摘要
概述了近二年来国内外聚氨酯胶粘剂的技术研究开发和应用进展,重点是水分散液型、反应热熔型和无溶剂液体反应型聚氨酯胶粘剂。结合国内情况提出初步看法和建议。
At present, the existing production capacity for methionine and L - lysine can not yet meet the current demands in China, so 20, 000 - 30, 000 tons of them must be imported from abroad respectively each year. Therefore the development and production of amino acid will be imperative under such circumstances in the days to come in China. But both the development and production projects of methionine and L - lysine belong to Hi -tech, it is necessary for production enterprises to have enough funds and technologies needed to guarantee the completion.
出处
《精细与专用化学品》
CAS
1999年第6期19-21,1,共3页
Fine and Specialty Chemicals
