Synthesis of thermosetting polymers from the by-products of coal conversion processes

Journal Article · Sat Dec 15 04:00:00 EST 1979 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1979.070241201· OSTI ID:5384059

Giori, C; Eisenberg, W; Yamauchi, T; Shelfo, S; Solomon, I

The use of coal conversion by-products as raw materials in the synthesis of thermosetting polyesters has been investigated. Heavy tar residues were oxidized by gaseous oxygen in an alkaline medium, yielding a complex mixture of benzenecarboxylic acids and smaller amounts of aliphatic carboxylic acids. The mixture was polymerized by condensation with tetraethylene glycol bottoms, a byproduct of the synthesis of ethylene glycol. The resultant polyesters were cured by reacting them with epoxy resins in the presence of basic catalysts. Molded sheets and laminates were fabricated and tested. Tensile strength was found to increase with increasing curing time and with increasing concentration of epoxy crosslinking agent. Glass-reinforced composites fabricated by the autoclave process showed an increase in flexural and shear strength with decreasing autoclave pressure.

• Research Organization: IIT Research Inst., Chicago, IL
• OSTI ID: 5384059
• Journal Information: J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 24:12; ISSN JAPNA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010500* -- Coal
Lignite
& Peat-- Products & By-Products
36 MATERIALS SCIENCE
360401 -- Polymers & Plastics-- Preparation & Fabrication-- (-1987)
ALCOHOLS
AROMATICS
CARBOXYLIC ACIDS
CHEMICAL PREPARATION
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL TAR
CROSS-LINKING
CURING
DATA
DATA FORMS
EPOXIDES
ESTERS
EXPERIMENTAL DATA
FLEXURAL STRENGTH
GLYCOLS
HIGH TEMPERATURE
HYDROXY COMPOUNDS
INFORMATION
ISOLATED VALUES
MECHANICAL PROPERTIES
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
OTHER ORGANIC COMPOUNDS
OXIDATION
POLYESTERS
POLYMERIZATION
POLYMERS
SHEAR PROPERTIES
SHEETS
SYNTHESIS
TAR
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TIME DEPENDENCE
YIELDS