Discover our primary chemical formulations, organosilicon polymers, and crosslinkers manufactured to precise international standards for diverse engineering requirements.
Low Phenyl Silicone Oil, chemically identified as low-phenylmethylsiloxane copolymers or methylphenyl siloxane fluids with low molar concentration of phenyl substituents (typically between 5% to 15%), represents a pinnacle of specialized fluid technology. The incorporation of a phenyl ring onto the inorganic silicon-oxygen (Si-O-Si) backbone alters the typical helical structure of polydimethylsiloxane (PDMS). This structural distortion lowers the freezing point of the liquid, providing superior low-temperature performance while simultaneously improving oxidation resistance, thermal stability, radiation resistance, and load-carrying capacity.
For engineering teams and global procurement officers in industrial sectors such as aerospace, electrical infrastructure, heavy manufacturing, and lubricants, sourcing these compounds requires selecting an authoritative manufacturer capable of delivering rigorous batch consistency. Global applications demand performance under extreme environments—often reaching down to -70°C and surging up to 250°C.
The synthesis of low phenyl silicone oil requires precise control over the co-hydrolysis and condensation of dichlorodimethysilane and dichloromethylphenylsilane (or dichlorodiphenylsilane). Unlike standard PDMS, which crystallizes or exhibits high viscosity at low temperatures, the phenyl rings in low phenyl silicone oil act as structural disruptors. This prevents the alignment of polymer chains, preserving fluid state and ensuring high damping, lubricating, and dielectric efficiency in cryogenic or high-altitude operations.
Shandong Boctok Chemical Co. was founded in 2012 as a marketing and sales center for Boctok™ domestic and overseas businesses. Through dedicated structural growth, technical innovation, and persistent compliance management, we achieved sales of US$280 million in 2023. The BOCTOK brand specializes in serving the Russian market, as well as maintaining active, high-volume exports to key global industrial centers.
Our first core business of organosilicone covers twelve series of silane coupling agents and crosslinkers, including aminosilane, methacrylate silane, epoxy silane, vinyl silane, mercaptosilane, alkyl silane, ethyl silicate, chlorosilane, silane isocyanates, phenyl silane, ureidosilane, and serosilane.
Boctok also focuses heavily on silicone oil, silicone resin, and silicone rubber. Our chemical portfolio includes high-hydrogen silicone oil, dimethicone, vinyl silicone oil, polyphenylmethyldimethylsiloxane, phenyl silicone oil, silanol silicone oil, OH polymer, alkoxy silicone oil, methyl MQ resin, vinyl VMQ resin, room-temperature vulcanized methyl silicone rubber, 110 methyl vinyl silicone rubber, and 120 methyl phenyl rubber.
China's chemical manufacturing ecosystem provides unique competitive benefits. From upstream raw material integration to regulatory compliance and automated synthesis, Shandong Boctok Chemical stands out as a global leader.
Leveraging reliable and abundant raw materials directly from Chinese petrochemical giants (SINOPEC and PetroChina), we ensure uninterrupted production runs, insulating global buyers from volatile price fluctuations and monomer shortages.
Our plants implement computerized Distributed Control Systems (DCS) and Safety Instrumented Systems (SIS) throughout. This automation ensures micro-dosing precision, heat profile stability, and exceptional batch-to-batch polymer uniformity.
Operating inside state-approved industrial parks like the Bohai Industrial Park in Shouguang, our operations feature dedicated volatile organic compound (VOC) recovery systems and wastewater neutralizers to protect ecosystems.
Beyond advanced organosilicon synthesis, Boctok operates state-of-the-art production lines for high-purity hydrocarbon resins and agrochemical materials, satisfying global industrial demand.
Boctok's Tier II core business is petroleum resins. We have invested heavily in a key hydrocarbon resin manufacturing framework in China, operating three production facilities strategically located in Zibo, Fushun, and Nanjing. With stable access to direct raw materials, our facilities produce high-grade chemical resins used extensively by Fortune 500 companies.
Our resin product list includes:
Boctok is also an established provider in the agrochemical supply chain. We manufacture chemical intermediates and essential raw materials required for the synthesis of modern, high-efficacy crop protection products. Our research and production divisions supply high-quality formulations to agricultural chemical manufacturers worldwide, including:
Shandong Boctok Chemical Co. maintains an unwavering focus on engineering precision, operational safety, and customer-first logistics to foster long-term partnerships.
Every product batch undergoes testing in our laboratories using gas chromatography and mass spectrometry (GC-MS) to guarantee optimal purity, density, and viscosity parameters.
