Abstract:

The structure difference of seedlac originated at home and abroad was introduced in detail in this paper, as well as the present manufacture process of the series downstream products of seedalc were also carried out, such as lac wax, lac dye, aleuritic acid and bleached shellac. Moreover, the trend of seedlac products development and design involved in the modification, the mechanism of bleaching, the technique of bleached shellac dechlorination, and novel area usage of seedlac etc., were demonstrated in the article. In a summary the suggestion and orientation of seedlac process were put forward.

Key words: seedlac, aleuritic acid, lac dye, bleached shellac, process technology