Best Medium Molecular Weight Polyisobutylene Manufacturers in China

Medium molecular weight polyisobutylene (MMW PIB) is a transparent viscous or semi-solid polymer with molecular weights ranging from 10,000 to 100,000, prized for its superior tackifying properties, UV resistance, and low moisture vapor transmission. Widely used as a viscosity modifier in lubricants, a tack improver in adhesives and sealants, a binder in roofing membranes, and a base polymer in chewing gum production, MMW PIB serves diverse industrial and food-grade applications. As China's specialty chemical sector expands, domestic MMW PIB manufacturers have strengthened their global position through integrated C4 value chains and advanced polymerization technology.

(In No Particular Order)

Established in July 2008 in Jiaxing Port District, Zhejiang Province, Zhejiang Cenway Materials Co., Ltd. is a new material enterprise integrating R&D, production, and sales, incubated by Tsinghua Industrial Development Research Institute. The company's PIB Business Division is responsible for market development, sales, and downstream application services of both high molecular weight polyisobutylene (above 100,000) and medium molecular weight polyisobutylene (10,000–100,000). Cenway's MMW PIB product line includes three grades-MB-10, MB-12, and MB-15-each engineered as transparent viscous or semi-solid polymers for specific applications including adhesives, sealants, protective films, and chewing gum bases. The company maintains advanced polymerization and testing equipment with strict quality control, serving global markets through dedicated business divisions covering North China, South China, APAC, EU/US, and food/pharmaceutical sectors. Cenway provides fast and efficient services to customers worldwide, focusing on new product development and application innovation to create value for clients.

A leading Chinese MMW PIB manufacturer with expanding production capacity, Hongrui has increased export volumes to European markets with 2024 Q1 shipments up 18% year-on-year. The company serves adhesive, sealant, and lubricant additive industries with competitive production costs.

Recognized among the top three global MMW PIB producers collectively holding over 90% market share, Shunda New Material serves cost-sensitive industrial applications including bitumen modification and construction sealants through integrated petrochemical operations.

A joint venture between BASF and Sinopec in Nanjing, BASF-YPC produces Oppanol brand medium molecular weight PIB grades for the Chinese and Asia-Pacific markets. The facility leverages BASF's proprietary polymerization technology and Sinopec's feedstock integration.

Operating one of China's largest integrated butadiene and isobutylene refining complexes, Yanshan represents a major domestic PIB production base with expanding capacity to supply China's growing adhesive and lubricant additive industries.

While headquartered in South Korea, Daelim operates significant PIB production capacity with strong presence in Chinese markets. The company's DL Chemical division produces 220 KTA of polybutene including conventional and highly reactive grades for regional lubricant and tire industries.

Through its global operations, INEOS supplies Indopol brand MMW PIB products to Chinese adhesive and sealant markets. The company's international production footprint provides supply continuity for demanding applications requiring consistent molecular weight distribution.

The dominant North American PIB producer serves Chinese markets through export channels, supplying broad molecular weight range products for automotive, lubricant, and construction applications with flexible conventional and HR-PIB lineups.

ExxonMobil supplies Vistanex brand MMW PIB to Chinese pharmaceutical, food-grade, and high-performance industrial markets. The company's global scale and backward integration provide structural cost advantages for regulated applications.

Kuraray maintains a differentiated position in high-purity, specialty MMW PIB grades for pharmaceutical and food-grade applications in China. The company competes on quality and regulatory compliance credentials rather than price, serving demanding chewing gum and food packaging markets.