Lithium-Catalyzed Butadiene Rubber Crumb
Crumbs of solution BR from lithium initiation, for wire insulation compounds. HTS 4002.20.00.00 for primary crumb form of synthetic butadiene rubber.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If from rubber goods breakdown
Reclaimed crumbs from used rubber goods go to 4003, not primary synthetic.
If saturated polymer
Non-vulcanizable butadiene polymers classify as plastics in Chapter 39.
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Import Tips & Compliance
• Molecular weight distribution cert confirms synthetic rubber per vulcanization test
• Ensure crumbs not surface-worked into shapes violating note 8 primary form rules
Related Products under HTS 4002.20.00.00
Styrene-Butadiene Rubber (SBR) Latex
A liquid dispersion of butadiene rubber copolymerized with styrene, used in adhesives and carpet backings. Classified under HTS 4002.20.00.00 as synthetic butadiene rubber (BR) in primary form (latex), meeting vulcanization and elasticity criteria without prohibited compounding agents.
Polybutadiene Rubber (BR) Granules
Granular form of cis-1,4-polybutadiene rubber, a primary form for tire manufacturing and synthetic golf balls. Falls under HTS 4002.20.00.00 as butadiene rubber in bulk granules, uncompounded and retaining raw material character.
High Cis-Polybutadiene Rubber Bale
Baled high-cis butadiene rubber for conveyor belts and footwear soles, in primary bulk form. HTS 4002.20.00.00 applies to this unvulcanized synthetic BR meeting elongation/recovery tests without prohibited additives.
Neodymium-Catalyzed Polybutadiene Rubber
High-microstructure BR produced via neodymium catalyst, baled for golf balls and tires. HTS 4002.20.00.00 covers this synthetic butadiene rubber in primary bale form, uncompounded.
Butadiene Rubber Powder
Fine powder form of BR for rubber compounding and asphalt modification. Primary form under HTS 4002.20.00.00 as synthetic rubber powder, meeting Chapter 40 purity requirements.
Cis-1,4-Polybutadiene Rubber Latex
Prevulcanized latex of cis-butadiene rubber for dipping and coatings. Classifies in HTS 4002.20.00.00 as BR primary liquid form, with permitted prevulcanization per notes.