Product Overview

1,3-Butadiene is a highly reactive conjugated diene with two carbon-carbon double bonds separated by a single bond. It is a colorless, flammable gas with a mild aromatic odor and serves as a critical monomer in the production of synthetic rubbers and polymers. As a key petrochemical building block, 1,3-butadiene is primarily derived from steam cracking of hydrocarbons and is essential for manufacturing elastomers with excellent resilience and durability. Its unique chemical structure enables versatile polymerization and copolymerization, making it indispensable in the rubber, plastics, and automotive industries.

Basic Information

CAS No.	106-99-0
UN No.	UN1010 (Butadiene, stabilized)
Molecular Formula	C₄H₆
Hazard Classification	2.1 (Flammable gas), 2.3 (Toxic gas)

Key Attributes & Parameters

Purity	Typically ≥99.5% for polymer-grade applications, with controlled levels of impurities such as vinyl acetylene, acetylenes, and carbonyls.
Physical State	Colorless gas at ambient conditions; usually stored and transported as a liquefied gas under pressure or refrigeration.
Boiling Point	-4.4°C (24.1°F) at atmospheric pressure.
Vapor Density	Heavier than air (~1.87 relative to air).
Polymerization Inhibitor	Typically stabilized with inhibitors such as TBC (tert-butylcatechol) to prevent hazardous spontaneous polymerization during storage and transport.

Features & Advantages

High Reactivity for Polymerization

The conjugated diene structure of 1,3-butadiene allows it to readily undergo addition polymerization and copolymerization, forming long polymer chains with desirable elastomeric properties.

Versatile Monomer for Synthetic Rubbers

It is the primary monomer for producing styrene-butadiene rubber (SBR), polybutadiene rubber (BR), and nitrile rubber (NBR), which collectively account for the majority of global synthetic rubber production.

Excellent Elasticity and Resilience

Polymers derived from 1,3-butadiene exhibit outstanding flexibility, abrasion resistance, and low-temperature performance, making them ideal for dynamic applications.

Compatibility with Other Monomers

It can be copolymerized with styrene, acrylonitrile, and other monomers to tailor material properties for specific uses.

Functional Characteristics

Polymerization Behavior

1,3-Butadiene can polymerize via free-radical, anionic, or coordination mechanisms to form cis-, trans-, or vinyl configurations, influencing the final polymer's properties.

Chemical Reactivity

In addition to polymerization, it participates in Diels-Alder reactions, hydrogenation, and halogenation, serving as a precursor for various chemical intermediates.

Stabilization and Handling

Due to its tendency to form peroxides and polymerize explosively, it must be stored with inhibitors and under controlled conditions (often refrigerated) to ensure safety.

Primary Application Fields

Synthetic Rubber Production

SBR (Styrene-Butadiene Rubber): Used in tires, conveyor belts, and footwear.
BR (Polybutadiene Rubber): Applied in tire treads, golf balls, and impact-resistant plastics.
NBR (Nitrile Rubber): Utilized in fuel hoses, gaskets, and oil-resistant seals.

Plastics and Resins

As a comonomer in ABS (Acrylonitrile Butadiene Styrene) plastics for appliances, automotive parts, and toys.

Chemical Intermediates

Production of hexamethylenediamine (for nylon 6,6), adiponitrile, and sulfolane.

Adhesives and Sealants

Provides flexibility and tack in pressure-sensitive adhesives.

Customer Collaboration Case

A leading tire manufacturer sought to enhance the wet grip and rolling resistance of their premium tire line without compromising durability. They collaborated with our team to optimize the 1,3-butadiene content and microstructure in their SBR formulation. By leveraging our high-purity 1,3-butadiene (≥99.7%) and tailored polymerization technology, we developed a customized SBR with an optimized balance of vinyl and cis-1,4 configurations. This resulted in a 15% improvement in wet traction and a 10% reduction in rolling resistance, contributing to better fuel efficiency and safety. The consistent quality of our 1,3-butadiene ensured batch-to-batch reproducibility, enabling the customer to meet stringent automotive industry standards and strengthen their market position in high-performance tires.

FAQ

Q: What are the common payment methods for chemical product exports? How can the appropriate method be selected?

A: Common methods: T/T wire transfer (advance payment + final payment), L/C letter of credit, D/P payment against documents, Western Union remittance (for small amounts). Selection suggestions: For new customers or large orders, adopt 30% advance payment + 70% final payment (see copy of the bill of lading), which can reduce risks for both parties; for long-term cooperative customers, L/C letter of credit (bank credit guarantee) can be negotiated; for small sample orders, Western Union remittance or PayPal can be used. Our company can recommend the optimal payment plan based on the customer's credit rating and order amount to ensure transaction security.

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