1.Polynionic celluloses were preparated by alkalify and etherify of refining cotton.The degree of replacement of the polynionic cellulosesis was high.The radicals of replacement were distributed evenly.

1.采用精制棉经、醚得到高取代度且取代基均匀分布的聚离子纤维素产品。

2.This paper introduces the light gaso line etherify technology,brings fo rward the project of building the light gasoline etherify device on th e catalyst cracking cell in the refin ery plant.

2.介绍轻汽油醚技术,提炼油厂催裂单元建设轻汽油醚装置的方案。