Process for the production of phenolic-rich pyrolysis oils for u

Details Process for the production of phenolic-rich pyrolysis oils for u Process for the production of phenolic-rich pyrolysis oils for u

1999-02-05

2000-11-07

Truong, Duc

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528 1, 528 16, 528497, 528509C, 524 13, 524 72, 524 73, 524 74, 524735, 568727, 203 40, 203 42, 203 46, C08G 804, C08G 1404

Patent

active

061438561

ABSTRACT:
A phenolic-rich pyrolysis oil is produced by pyrolysing lignocellulosic material at a temperature of no more than about 550.degree. C under an absolute pressure of no more than about 50 kPa to produce pyrolysis vapors, and condensing the pyrolysis vapors to obtain a condensate consisting of a phenolic-rich pyrolysis oil having a dew point of about 65 to about 75.degree. C. under an absolute pressure of about 15 to about 20 kPa. Such a phenolic-rich pyrolysis can be directly used in making phenol-formaldehyde resol resins.

REFERENCES:
patent: 4233465 (1980-11-01), Gallivan et al.
patent: 4962269 (1990-10-01), Chum et al.
patent: 5034498 (1991-07-01), Himmelblau
patent: 5115084 (1992-05-01), Himmelblau

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