The molecular weight and particle size distribution of the latex are relatively uniform, oil resistance, solvent resistance, acid and alkali resistance, and it can be cross-linked with sulfur and metal oxides, and its stability is better than that of natural latex. After the nitrile latex is modified by introducing carboxyl groups to make Carboxylic nitrile latex, its bonding strength and mechanical properties are improved. Carboxylic nitrile latex needs to be neutralized when used, and the neutralization degree is generally >90%. It is used in non-woven adhesives, impregnated products, latex paper processing and oil-resistant products.