Shanghai Kastar Chemical Co.,Ltd. founded in 2006, delivers integrated specialty chemical solutions for coatings, adhesives, surface treatment and chemical fibers. Equipped with a 3,000m² tech center, we focus on silane adhesion technology and offer full-chain customized support. With ten domestic offices and Southeast Asian subsidiaries, we provide fast response service. As premium distributor for Milliken and Dow, we welcome industrial cooperation under our philosophy: “Small victories depend on wisdom; great victories depend on virtue.”
Categories: Raw Materials of Stone
Product Name: Sibelco Micro-Fillers & Minerals:High-purity silica flour, quartz sand, cristobalite, and nepheline syenite.
Optimized Particle Packing: Custom particle distribution minimizes oil absorption, allowing higher filler loadings without increasing viscosity—directly reducing expensive UPR resin usage. High Purity & Crystal Structure: Cristobalite and refined quartz offer superior refractive index matching and whiteness, delivering optical depth, high transparency, and realistic marble texture while enhancing abrasion and scratch resistance.
Product Name: United Initiators (UI)（ Organic Peroxides）: Benzene-free initiator TBPIN-HA-M1, engineered stone initiator TBPB-HA-M3, and bio-based low-toxicity polymer-bound cobalt POLCOB®
Benzene-Free Compliance: TBPIN-HA-M1 completely eliminates benzene formation during thermal curing, enabling manufacturers to pass stringent TOC / VDA 277 testing for high-end export markets.Exotherm Control: Smooths out the peak exothermic profile during thermal pressing, preventing internal cracking and warpage in thick slabs to maximize production yield.
Product Name: Borchers Catalysts & Additives:Controlled-release cobalt 21% Cobalt Hydroxy Ten-Cem®, potassium synergistic agent 15% Potassium Hex-Cem®, and BOC cobalt-free catalysis system.
Eradicating Gel Time Drift: Cobalt Hydroxy Ten-Cem® utilizes a unique hydroxy-cobalt chemistry that resists adsorption by fumed silica, maintaining consistent gel times over prolonged storage and reducing off-spec production.Color Reduction & Whiteness Boosting: Replacing 50%–75% of cobalt with 15% Potassium Hex-Cem® substantially diminishes cobalt-induced discoloration, yielding purer whites and brighter undertones in quartz slabs.Zero Heavy Metal Compliance: The BOC technology offers a complete cobalt-free path to navigate impending heavy metal restrictions.
Product Name: CCA / EPS（OptiColor® RC UPE Specialty UPE Colorants）:OptiColor® RC UPE 100% solids unsaturated polyester (UPE) resin-carrier colorants
Chemical Crosslinking & Zero VOC: Solvent- and plasticizer-free; the reactive UPE carrier co-crosslinks directly into the host resin matrix during thermal curing. Zero drop in Barcol hardness or flexural strength, eliminating void formation.Pattern Stability: Ultrafine-ground pigments encased in reactive UPE resin deliver superior dispersion. They resist bleeding, migration, and yellowing under high temperature and pressure, cleanly defining intricate vein designs and aggregate contrast.
