Hydroxy Silicone Oil Market Heats Up: Zemei新材料Doubles Capacity as Medical-Grade Demand Surges

ZHIJIANG, China — The global hydroxy silicone oil market is entering a new phase of expansion, driven by robust demand from the silicone rubber, personal care, and medical device industries. Amid this backdrop, Chinese specialty chemical manufacturer Zemei New Materials is making a decisive move to capture market share.

According to company sources, Zemei New Materials recorded sales of 3,730 tons of organosilicon products in the first two months of 2026, generating RMB 43.9 million in revenue. The company is on track to achieve its full-year output target of RMB 300 million, fueled by strong order books that extend through April.

Most notably, the company’s annual 16,000-ton organosilicon new materials renovation and expansion project is scheduled to come onstream within the year. Once operational, Zemei’s production capacity will double, significantly enhancing its product portfolio and competitive positioning. The company’s product line includes three major series—hydrogen-containing silicone oil and its derivatives, specialty silicone oils, silanes, and silicone resins—totaling 16 products that serve industries ranging from construction and daily chemicals to semiconductor chips and new energy vehicles.

What is Hydroxy Silicone Oil?

Hydroxy silicone oil, also known as silanol-terminated polydimethylsiloxane, is a linear polymer featuring a siloxane backbone with methyl side chains and hydroxyl end groups. This unique molecular structure makes it an indispensable additive in silicone rubber processing, where it functions as a structure control agent. It effectively manages the interaction between rubber compounds and silica fillers, improving processing characteristics and extending shelf life.

Beyond silicone rubber, hydroxy silicone oil finds applications in textile treatment, leather finishing, paper processing, and personal care formulations. The material’s versatility has made it a staple across multiple industrial sectors.

Global Market Dynamics

The hydroxy silicone oil market is witnessing accelerated growth, supported by expanding downstream applications. Key end-use segments include:

• Industrial: Textile treatment, leather finishing, release agents

• Automotive: High-performance seals, vibration-damping components

• Medical: Biocompatible devices, tubing, and pharmaceutical applications

Major global players in the hydroxy silicone oil space include Elkem, Shin-Etsu Chemical, SiSiB Silicones, Supreme Silicones, and Zhejiang Sucon Silicon. These industry leaders are increasingly focused on developing high-purity, low-volatility grades to meet stringent medical and electronic application requirements.

Looking Ahead

Industry analysts note that while China dominates global silicone monomer production, the country still relies on imports for certain high-end hydroxy silicone oil grades. Domestic players like Zemei, Suzhou Betely, and Changzhou Juyou are investing heavily in capacity expansion and R&D to close this gap.

As sustainability becomes a global priority, manufacturers are also pivoting toward low-VOC, environmentally friendly formulations. The push for “green chemistry” is expected to drive innovation in bio-based and renewable-sourced silicone materials, creating new growth opportunities for forward-looking players in the hydroxy silicone oil market.