With an annual output of 30,000 tons of silane coupling agents and advanced silicone compounds, we easily fulfill high-volume industrial contracts.
Our multilingual support team is available online 24/7, providing real-time cargo tracking and addressing complex chemical compliance questions.
Our factories in Zibo, Fushun, and Shouguang are situated close to major deep-water ports, streamlining customs and global shipping routes.
Engineered to excel under severe operational constraints, our phenyl silicone fluids serve as high-performance elements across multiple high-tech applications.
In aerospace and naval navigation systems, instruments must withstand high-altitude temperature drops down to -70°C. Low phenyl silicone oils serve as damping fluids for instruments, structural shock absorbers, and torsional dampers. Their stable viscosity prevents damping loss under thermal shock, ensuring reliable readings.
The low dissipation factor and high dielectric strength of phenylmethylsiloxanes make them ideal insulating oils for power transformers, capacitors, and cable accessories. They resist dielectric breakdown and remain stable in contact with ozone and electrical discharges, minimizing grid failure risks.
By blending low phenyl silicone fluids with specialized solid lubricants, manufacturers produce high-performance industrial greases. These formulations exhibit excellent load-carrying capacity, low volatile evaporation losses, and superior compatibility with rubber and plastic seals, preventing cracking and leakage.
Sourcing chemical raw materials requires careful planning. We provide transparent logistical support, regulatory compliance documentation, and clear ordering guidelines.
We operate under ISO9001 quality management system standards. Our products comply with environmental regulations, including EU REACH registration, RoHS standards, and safety declarations. Every bulk shipment is accompanied by a Certificate of Analysis (COA), safety data sheets (SDS) formatted to GHS standards, and complete origin declarations.
By investing US$65 million to expand our plant in the Bohai Industrial Park (Shouguang City, Shandong Province), we have introduced 6 automatic DCS production lines with an annual output of 30,000 tons of silane coupling agents. The safety instrument system (SIS) and modern emission treatments prevent operational delays, ensuring a stable, uninterrupted supply chain.
Low Phenyl Silicone Oil is packaged in specialized steel drums (200kg) or Intermediate Bulk Containers (IBC - 950kg) that are nitrogen-flushed and hermetically sealed to prevent moisture ingress. This safeguards the compound's low-volatility characteristics during shipping.
Our shipping network links directly from Chinese industrial hubs to North America, Europe, South America, Japan, South Korea, Australia, the Middle East, India, Southeast Asia, and Russia. This guarantees reliable transit times and simplifies port handling for global customs clearances.
Gain insight into structural chemistry, stability parameters, and customized processing choices for our phenyl siloxane fluids.
Standard PDMS (dimethicone) starts to crystallize at temperatures below -50°C and has relatively low thermal stability under heavy oxygen exposure. In contrast, Low Phenyl Silicone Oil substitutes a fraction of the methyl groups on the silicon-oxygen chain with bulkier phenyl rings. These rings break the helical structure, preventing low-temperature crystallization. This enables the fluid to operate at temperatures down to -70°C while also increasing the flash point and thermal resistance above 250°C.
Our Distributed Control System (DCS) continuously monitors temperature, pressure, feed rates, and reflux ratios across the polymerization columns. The Safety Instrumented System (SIS) ensures that if any parameters drift outside limits, corrective systems respond automatically. This high level of automated control prevents incomplete hydrolysis, resulting in low polydispersity indices (PDI) and highly consistent viscosity grades.
Yes, our chemical plants can adjust viscosity ranges from 20 cSt up to 5000 cSt by controlling polymer chain lengths during the condensation polymerization stage. We work closely with our partners to supply custom viscosity grades optimized for specific dampening, hydraulic, and sensor-damping applications.
Stored under seal in a cool, dry, and well-ventilated warehouse (below 35°C), low phenyl silicone oils maintain a shelf life of at least 36 months. Moisture ingress is the primary cause of degradation, as it can trigger condensation of remaining silanol groups. Our nitrogen-flushed steel drums protect the oil's purity during long-term storage.
With over 12 years of experience exporting to European, Asian, and Russian markets, our logistics department manages complex regulatory certifications, including REACH compliance and safe transport documentation for chemical materials. We maintain dedicated transport lines to major shipping ports to ensure timely global deliveries.
From consumer personal care formulations to aerospace engineering and electronic casting, our materials support a wide range of industrial applications.
Discover our processing solutions in specialized resin synthesis, industrial mineral processing, and heavy mechanical manufacturing.
Browse our secondary selection of coupling agents, reactive intermediates, and crop protection materials engineered for export markets.
Boctok Chemical
