Formula of promoter for binding cobalt salt, and preparation method

Abstract

This invention relates to a method for preparing cobalt salt adherence accelerator, which can make cobalt salt product form a network molecular structure, thus improving the crosslinking acceleration performance of the product in rubber products. The cobalt salt adherence accelerator is composed of: 2-octanol solvent 30-50 parts, Co(OH)2 31.54-33.2 parts, decanoic acid 56-65 parts, mixed valeric acid 10-15 parts, and mixed acetic acid and propionic acid 5-8 parts. The method comprises: adding the raw materials into a reaction kettle, stirring, heating to 80-85 deg.C, reacting for 2 h, heating to remove water and solvent, and distilling at 170-190 deg.C and below 0.05 MPa to remove the trace solvent and unreacted materials.

Description

Technical field: [0001] The invention belongs to chemical production raw materials, in particular to a formulation of a cobalt salt adhesion promoter, a processing aid used in the production of rubber products, and a preparation method thereof. Background technique: [0002] At present, the import of cobalt salt adhesion promoters used in the domestic tire rubber processing industry is increasing continuously. Although a few domestic chemical companies also produce such products, due to technical difficulties, unreasonable composition and backward technology, the products produced The quality of the products is not stable and is rarely recognized by users. The cobalt salts produced by some domestic enterprises are generally based on two-acid or three-acid cobalt salts. The two-acid cobalt salts are made of capric acid and propionic acid, and the tri-acid cobalt acid and acetic acid as raw materials, the cobalt salt products produced by the two-acid method have a high soften...

AI Technical Summary

Problems solved by technology

[0002] At present, the import of cobalt salt adhesion promoters used in the domestic tire rubber processing industry is increasing continuously. Although a few domestic chemical companies also produce such products, due to technical difficulties, unreasonable composition and backward technology, the produced The quality of the products is unstable and rarely recognized by users

The cobalt salts produced by some domestic enterprises are generally based on two-acid or three-acid cobalt salts. The two-acid cobalt salts are made of capric acid and propionic acid, and the tri-acid cobalt acid and acetic acid as raw materials, the cobalt salt products produced by the two-acid method have a high softening point, generally above 110°C, and even reach 130-140°C. Although the softening point of the tri-acid cobalt salt can reach 80-105°C, the softening point The point is unstable, which affects storage and use