What are the raw materials for polyamide curing agent 3115 and what are their respective proportions?
Polyamide curing agent 3115 is typically synthesized from a dimer of vegetable oleic acid and ethylene amine. But the specific proportion of raw materials is usually a technical secret of the enterprise and is generally not fully disclosed.

According to the general synthesis principles and related research of some polyamide curing agents, the raw materials and general situation involved are as follows:
-* * Dimer acid compounds * *: such as dimer acids obtained by mixing one or more of soybean oil fatty acids, cottonseed oil fatty acids, rapeseed oil fatty acids, tall oil fatty acids, etc. in any proportion and polymerizing. In the synthesis of polyamide curing agents, dimer acid compounds generally account for a large proportion, possibly around 50% -70% (by weight).
-Amine compounds: Common ones include ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, etc. They are generally used as raw materials for reacting with dimer acids, and form polyamide structures through condensation reactions between amine groups and carboxyl groups of dimer acids. Its proportion may be around 30% -50% by weight.

Different manufacturers may make appropriate adjustments to raw materials based on product performance requirements, resulting in differences in the proportion of raw materials.