Chemistry: natural resins or derivatives; peptides or proteins; – Lignins or derivatives – Carboxylic acid anhydride – or a compound having halogen...
Patent
1999-02-25
2000-04-25
Acquah, Samuel A.
Chemistry: natural resins or derivatives; peptides or proteins;
Lignins or derivatives
Carboxylic acid anhydride, or a compound having halogen...
568579, 568613, 524 73, 524539, 524735, 524765, 528422, 528425, 525 5442, 525437, 527604, 530502, 530505, 530507, C07G 100, C08F 1606
Patent
active
060545623
ABSTRACT:
Lignin and polyether glycol produces a product which has a distinct melt point and melt viscosity. Polyether glycol has a plasticizing effect wherein the lignin can be thought of as the hard resin. When 20 parts of polyether glycol are processed with 80 parts of lignin a new material which has a melt point and a viscosity is created whereas lignin itself has no melt and flow characteristics. The new modified lignin can be cured with hexamine like a phenolic resin.
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patent: 4376171 (1983-03-01), Blount
patent: 4918167 (1990-04-01), Glasser et al.
patent: 5102992 (1992-04-01), Glasser et al.
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