Polybutene-1 Price Trend and Forecast 2026-2027

Market Overview

China held the priciest polybutene-1 of the markets we track through the first half of the year 2026 (H1 2026). Q2 closed at a value of USD 4.18/KG against Q1's USD 4.10/KG, up 2.0%. Urbanization-driven pipe installations kept import demand firm. Freight and import-logistics costs added their own pull on top of that. The global average moved less, from the USD 3.81/KG to a value of USD 3.86/KG, a gain of just a 1.3% percent. For the second half of 2026 (H2 2026), a range of an amount of USD 3.85 to 4.10/KG looks likely worldwide. Tight supply from a small producer base and resilient plumbing and packaging demand are what's holding it up.

Polybutene-1, PB-1 for short, comes from the stereospecific polymerization of butene-1, a four-carbon olefin drawn off the refinery and steam-cracker streams, using a Ziegler-Natta catalyst system. Only a handful of producers run the PB-1 lines worldwide. That keeps the supply base narrow compared with the mainstream polyolefins. Hot and cold water pipe systems for plumbing and heating are the dominant application, prized for the resin's creep resistance and long service life under pressure. Hot-melt adhesives and sealants make up a smaller but steady slice of the demand. Flexible packaging films use PB-1 for its easy-peel, heat-sealable properties. It also works as a blend modifier, lifting the impact and creep resistance of the standard polypropylene and polyethylene.

Three factors account for most of the price movement.

• Butene-1 feedstock costs.
• How much of the limited global capacity is actually running.
• The pace of pipe-system and packaging demand.

Polybutene-1 Price Forecast for 2026

The second half of 2026 (H2 2026) opened firm almost everywhere. China's urbanization-linked pipe demand kept the import buying steady. Japan and Germany saw a consistent hot-melt adhesive and packaging offtake. The United States held a dependable pace across both the plumbing and blend-modifier applications. Feedstock costs firmed alongside all of it, as the refinery and cracker C4 streams tightened a touch while the alkylation and other butene-1 users competed for the same barrels.

A couple of factors bear watching. A spike in the butene-1 feedstock costs, or a producer outage given the narrow supply base, could push the prices past the top of the range. A slowdown in the construction-linked pipe demand, or faster PP/PE substitution in packaging, could pull the market below the floor instead.

For the Quarter Ending June 2026

Polybutene-1 Prices Q2 2026:

• China: USD 4.180/KG
• Japan: USD 3.700/KG
• Germany: USD 3.920/KG
• United States: USD 3.770/KG

Polybutene-1 Prices in China

China's PB-1 pipe demand kept climbing through Q2. Urbanization-linked infrastructure projects absorbed a steady import volume. The gain came to a value of 2.0%, from USD 4.10/KG to USD 4.18/KG.

Why did the price of Polybutene-1 change in Q2 2026 in China?

• Urban infrastructure and plumbing retrofit projects kept import orders flowing.
• Freight and import-logistics costs firmed further.
• Butene-1 feedstock costs edged higher, closing the quarter at USD 4.18/KG.

Polybutene-1 Prices in Japan

Japan's steady hot-melt adhesive and packaging-film demand carried the quarter. The prices firmed by 1.1% to a value of USD 3.70/KG.

Why did the price of Polybutene-1 change in Q2 2026 in Japan?

• Hot-melt adhesive and flexible-packaging buyers kept orders level.
• Domestic PB-1 output ran at a dependable rate.
• Butene-1 feedstock costs firmed modestly, settling the quarter at USD 3.70/KG.

Polybutene-1 Prices in Germany

Germany gained by 1.3% to a value of USD 3.92/KG. The plumbing and heating retrofit demand stayed dependable, and the feedstock costs firmed alongside it.

Why did the price of Polybutene-1 change in Q2 2026 in Germany?

• Retrofit plumbing and heating demand held steady across the quarter.
• Butene-1 feedstock costs firmed on tighter refinery C4 streams.
• Quarter closed at USD 3.92/KG.

Polybutene-1 Prices in the United States

The US PB-1 firmed by 1.1% to a value of USD 3.77/KG. The plumbing demand stayed steady, and the blend-modifier offtake into polypropylene compounding added further support.

Why did the price of Polybutene-1 change in Q2 2026 in United States?

• Plumbing and heating pipe demand stayed dependable.
• Blend-modifier offtake into PP and PE compounding firmed.
• Quarter closed at USD 3.77/KG.

For the Quarter Ending March 2026

Polybutene-1 Prices Q1 2026:

• China: USD 4.100/KG
• Japan: USD 3.660/KG
• Germany: USD 3.870/KG
• United States: USD 3.730/KG

Polybutene-1 Prices in China

China opened the year 2026 with a gain of 1.2% to a value of USD 4.10/KG. The urbanization-linked pipe demand stayed firm through the post-holiday period.

