Styrene-Butadiene Rubber (SBR) Latex
SBR latex is a water-based dispersion of styrene-butadiene copolymer, used in adhesives, paper coatings, and carpet backings. It falls under HTS 4002.19.00 as a synthetic rubber in primary liquid form, meeting the vulcanization and elasticity criteria of chapter note 2 without prohibited compounding agents. This classification applies to prevulcanized or unvulcanized dispersions suitable for further processing.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If butadiene content below 50% or different monomer ratio
Shifts to other synthetic rubbers like NBR or polybutadiene if not meeting strict SBR definition under chapter note 2(a).
If heavily plasticized or contains non-rubber polymers
Polymers of styrene not qualifying as vulcanizable rubber per chapter note 2 fall into Chapter 39 plastics.
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Import Tips & Compliance
• Verify latex concentration and styrene-butadiene ratio via lab testing to confirm synthetic rubber status; ensure no vulcanizing agents beyond permitted additives per chapter note 5
• Provide manufacturer specs showing compliance with elasticity tests; watch for misclassification as compounded mixtures
Related Products under HTS 4002.19.00
Carboxylated Styrene-Butadiene Rubber (XSBR) Dispersion
XSBR is an SBR variant with carboxylic acid groups for improved adhesion, supplied as aqueous paste for tire cord dipping and foam production. Classified in HTS 4002.19.00 as it retains synthetic rubber character in primary paste form without disallowed fillers or extenders. Essential for applications needing bonding enhancement.
SBR Crumb Rubber (Hot Polymerized)
Hot SBR crumbs are granular primary forms from high-temperature emulsion polymerization, ideal for tire treads and conveyor belts. HTS 4002.19.00 covers these bulk forms as they qualify as synthetic rubber per chapter notes, uncompounded except for allowed stabilizers. Provides balanced abrasion resistance.
Cold Polymerized SBR Granules
Cold SBR granules offer higher molecular weight for superior tire performance, supplied in bulk powder/granule form. Under HTS 4002.19.00 as primary synthetic rubber granules meeting elasticity recovery tests, free of vulcanizing agents. Preferred for premium automotive applications.
XSBR Powder for Adhesives
Spray-dried XSBR powder from latex, used in pressure-sensitive adhesives and textile coatings. HTS 4002.19.00 applies to this primary powder form of carboxylated synthetic rubber, preserving raw material character. Enhances tack and cohesion.
SBR Bale Rubber (Oil Extended)
Oil-extended SBR bales contain mineral oil up to 50 phr, in rectangular block form for footwear soles. Permitted under HTS 4002.19.00 per chapter note 5(a)(iii) as primary form retaining rubber character. Improves processing fluidity.
High Vinyl SBR Solution
High-vinyl content SBR in organic solvent solution, for specialized sealants and modifiers. HTS 4002.19.00 includes such solutions as primary forms if vulcanizable per note 2(a), without compounding prohibitions. Offers better low-temperature flexibility.