Phenolic compounds containing/neutral fractions extract and products derived therefrom from fractionated fast-pyrolysis oils
A process is described 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.
- DOE Contract Number:
- AC02-83CH10093
- Assignee:
- Midwest Research Inst. Ventures, Inc., Kansas City, MO (United States)
- Patent Number(s):
- US 5223601; A
- Application Number:
- PPN: US 7-647020
- OSTI ID:
- 6224697
- Resource Relation:
- Patent File Date: 29 Jan 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ADHESIVES
SYNTHESIS
MOLDING MATERIALS
PYROLYTIC OILS
FRACTIONATION
RESINS
CELLULOSE
CHEMICAL COMPOSITION
FORMALDEHYDE
LIGNIN
ORGANIC SOLVENTS
PH VALUE
PHENOLS
PYROLYSIS
SOLVENT EXTRACTION
ALDEHYDES
AROMATICS
CARBOHYDRATES
CHEMICAL REACTIONS
DECOMPOSITION
EXTRACTION
FUELS
HYDROXY COMPOUNDS
MATERIALS
OILS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
POLYSACCHARIDES
PYROLYSIS PRODUCTS
SACCHARIDES
SEPARATION PROCESSES
SOLVENTS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
102000* - Synthetic Fuels- Products & By-Products- (1990-)