Phenolic resins; in primary forms

HS v2022 Code: 390940

About phenolic resins; in primary forms

HS code 390940 covers phenolic resins, which are a class of thermosetting polymers widely used in a variety of industrial applications. Phenolic resins are known for their excellent thermal and chemical resistance, as well as their ability to be molded into complex shapes. They play a crucial role in the manufacturing of adhesives, coatings, laminates, and a wide range of composite materials, making them an essential component in many industries, including construction, automotive, and electronics.

Production process

Phenolic resins are typically produced through a condensation reaction between phenol (or a substituted phenol) and formaldehyde. The process involves several key steps, including the initial reaction, followed by polymerization, and finally, the curing or hardening of the resin. The specific production techniques can vary depending on the desired properties of the final product, such as the degree of cross-linking, viscosity, and curing time.

Production inputs

The main inputs required for the production of phenolic resins include phenol, formaldehyde, and various catalysts and additives. Phenol is the primary raw material, and it is often derived from the petrochemical industry. Formaldehyde is another essential component, and it is typically obtained from the oxidation of methanol. Depending on the specific application, other inputs such as fillers, reinforcements, and curing agents may also be used in the production process.

Production outputs

Phenolic resins are used to manufacture a wide range of products, including 390940 Phenolic resins; in primary forms, 391690 Other articles of plastics and articles of other materials of headings 3901 to 3914, n.e.s., and 392010 Other plates, sheets, film, foil and strip, of plastics, non-cellular and not reinforced, laminated, supported or similarly combined with other materials. These resins are particularly valuable in applications where heat, chemical, and fire resistance are required, such as in the production of electrical and electronic components, automotive parts, and construction materials.

Revisions to 390940

Classification codes are adjusted frequently. The code may have been revised or replaced between system versions. The table below shows the history (newest to oldest) of the code 390940. The most recent 1 version of this code (390940) is in the HS v2022 system (this version):

This page shows the most recent version of code 390940.

Family tree for phenolic resins; in primary forms

    graph LR
    A["<a href='/classifications/hs/v2022/39'>39: Plastics and articles thereof</a>"]
A --> B["<a href='/classifications/hs/v2022/3909'>3909: Amino-resins, phenolic resins and polyurethanes, in primary forms</a>"]
B --> C["<a href='/classifications/hs/v2022/390940'>390940: Phenolic resins; in primary forms</a>"]

    B --> D["<a href='/classifications/hs/v2022/390910'>390910: Amino-resins; urea and thiourea resins, in primary forms</a>"]
B --> E["<a href='/classifications/hs/v2022/390920'>390920: Amino-resins; melamine resins, in primary forms</a>"]
B --> F["<a href='/classifications/hs/v2022/390931'>390931: Amino-resins; n.e.c. in heading no. 3909, in primary forms, poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI)</a>"]
B --> G["<a href='/classifications/hs/v2022/390939'>390939: Amino-resins; n.e.c. in heading no. 3909, in primary forms, other than poly(methylene phenyl isocyanate) (Crude MDI, polymeric MDI)</a>"]
B --> H["<a href='/classifications/hs/v2022/390950'>390950: Polyurethanes; in primary forms</a>"]

    

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