process for the production of technical chromfreier and completely chromfreier gelatine and glue, leather and special glass the waste.

• 1. 用于高色度工业废水处理的新型复合絮凝剂的生产方法 [P] . 中国专利： CN1285318A . 2001-02-28
• 2. 用于制备具有低色度和色度稳定性的甲硅烷基化的聚合物的工艺 [P] . 中国专利： CN108137772B . 2021.06.29
• 3. method for production of technical chromfreier and completely chromfreier gelatine and glue [P] . 德国专利： DE000000438459A . 1926-12-18

  机译： 技术铬合金和完全铬合金明胶和胶的生产方法

• 4. A Process for the Manufacture of Glue and Gelatine from Leather and Leather Waste. [P] . 英国专利： GB190222738A . 1903-01-15

  机译： 用皮革和皮革废料制造胶和明胶的方法。

• 5. hurtigafgarvningsmetode for the manufacture of gelatine and glue of leather or leather waste. [P] . DK7588C . 1905-06-13

  机译： 用于制造明胶和皮革或皮革废料的胶水的igatgarfgarvningsmetode。

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