Why did the price of Polybutene-1 change in Q1 2026 in China?

• Post-holiday construction activity kept pipe demand firm.
• Import freight costs stayed on the high side.
• Market settled at USD 4.10/KG.

Polybutene-1 Prices in Japan

Japan firmed a modest 0.8% to a value of USD 3.66/KG. The hot-melt adhesive demand stayed steady through the quarter.

Why did the price of Polybutene-1 change in Q1 2026 in Japan?

• Hot-melt adhesive and packaging demand held its ground.
• Domestic PB-1 output ran at a steady rate.
• Quarter closed at USD 3.66/KG.

Polybutene-1 Prices in Germany

Germany gained by 1.3% to a value of USD 3.87/KG. The plumbing retrofit demand stayed steady, and the feedstock costs firmed alongside it.

Why did the price of Polybutene-1 change in Q1 2026 in Germany?

• Plumbing and heating retrofit demand stayed dependable.
• Butene-1 feedstock costs firmed modestly.
• Market settled at USD 3.87/KG.

Polybutene-1 Prices in the United States

The US PB-1 rose by 0.8% to a value of USD 3.73/KG. The plumbing and blend-modifier demand both held steady through the quarter.

Why did the price of Polybutene-1 change in Q1 2026 in United States?

• Plumbing demand held at a dependable pace.
• Blend-modifier offtake into polyolefin compounding stayed firm.
• Quarter closed at USD 3.73/KG.

Quarterly Polybutene-1 Price Trends

The climb has been slow and steady, with no dramatic swings. The global average moved from the USD 3.65/KG in Q1 2025 to USD 3.86/KG by Q2 2026, a net gain of about 5.8 percent. Every single quarter posted a gain. That reflects the narrow producer base and the consistently firm feedstock costs behind PB-1, more than any single demand swing does. China led the move throughout, its urbanization-linked pipe demand pulling harder on the import volumes than any other market.

What was Polybutene-1 Price in 2025?

The year 2025 was a steadily firming year for polybutene-1 almost everywhere. The global average opened near a value of USD 3.65/KG in Q1, climbed through every quarter, and closed Q4 at USD 3.77/KG, a full-year gain of 3.3 percent. China led the move, rising from USD 3.85/KG to USD 4.05/KG, up 5.2 percent, on the urbanization-linked pipe demand. Germany and the United States posted steadier, smaller gains of 3.2 percent and 2.8 percent respectively. Japan moved the least, up just 2.3 percent. A narrow global producer base and firming butene-1 feedstock costs were the two constants behind the year.

Polybutene-1 Prices in China in 2025

China opened the year 2025 at a value of USD 3.85/KG and closed the year at USD 4.05/KG, a gain of 5.2 percent, the strongest of the four markets. The urbanization-linked pipe-system installations kept the import demand climbing in every quarter. The freight and import-logistics costs added a further layer of support on top of that. The net direction for the year was firmly higher, with the construction-linked pipe demand as the dominant driver.

Polybutene-1 Prices in Japan in 2025

Japan opened the year 2025 at a value of USD 3.55/KG and closed at USD 3.63/KG, a gain of 2.3 percent, the mildest move of the four markets. The hot-melt adhesive and flexible-packaging demand stayed steady, without dramatic swings. The domestic output ran at a dependable rate throughout as well. The net direction for the year was modestly higher, with the steady adhesive and packaging demand as the main driver.

Polybutene-1 Prices in Germany in 2025

Germany opened the year 2025 at a value of USD 3.70/KG and closed at USD 3.82/KG, a gain of 3.2 percent. The plumbing and heating retrofit demand held firm across the year. The butene-1 feedstock costs firmed steadily alongside it. The net direction for the year was solidly higher, with the retrofit demand and feedstock costs both supporting the move.

Polybutene-1 Prices in the United States in 2025

The United States opened the year 2025 at a value of USD 3.60/KG and finished at USD 3.70/KG, a gain of 2.8 percent. The plumbing demand stayed dependable throughout. The blend-modifier offtake into polypropylene and polyethylene compounding added a steady secondary pull. The net direction for the year was moderately higher, with the broad-based demand across pipe and blend-modifier applications.

How We Can Help

Expert Market Research: Your Source for Real-Time Polybutene-1 Price Intelligence

Expert Market Research keeps a continuous watch on the polybutene-1 pricing across every major producing and consuming region. A price alone says very little. Our analysts dig into what actually drives it: the butene-1 feedstock economics, the operating rates of a narrow global producer base, and the buying cycles of plumbing, adhesive, and packaging converters. The forecasts draw on the feedstock trends, the capacity utilization, and the trade-flow shifts across all four reporting regions. Contact Expert Market Research today for the polybutene-1 pricing data, a bespoke market analysis, and a strategic procurement advisory.