1620-70-8Relevant academic research and scientific papers
Reaction of a lignin model dimer sequentially with chlorine and sodium hydroxide
McKague,Reeve
, p. 573 - 576 (1994)
Dimer 9, which is representative of diaryl methane structures reported present in residual lignin, was reacted with aqueous chlorine at 50 °C. The major product was identified as the tetrachloroquinone dimer 13 (x = 2, y = 2). Similar reaction of the tetr
Lignin-based diphenylmethane diisocyanate as well as preparation method and application thereof
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Paragraph 0093-0096; 0113-0116, (2021/11/21)
The invention discloses a lignin-based diphenylmethane diisocyanate and a preparation method and application thereof. As shown in Formula I, the lignin-based diphenylmethane diisocyanate is prepared by reacting a lignin-cracking monomer compound II with a carbonyl compound to give compound III, compound III reacts with chloroacetyl ammonia to obtain compound IV, compound IV is subjected Smiles rearrangement reaction to obtain compound V, and compound V is reacted with a compound containing carbon-containing acid to obtain the lignin-based diphenylmethane diisocyanate shown in formula I. The product replaces MDI for synthesis of polyurethane materials, and the toughness of the polyurethane material is improved. Thermal stability and glass transition temperature. When being applied to polyurethane waterproof coating, the water absorption rate is obviously reduced, and the stability of the coating is improved.
Renewable polyphenols, thermoplastics, and resins
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Page/Page column 6; 10-11, (2019/04/26)
A series of renewable bisphenols has been synthesized from creosol (2-methoxy-4-methylphenol) through stoichiometric condensation with short chain aldehydes. Creosol can be readily produced from lignin, potentially allowing for the large scale synthesis o
Synthesis, characterization, and cure chemistry of renewable bis(cyanate) esters derived from 2-methoxy-4-methylphenol
Meylemans, Heather A.,Harvey, Benjamin G.,Reams, Josiah T.,Guenthner, Andrew J.,Cambrea, Lee R.,Groshens, Thomas J.,Baldwin, Lawrence C.,Garrison, Michael D.,Mabry, Joseph M.
, p. 771 - 780 (2013/05/09)
A series of renewable bis(cyanate) esters have been prepared from bisphenols synthesized by condensation of 2-methoxy-4-methylphenol (creosol) with formaldehyde, acetaldehyde, and propionaldehyde. The cyanate esters have been fully characterized by infrar
Synthesis of renewable bisphenols from creosol
Meylemans, Heather A.,Groshens, Thomas J.,Harvey, Benjamin G.
experimental part, p. 206 - 210 (2012/06/30)
A series of renewable bisphenols has been synthesized from creosol (2-methoxy-4-methylphenol) through stoichiometric condensation with short-chain aldehydes. Creosol can be readily produced from lignin, potentially allowing for the large scale synthesis o
