Hydrogenated Rosin Resins
In the industry, it is widely recognized that crude gum rosin has two major drawbacks. Firstly, its abietic acid resin contains conjugated double bond structures, making it prone to oxidation, This resulting in a darker resin color that ultimately affects its applications. Secondly, it tends to crystallize, and the melted rosin, after crystallization, has a high melting point, which makes it difficult to saponify. There is a tendency for recrystallization in many solvents, a characteristic that can lead to flocculent or fine particle precipitation in adhesive applications, making the adhesive less transparent. In soldering applications, the crystallization of rosin can cause local polymerization after soldering, reducing transparency and making it difficult to clean the solder flux.
Through hydrogenation processes, after a series of catalytic, distillation, and filtration procedures, a hydrogenated gum rosin resin with a reduced tendency to crystallize and a light color (through further processes, it can even close to colorless) can be preparated. Additionally, this resin has low ash content, strong weather resistance, and high stability.
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