PRODUCTION OF ETHYLENE/VINYL ACETATE COPOLYMER FOR HYDROCARBON FUEL OIL

PURPOSE:To obtain the titled copolymer excellent in pour point depressing effect and low-temperature filtrability, in high yields, by copolymerizing ethylene with vinyl acetate in the presence of a mixed solvent consisting of tert-butyl alcohol and an aliphatic or alicyclic hydrocarbon or an ester....

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KONDOU SUSUMU, AKAGAWA TETSUO
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY NATURAL GAS ORGANIC MACROMOLECULAR COMPOUNDS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled copolymer excellent in pour point depressing effect and low-temperature filtrability, in high yields, by copolymerizing ethylene with vinyl acetate in the presence of a mixed solvent consisting of tert-butyl alcohol and an aliphatic or alicyclic hydrocarbon or an ester. CONSTITUTION:An ethylene/vinyl acetate copolymer is obtained by charging an autoclave with a mixed solvent consisting of 0-60wt% aliphatic hydrocarbon, alicyclic hydrocarbon or a fatty acid ester of an aliphatic alcohol (e.g., n- heptane, cyclopentane, methyl acetate) and 100-40wt% tert-butyl alcohol and vinyl acetate, pressurizing the autoclave with ethylene and copolymerizing the reaction mixture at 130-180 deg.C. The produced copolymer is added to an oil such as light naphtha, heavy naphtha or crude oil, in an amount of 50-3,000ppm to prevent the viscosity increase of oil with a termperature decrease and the deposition of paraffin in oil.