Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics: > Anti-oxidizing preparations and other compound stabilizers for rubber or plastics: > Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 3812.31.00.00
TMQ Rubber Antioxidant 2,2,4-Trimethyl-1,2-Dihydroquinoline Oligomers
This is a specific mixture of oligomers based on 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ), used as an anti-oxidizing preparation for rubber products. It protects rubber from oxidative degradation during processing and service life, classified under HTS 3812.31.00.00 due to its exact chemical composition as mixtures of TMQ oligomers for rubber stabilization.
TMQ-8 Rubber Aging Preventer Oligomers
TMQ-8 is an industrial mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers applied in automotive hoses and seals for oxidation protection. It fits HTS 3812.31.00.00 exactly as specified for these rubber anti-oxidizing preparations.
Vulkanox HS Rubber Stabilizer TMQ
Vulkanox HS is a commercial-grade mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers designed for tire and rubber compounding. It provides long-term heat and oxidation resistance, directly matching HTS 3812.31.00.00 for TMQ-based anti-oxidants used in rubber production.
RD-TMQ Oligomer Mixture for Conveyor Belts
RD-TMQ is a polymerized oligomer mixture of 2,2,4-trimethyl-1,2-dihydroquinoline for protecting conveyor belt rubber from flex cracking and aging. Classified precisely under 3812.31.00.00 as it consists solely of TMQ oligomers functioning as rubber stabilizers.
Polymerized TMQ Antioxidant for Tires (Grade 224)
Grade 224 polymerized TMQ consists of high-molecular-weight oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline for tire carcass compounds. Its classification under HTS 3812.31.00.00 is based on the statutory definition for these specific rubber stabilizer mixtures.
Sanitized TMQ Rubber Stabilizer for Medical Tubing
This purified TMQ oligomer mixture is used in pharmaceutical-grade rubber tubing to prevent oxidative failure. It qualifies for HTS 3812.31.00.00 as mixtures of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers serving as rubber anti-oxidants.