Process for producing alkylene carbonates
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsMasaharu Doya, Takashi Ohkawa, Yutaka Kanbara, Aksushi Okamoto, Kenichi Kimizuka
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Abstract
A process for producing alkylene carbonates which comprises reacting urea and glycols described by the general formula RCH(OH) CH.sub.2 OH; wherein R represents hydrogen or an alkyl group containing 1 to 4 carbons, using a catalyst containing zinc, magnesium, lead or calcium at reduced pressures. The alkylene carbonates are produced with high yield easily using raw materials which are comparatively inexpensive with a mild reaction that does not involve explosive or hazardous materials.
Claims6
A process for producing alkylene carbonates which comprises reacting urea and glycols described by the general formula RCH(OH) CH.sub.2 OH;
- where R represents hydrogen or an alkyl group containing 1 to 4 carbons, using a catalyst containing at least one metal selected from zinc, magnesium, lead and calcium.
A process for producing alkylene carbonates which comprises reacting, at a temperature of 120.degree.-240.degree. C., urea and glycols described by the general formula RCH(OH) Ch.sub.2 OH;
- wherein R represents hydrogen or an alkyl group containing 1 to 4 carbons, at a pressure of 60-600 mm Hg absolute and in the presence of one or more catalysts selected from the group consisting of zinc, magnesium, lead and calcium.
Dependencies are inferred from the claim text.