Direct-from-factory organosilicon agents, specialty copolymers, and hydrocarbon solutions engineered for high performance.
Founded in 2012, Shandong Boctok Chemical Co. has grown to become a cornerstone manufacturer and global distributor of premium organosilicon compounds, performance petroleum resins, and high-purity agrochemical solutions. Operating as a unified marketing, sales, and manufacturing center, we achieved US$280 million in annual sales in 2023, reflecting our rapid scale and international reliability. Through our dedicated Boctok™ brand, we have solidified a premier market position, with specialized logistics, sales structures, and custom formulations designed to serve the highly demanding Russian and CIS industrial landscape, alongside core markets across Europe, Asia, and the Americas.
Our comprehensive chemical portfolio encompasses advanced room-temperature vulcanized (RTV) silicone matrices, methyl vinyl rubbers, and our signature **120 Methyl Phenyl Raw Rubber**. By implementing strict ISO9001 and ISO14001 quality and environmental protocols, Shandong Boctok Chemical Co. delivers exceptional mechanical resilience, extreme low-temperature thresholds, and unmatched radiation resistance parameters demanded by modern industrial engineering departments.
120 Methyl Phenyl Raw Rubber (classified globally within the Polymethylphenylsiloxane or PVMQ family) represents a major advancement over standard dimethyl silicone rubbers (VMQ). By strategically substituting a proportion of the methyl side chains on the siloxane backbone with bulky phenyl groups (typically 5% to 15% mol fraction), the polymer's crystalline structure is significantly disrupted.
This molecular configuration prevents the typical low-temperature packaging and crystallization behavior of silicone elastomers. Consequently, the glass transition temperature ($T_g$) is lowered to an industry-leading -120°C. In addition, the conjugated ring system of the phenyl group acts as an energy-dissipating shield, providing superior resistance to high-energy gamma and electron radiation, while offering remarkable thermal stability under sustained operations up to +250°C to +300°C.
| Property Parameter | 120 Methyl Phenyl Raw Rubber (Boctok Standard) | Standard 110 Methyl Vinyl Rubber | Testing Protocol Reference |
|---|---|---|---|
| Phenyl Mol Content (%) | 5.0% - 15.0% (Customizable) | 0% | NMR Spectroscopy |
| Vinyl Mol Content (%) | 0.1% - 0.3% | 0.05% - 0.2% | Wet Chemistry / FTIR |
| Molecular Weight (Mw) | 500,000 - 750,000 g/mol | 450,000 - 650,000 g/mol | Gel Permeation Chromatography (GPC) |
| Glass Transition Temp (Tg) | -115°C to -120°C | -60°C to -70°C | Differential Scanning Calorimetry (DSC) |
| Radiation Resistance | > 1 x 10^7 Rads (Excellent) | Poor (Becomes brittle rapidly) | ASTM D5262 / ISO 11137 |
Why Tier-1 industrial buyers and Fortune 500 chemical companies select Shandong Boctok Chemical Co. as their primary supply partner.
Global procurement of specialty polymers like 120 Methyl Phenyl Raw Rubber requires balancing supply chain reliability with strict quality compliance. High-performance sealing components used in modern commercial aircraft, deep-sea oil wells, and sub-zero gas pipelines cannot tolerate product variation. At Shandong Boctok Chemical Co., we address these requirements through structural supply chain integration:
We source raw petrochemical compounds directly from state enterprises, including SINOPEC and PetroChina. This direct access protects our clients from market price volatility and ensures consistent base polymer quality.
Our newly built Shouguang plant in the Bohai Industrial Park, supported by a US$65 million investment, features 6 automated DCS (Distributed Control System) production lines. These lines operate alongside safety-instrumented systems (SIS) to ensure process safety and product consistency across an annual capacity of 30,000 tons.
Every batch of raw rubber undergoes rigorous testing, including Mooney viscosity, volatile content, and crosslink density checks. We maintain strict compliance with European REACH registration protocols, RoHS guidelines, and Russian GOST certifications, enabling seamless customs clearance and product integration.
"Boctok’s vertically integrated production keeps quality high and prices stable for global distribution."
Our 120 Methyl Phenyl Raw Rubber provides key performance advantages in critical global industries.
High-altitude flight and deep-space missions expose hardware to rapid temperature cycling and hard vacuum conditions. Our phenyl rubbers resist cracking down to -120°C while maintaining vacuum stability.
Standard elastomers degrade and lose structural integrity under high radiation. The phenyl structures in our raw rubber absorb and dissipate energy, protecting wire coatings and control valves.
Drilling in Arctic climates requires sealing components that can withstand extreme cold and high pressure. Our materials prevent gas containment failures in valves and blowout preventers.
Information Gain Insight: The molecular structure of phenyl-modified silicones is key to their performance. By control-polymerizing the phenyl groups, we prevent polymer crystallization. This allows the rubber to maintain its elasticity in extreme cold rather than freezing, which is critical for demanding high-performance applications.
As industrial requirements push polymers to work in harsher conditions, Shandong Boctok Chemical Co. maintains an active R&D program. Our technical roadmap focuses on three main developments:
Developing new copolymers with phenyl content above 25 mol% to increase radiation resistance, serving as containment seals for next-generation modular reactors (SMR).
Combining phenyl raw rubber with internal lubricating fluids to reduce sliding friction in automotive and dynamic industrial seals.
Researching addition-cure vulcanization catalysts that do not produce volatile byproducts, helping customers meet strict VOC emission standards.
Our manufacturing facilities and support systems are structured to serve demanding industrial markets.
We conduct molecular weight distribution analysis, rheological profiling, and mechanical stress testing on every batch to ensure consistency.
With 6 automated DCS synthesis lines, we can scale production to fulfill large contracts and accommodate custom formulation adjustments.
Our engineering team provides technical assistance for formulation design, compounding parameters, and troubleshooting vulcanization processes.
Located near main ports and transport links, our logistics network provides reliable shipping to Russia, Europe, Asia, and the Americas.
Our materials are utilized across diverse industries, from heavy industrial coatings to consumer products.
Technical details and answers to common engineering questions regarding methyl phenyl rubber applications.
Our complete line of agricultural intermediates, crosslinkers, and specialty silane compounds.
Boctok Chemical