Polyisoprene Trans

Trans-Polyisoprene (TPI) Commodity Market Dynamics Intelligence

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I. Price Quotation Data for the Past Month (Mid-October to Mid-November 2026)

| Date | Supplier/Source | Quotation (CNY/kg) | Specification/Purity | Remarks |
|------|-----------------|--------------------|----------------------|---------|
| 2026-10-19 | Wuhan Jiangxin Biotechnology | 88 | 25kg packaging / 99% | Enterprise standard grade, shipped from Wuhan, Hubei |
| 2026-10-20 | Qiaofeng Chemical (Market Average) | 200 | 25kg / Cardboard drum / 99% | Pharmaceutical grade, white crystals |
| 2026-10-21 | Rongcan (Wuhan Qingshan Heyuan) | 190 | 20kg or 1kg / 99% | Industrial grade / Medical grade |
| 2026-10-28 | Wuhan Smack Biotechnology | 9 (Minimum order quantity ≥1kg) | 100g-200kg / 98% | Small packaging scientific research grade quotation |
| 2026-11-04 | SunSirs Benchmark Price | — | — | Released commodity quotation dynamics |
| 2026-11-06 | SunSirs Benchmark Price | — | — | Released commodity quotation dynamics |
| 2026-11-09 | SunSirs Benchmark Price | — | — | Released commodity quotation dynamics |
| 2026-11-11 | SunSirs Benchmark Price | — | — | Released commodity quotation dynamics |

**Price Range Characteristics**: TPI market quotations have shown significant divergence over the past month. Industrial/enterprise standard grade products are concentrated in the 88–200 CNY/kg range, while scientific research grade small packaging products exhibit a wide quotation span (9–1,700 CNY/bottle) due to specification differences. SunSirs has continuously released TPI quotation dynamics, indicating increased market attention to this commodity.

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II. Supply-Side Dynamics

1. **Production Capacity Landscape**: Domestic Trans-Polyisoprene (TPI) is a niche specialty rubber variety. Production enterprises are primarily fine chemical companies located in the Central China region (Wuhan, Hubei), including Jiangxin Biotech, Smack, and Penglei Biotech. Production capacity is limited, and large-scale industrialization units have not yet been established.
2. **Raw Material End**: Regarding the supply of upstream isoprene monomer, units at Xinjiang Tianli and Fushun Yikesi experienced shutdowns for maintenance in 2025, alleviating supply pressure. In 2026, the market price of polymerization-grade isoprene has fluctuated around 15,000 CNY/ton, providing cost support for TPI.
3. **New Capacity**: According to industry research released in November 2026, the total production capacity of Polyisoprene Rubber (including cis-IR and trans-TPI) in China is expected to witness a new peak in supply, with a compound annual growth rate (CAGR) of 8%–10%. However, as a sub-category, the release pace of new TPI capacity is relatively slow.

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III. Demand-Side Dynamics

1. **Downstream Application Structure**:
- **Medical Field**: Due to its thermoplastic molding and warm-water softening properties, TPI is used for medical external fixation braces and orthopedic splints, replacing traditional plaster, with steady demand growth.
- **Tire Industry**: TPI is used in blends with natural rubber to improve wear resistance and flex fatigue resistance, but its proportion is lower than that of cis-IR.
- **Functional Materials**: Emerging applications continue to expand, including shape memory elastomers, golf ball covers, and composite material modification additives (blended into polyurethane/epoxy systems).
- **Scientific Research Market**: There is continuous demand from universities and R&D platforms for TPI as a model substrate for studying crystallization kinetics and shape memory mechanisms.

2. **Demand Trends**: In 2026, the recovery in domestic automobile production and sales, along with the normalization of medical consumables demand, has driven a steady increase in the apparent consumption of TPI. However, the overall market size remains small, characterizing it as a niche market.

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IV. Market Structure and Competitive Characteristics

| Dimension | Current Status |
|-----------|----------------|
| Product Homogenization | Domestic TPI products are mainly general-purpose grade; high-end customized products (specific Mooney viscosity, molecular weight distribution) are scarce |
| Import Dependence | High-end TPI still partially relies on imports, with Russia and Japan as the main sources |
| Regional Concentration | Supply is concentrated in the Wuhan, Hubei region; consumption covers the Yangtze River Delta, Pearl River Delta, and exports to East Asia/Southeast Asia |
| Substitute Competition | Natural rubber and butadiene rubber have clear price advantages in the general rubber field; TPI is difficult to completely replace in high-end niche segments |

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V. Analytical Judgments

1. **Price Trend Judgment**: TPI quotations have shown a trend of stabilizing at high levels (88–200 CNY/kg) over the past month. SunSirs' continuous tracking and release of quotation dynamics reflect increased market trading activity. In the short term, the raw material isoprene price oscillates around 15,000 CNY/ton, providing support for TPI costs. However, due to the small market size and weak liquidity of TPI, prices are more influenced by negotiation between supply and demand, resulting in limited fluctuation amplitude.
2. **Supply-Demand Landscape**: In 2026, the overall Chinese PIP (including TPI) market is in a state of tight balance. However, as a sub-variety, TPI's supply side is dominated by small and medium-sized fine chemical enterprises with insufficient elasticity; while the demand side in medical and functional material sectors shows high certainty of growth, the total volume is limited.
3. **Structural Contradictions**: Low-end general-purpose TPI has sufficient supply and intensifying competition; high-end medical grade and customized TPI faces insufficient supply, high import dependence, and significant price differentials.

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VI. Forecast (Next 1–3 Months)

| Forecast Item | Judgment |
|---------------|----------|
| Price Range | Industrial-grade TPI is expected to fluctuate in the 80–200 CNY/kg range; medical grade/high-end customized grades are expected to rise slightly to 200–250 CNY/kg |
| Supply Side | No large-scale new units are expected to come online in the short term, so supply increments will be limited; if raw material isoprene prices rise, the TPI cost center will shift upward |
| Demand Side | Winter peak season for medical consumables demand + year-end automobile sales push; Q4 demand side is expected to show marginal improvement |
| Risk Warnings | ① Tightening of isoprene supply due to maintenance of C5 separation units; ② Production restrictions on small and medium chemical enterprises due to environmental protection policies; ③ Impact of significant fluctuations in natural rubber prices on substitution effects |
| Operational Recommendations | Downstream users can build safety stocks at lower price levels within the current range, focusing on import substitution opportunities for high-end customized products; traders should monitor SunSirs benchmark price trends as a settlement reference |