About HS Code 390791
This HS code covers unsaturated polyesters in primary forms (resins, pellets) that are not specifically classified elsewhere within heading 3907. These resins are characterized by the presence of carbon-carbon double bonds, enabling them to be cross-linked (cured) into thermoset plastics. They are extensively used as binders in fiberglass reinforced plastics (FRP), for manufacturing composite materials, boat hulls, automotive parts, pipes, tanks, and cultured marble products. Major importers are countries with strong manufacturing bases in construction, automotive, marine, and wind energy sectors, such as China, Germany, and the USA. Exporters include chemical companies from Europe, North America, and Asia. Key aspects of trade involve the demand for lightweight and durable materials, the growth of composite industries, and the specific formulation requirements for various applications, such as orthophthalic, isophthalic, or dicyclopentadiene (DCPD) resins.
Products Under This Code
Orthophthalic unsaturated polyester resin, Isophthalic unsaturated polyester resin, DCPD unsaturated polyester resin, Vinyl ester resin, Gel coat resins, SMC/BMC resins, Fire retardant unsaturated polyester resin
Real World Examples
Ashland Derakane, Reichhold Polylite, AOC Aliancys, Scott Bader Crystic, BASF Palatal
Common Misclassification
These are often confused with saturated polyesters (390799) if the "unsaturated" characteristic is not clearly identified, which is critical for their thermosetting properties. They might also be mistaken for epoxy resins (390730) or other thermosetting resins.
Products Classified Under 3907.91
Industry
This code belongs to the Plastics & Rubber industry.
Trade Overview
Top importers include China, Germany, and the USA, while major exporters are Germany, the USA, and South Korea.
Frequently Asked Questions
What is HS code 390791?
HS code 390791 covers: Polyesters; n.e.c. in heading no. 3907, unsaturated, in primary forms. This HS code covers unsaturated polyesters in primary forms (resins, pellets) that are not specifically classified elsewhere within heading 3907. These resins are characterized by the presence of carbon-carbon double bonds, enabling them to be cross-linked (cured) into thermoset plastics. They are extensively used as binders in fiberglass reinforced plastics (FRP), for manufacturing composite materials, boat hulls, automotive parts, pipes, tanks, and cultured marble products. Major importers are countries with strong manufacturing bases in construction, automotive, marine, and wind energy sectors, such as China, Germany, and the USA. Exporters include chemical companies from Europe, North America, and Asia. Key aspects of trade involve the demand for lightweight and durable materials, the growth of composite industries, and the specific formulation requirements for various applications, such as orthophthalic, isophthalic, or dicyclopentadiene (DCPD) resins.
What products fall under HS code 390791?
Orthophthalic unsaturated polyester resin, Isophthalic unsaturated polyester resin, DCPD unsaturated polyester resin, Vinyl ester resin, Gel coat resins, SMC/BMC resins, Fire retardant unsaturated polyester resin
What are common misclassifications for HS code 390791?
These are often confused with saturated polyesters (390799) if the "unsaturated" characteristic is not clearly identified, which is critical for their thermosetting properties. They might also be mistaken for epoxy resins (390730) or other thermosetting resins.
How is HS code 390791 structured?
HS code 390791 is a 6-digit subheading under the Harmonized System. The first 2 digits (39) identify the chapter, digits 3-4 (07) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.