Advancing High-Performance Bio-Based Elastomers with Rianlon's Antioxidant Solutions

As sustainability continues to reshape the materials industry, bio-based elastomers are gaining increasing attention as an important alternative to conventional petroleum-based materials. Applications ranging from consumer goods and footwear to automotive and industrial products are driving demand for elastomers that combine renewable content with reliable long-term performance.

However, bio-based elastomers often face unique challenges during processing and service life, including thermal degradation, oxidation, discoloration, and property loss. Effective stabilization solutions therefore play a critical role in maintaining product quality, extending service life, and supporting commercial adoption.

Drawing on decades of expertise in polymer stabilization, Rianlon offers a comprehensive portfolio of antioxidants, light stabilizers, and customized U-pack® solutions designed to meet the specific requirements of bio-based elastomer systems. These solutions help manufacturers improve processing stability, enhance long-term durability, and achieve more consistent product performance.

Antioxidant Solutions Tailored for Bio-based Elastomers

Rianlon's product portfolio covers primary antioxidants, secondary antioxidants, and customized liquid antioxidant blends, providing flexible stabilization solutions for a wide range of bio-based elastomers, including bio-based itaconate rubbers and biodegradable polyester elastomers.

Solutions for Emulsion-Polymerized Bio-based Synthetic Rubbers

For emulsion-polymerized bio-based synthetic rubbers, such as styrene-butadiene rubber (SBR) and bio-based itaconate rubber, as well as latex post-treatment processes, Rianlon offers a range of U-pack® emulsion antioxidant solutions, including U-pack® B7026D, U-pack® B7032D, U-pack® B1520D, and U-pack® B7615D.

This product series is supplied in emulsion form, offering advantages such as ease of incorporation, uniform dispersion, and excellent compatibility with polymer matrices. It effectively protects rubber materials against thermo-oxidative degradation during production, storage, and high-temperature processing.

Among the portfolio, U-pack® B1520D and U-pack® B7026D are two recommended solutions with the following key characteristics:

Solutions for Solution-Polymerized Bio-Based Synthetic Rubber

In addition to emulsion products, Rianlon offers a comprehensive portfolio of antioxidant solutions for solution-polymerized bio-based elastomers, such as polybutadiene rubber (BR), styrene-butadiene-styrene (SBS), and related materials. These include RIANOX® 1076, RIANOX® 168, RIANOX® 1135R, RIANOX® 1520, U-pack® B7092, and U-pack® B7067.

Among them, RIANOX® 1520（Sulfur-Containing Hindered Phenolic Antioxidant） and RIANOX® 1076（Conventional Hindered Phenolic Antioxidant） are two high-performance single-component antioxidant solutions.

RIANOX® 1520 is a multifunctional liquid hindered phenolic antioxidant offering several advantages:

1.Contains both phenolic hydroxyl groups and sulfur-containing functional groups, providing dual-action anti-aging performance

2.Light color, high active content, and low impurity levels

3.Low-viscosity liquid (80–90 mPa·s at 20°C), enabling convenient transportation, storage, and handling

Used on its own, RIANOX® 1520 can simultaneously improve both processing stability and long-term thermal stability. It is widely used in rubber and elastomers, plastics, adhesives, lubricants, and other polymer materials, with particularly outstanding performance in rubber and elastomer applications.

RIANOX® 1076 is a widely used primary hindered phenolic antioxidant suitable for a broad range of polymer materials, including commodity plastics, engineering plastics, rubber, and elastomers.

Key benefits include:

1.Excellent compatibility with most polymers

2.Outstanding thermal stability and antioxidant efficiency

3.Low volatility, good dispersibility, and low migration tendency

4.Significant synergistic effects when used in combination with phosphite secondary antioxidants

From single-component antioxidants to customized blends, and from emulsion-based systems to solution-based processes, Rianlon provides comprehensive anti-aging solutions covering the entire processing chain of bio-based elastomers. These solutions help address critical challenges such as thermo-oxidative degradation resistance and long-term service durability. With a continuously expanding portfolio of antioxidants and light stabilizers, together with ongoing innovation in anti-aging technologies, Rianlon remains committed to its mission as a “Guardian of Green Materials.”

Looking ahead, Rianlon will continue to advance anti-aging technologies and collaborate closely with partners across the value chain, helping bio-based elastomers evolve from being merely manufacturable to becoming more durable, more sustainable, and better suited for the future.