Maruzen Petrochemical Company, Limited

Nisso Maruzen Chemical Co., Ltd.

Toshiyuki Fukudome

Tomo Oikawa

Tsuyoshi Matsumoto

Satoshi Kakuta

Tomonori Hakozaki

Hideki Ohmori

Hidenobu Oda

Masaaki Tsuchida

A process for producing an N-vinyllactam by reacting a lactam with acetylene in the presence of a particular catalyst (an alkali metal alcoholate between an alicyclic alcohol and an alkali metal) in a nonaqueous system at an acetylene partial pressure of 0 to 10 kg/cm.sup.2 .multidot.G. In the above process, the vinylation of lactam with acetylene is conducted at a low acetylene partial pressure in one step while the formation of by-product is kept minimum, whereby a high conversion and a high selectivity of lactam can be achieved.

Process for production of N-vinyllactam

The present invention relates to an isolation process of 2-chloroethylvinyl ether from a thermal decomposition product of 1,1-di(2-chloroethoxy)ethane, and comprises the azeotropic distillation of 2-chloroethyl vinyl ether and 2-chloroethanol from the product, the reaction of the 2-chloroethanol in the azeptrope with the 2-chloroethyl vinyl ether to 1-1-di(2-chloroethoxy)ethane without the separation from the product, and the purification of 2-chloroethyl vinyl ether by the rectification of the above reaction mixture.

Isolation process of 2-chloroethyl vinyl ether

Growing community of inventors

Ichihara, Japan

Toshiyuki Fukudome