Phenolic compounds containing/neutral fractions extract and products derived therefrom from fractionated fast-pyrolysis oils

Patent · Fri Jan 01 04:00:00 EST 1993

OSTI ID:868832

Chum, Helena L ^[1]; Black, Stuart K ^[2]; Diebold, James P ^[3]; Kreibich, Roland E ^[4]

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1. Arvada, CO
2. Denver, CO
3. Lakewood, CO
4. Auburn, WA

A process for preparing phenol-formaldehyde novolak resins and molding compositions in which portions of the phenol normally contained in said resins are replaced by a phenol/neutral fractions extract obtained from fractionating fast-pyrolysis oils. The fractionation consists of a neutralization stage which can be carried out with aqueous solutions of bases or appropriate bases in the dry state, followed by solvent extraction with an organic solvent having at least a moderate solubility parameter and good hydrogen bonding capacity. Phenolic compounds-containing/neutral fractions extracts obtained by fractionating fast-pyrolysis oils from a lignocellulosic material, is such that the oil is initially in the pH range of 2-4, being neutralized with an aqueous bicarbonate base, and extracted into a solvent having a solubility parameter of approximately 8.4-9.11 [cal/cm.sup.3 ].sup.1/2 with polar components in the 1.8-3.0 range and hydrogen bonding components in the 2-4.8 range and the recovery of the product extract from the solvent with no further purification being needed for use in adhesives and molding compounds. The product extract is characterized as being a mixture of very different compounds having a wide variety of chemical functionalities, including phenolic, carbonyl, aldehyde, methoxyl, vinyl and hydroxyl. The use of the product extract on phenol-formaldehyde thermosetting resins is shown to have advantages over the conventional phenol-formaldehyde resins.

• Research Organization: MIDWEST RESEARCH INSTITUTE
• DOE Contract Number: AC02-83CH10093
• Assignee: Midwest Research Institute Ventures, Inc. (Kansas City, MO)
• Patent Number(s): US 5223601
• OSTI ID: 868832
• Country of Publication: United States
• Language: English

Related Subjects

/528/428/999/585/
11
2-4
4-9
8-3
adhesives
advantages
aldehyde
appropriate
approximately
aqueous
aqueous solution
aqueous solutions
base
bases
bicarbonate
bonding
cal
capacity
carbonyl
carried
cellulosic material
characterized
chemical
cm
components
compositions
compounds
compounds contain
compounds containing
compounds-containing
consists
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containing
conventional
derived
derived therefrom
dry
extract
extract obtained
extracted
extraction
extracts
fast-pyrolysis
fast-pyrolysis oils
followed
fractionated
fractionated fast-pyrolysis
fractionating
fractionating fast-pyrolysis
fractionation
fractions
fractions extract
functionalities
hydrogen
hydroxyl
including
initially
lignocellulosic
lignocellulosic material
material
methoxyl
mixture
moderate
molding
molding composition
molding compositions
molding compound
molding compounds
neutral
neutral fractions
neutralization
neutralized
normally
normally contained
novolak
obtained
oil
oils
organic
organic solvent
parameter
ph
ph range
phenol
phenol normally
phenol-formaldehyde
phenol-formaldehyde resin
phenolic
phenolic compounds
polar
portions
preparing
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process
product
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purification
pyrolysis oil
pyrolysis oils
range
recovery
replaced
resins
shown
solubility
solubility parameter
solutions
solvent
solvent extract
solvent extraction
stage
therefrom
thermosetting
thermosetting resin
thermosetting resins
variety
vinyl
wide
wide variety