sourced cardanol without the  inclusion of silane, fluorine and nanoparticles. The esterification of cardanol-based diol is carried out using saturated fatty acids, which improved the hydrophobic  properties of the developed resin. The polymerization process does not involve any initiator, catalyst and curing agent. The crosslinked bio-resins showed excellent  thermal stability (250oC), solvent (THF, acetone, hexane, DCM, DMSO), and chemical resistance (pH 3-11) and also displayed superhydrophobicity (contact angle  150? and hysteresis 5?). The esterified bio-resin exhibits excellent self-cleaning and anti-icing properties compared to commercial polyurethane coatings.
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CSIR-National Institute for Interdisciplinary Science and Technology[CSIR-NIIST]
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Industrial Applications Chemistry, Chemical Processes Polymers [Chemistry, Chemical Processes] Coatings [Metallurgy] Post Harvest [Agriculture]