Leather deliming agent without nitrogen and boron elements and preparation method thereof

• Main Authors: YU DENGHUA, LIU GUODONG, GUO XIANG, SONG WEI, LI JING
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2021
• Subjects: APPARATUS THEREFOR; CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING; CHEMISTRY; COMPOSITIONS FOR TANNING; HIDES; LEATHER; METALLURGY; PELTS; SKINS

The invention provides a leather deliming agent without nitrogen and boron elements and a preparation method thereof, and relates to the technical field of preparation of leather deliming agents. Theleather deliming agent comprises a binary acid mixture, an acidic salt and alpha-hydroxyl sodium sulfonate, and the binary acid mixture comprises maleic anhydride waste residue; the method for preparing the leather deliming agent from maleic anhydride waste residue turns waste into wealth, is low in cost and has good environmental protection benefits and economic benefits. All the components can be subjected to chemical reaction with lime, the permeability and the pH buffer property are good, the preparation process is simple, and the cost performance is high. 本发明提供了一种无氮和硼元素的皮革脱灰剂及其制备方法，涉及皮革脱灰剂的制备技术领域，包括二元酸混合物、酸性盐和α-羟基磺酸钠，二元酸混合物包括顺酐废渣；本发明利用顺酐废渣制备皮革脱灰剂是变废为宝、且成本低，具有较好的环保效益和经济效益。所有组分都能与石灰发生化学反应，且具有较好的渗透性和pH缓冲性，制备过程简单、性价比较高。