plastic rubber additives

Organic Phosphite PVC Co-Stabilizer

CAS: 31570-04-4

Organic Phosphite Co-Stabilizers are essential components in PVC stabilizer packages, functioning as hydroperoxide decomposers and HCl scavengers to extend thermal stability. They work synergistically with metal soap stabilizers, improving color retention during processing and long-term weathering. Commonly used phosphites include diphenyl isodecyl phosphite and trisnonylphenyl phosphite.

plastic rubber additives

Organotin Stabilizer

Organotin Stabilizers are high-performance PVC heat stabilizers based on methyltin, butyltin, or octyltin compounds, delivering superior thermal stability and excellent transparency for demanding rigid PVC applications. They are particularly effective in clear PVC bottles, rigid pipe, and profiles where outstanding initial color and long-term stability are critical. Certain octyltin grades are approved for food-contact rigid PVC applications.

plastic rubber additives

Oxidized Polyethylene Wax

CAS: 68441-17-8

Oxidized Polyethylene Wax is a polar PE wax with enhanced compatibility with polar polymers, pigments, and fillers compared to standard PE wax. It functions as an internal and external lubricant, dispersing agent, and surface modifier in PVC, polyolefin, and masterbatch processing. The oxidation introduces carboxyl and hydroxyl groups that improve pigment dispersion, anti-blocking, and surface slip.

plastic rubber additives

Paraffin Wax (Plastic Grade)

CAS: 8002-74-2

Paraffin Wax for plastic processing is a refined petroleum-derived wax used as an external lubricant and mold-release agent in PVC, rubber, and polyolefin compounds. It reduces friction at the metal surface during extrusion and calendering, improving surface gloss and reducing die build-up. Plastic-grade paraffin wax is available in various melting point grades to suit different processing temperatures.

plastic rubber additives

Phosphate Ester Flame Retardant Plasticizer

CAS: 78-51-3

Phosphate Ester Flame Retardant Plasticizers (e.g., TCP, TBEP, TDCPP) combine plasticization and flame retardancy in a single additive, reducing the need for separate flame retardant systems in PVC and polyurethane. They function by releasing phosphoric acid and forming a char layer that limits oxygen access during combustion. These products are widely used in flexible PVC wire insulation, flooring, and foam applications requiring fire safety.

plastic rubber additives

Polyisobutylene (PIB) High Molecular Weight Rubber Grade

CAS: 9003-27-4

High molecular weight polyisobutylene (PIB, Mv 1–2 million) is a rubbery, tacky elastomer used as the primary component or processing aid in tire innertubes, tubeless tire innerliners, and butyl rubber blends. It provides excellent air impermeability (10× lower gas permeability than natural rubber), outstanding water and chemical resistance, and high electrical insulation properties. PIB rubber grade is compatible with SBR and NR blends for co-vulcanization.

plastic rubber additives

Polyol Ester Plasticizer

Polyol Ester Plasticizers are synthesized from polyols such as trimethylolpropane or pentaerythritol esterified with fatty acids, offering excellent low-volatility and high-temperature stability compared to phthalate plasticizers. They provide superior heat and oxidation resistance, making them the preferred choice for demanding applications such as automotive under-hood PVC and high-temperature wire insulation. Polyol esters are compatible with PVC, PU, and rubber.

plastic rubber additives

Precipitated Silica (Rubber Filler)

CAS: 112926-00-8

Precipitated Silica is a high-performance reinforcing filler for rubber, particularly used in green tire technology to reduce rolling resistance while maintaining wet traction. When used with a silane coupling agent (e.g., Si69), it forms strong silica-polymer bonds that improve tensile strength, tear resistance, and abrasion resistance. Silica-reinforced compounds offer the best balance of performance for passenger tire treads.

plastic rubber additives

Rubber Accelerator CBS

CAS: 95-33-0

Accelerator CBS (N-cyclohexyl-2-benzothiazolesulfenamide) is a primary sulfenamide accelerator widely used in tire and industrial rubber vulcanization. It provides delayed action with a safe scorch time followed by a fast cure rate, making it ideal for complex molded goods. CBS is the most commonly used sulfenamide accelerator and is often combined with secondary accelerators such as TMTD for improved crosslink density.

plastic rubber additives

Rubber Accelerator MBTS

CAS: 120-78-5

Accelerator MBTS (2,2'-dibenzothiazyldisulfide) is a thiazole-type primary accelerator providing moderate cure rate with good scorch safety for natural and synthetic rubber. It is widely used alone or as a secondary accelerator in combination with sulfenamides and guanidines to achieve optimal vulcanization characteristics. MBTS is particularly valued in NR, SBR, and NBR compounds for its predictable, controllable cure behavior.

plastic rubber additives

Rubber Accelerator TMTD

CAS: 137-26-8

Accelerator TMTD (tetramethylthiuram disulfide) is a thiuram-type ultra-fast accelerator that functions both as a secondary accelerator and as a sulfur donor in sulfur-free vulcanization systems. It provides fast cure rates and excellent heat aging resistance due to the formation of monosulfidic crosslinks. TMTD is commonly used in combination with CBS or MBTS to enhance crosslink density and reduce reversion.

plastic rubber additives

Rubber Antioxidant 6PPD

CAS: 793-24-8

Antioxidant 6PPD (N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine) is the most widely used p-phenylenediamine antidegradant in rubber, providing outstanding protection against ozone cracking, flex cracking, heat aging, and oxidation. It is standard in tire compounds, conveyor belts, and engineering rubber goods. 6PPD migrates to the rubber surface to react with ozone before it can attack the polymer backbone.

plastic rubber additives

Rubber Antioxidant IPPD

CAS: 101-72-4

Antioxidant IPPD (N-isopropyl-N'-phenyl-p-phenylenediamine) is a p-phenylenediamine antidegradant offering excellent protection against ozone attack, oxidation, and heat aging in natural and synthetic rubber. It provides faster surface migration than 6PPD, making it especially effective for static ozone protection. IPPD is frequently used in combination with 6PPD and TMQ for balanced antidegradant packages.

plastic rubber additives

Rubber Antioxidant TMQ (RD)

CAS: 26780-96-1

Antioxidant TMQ (polymerized 2,2,4-trimethyl-1,2-dihydroquinoline) is a classic quinoline-type antioxidant providing excellent protection against thermal oxidation and aging in natural and synthetic rubber. It is particularly effective for long-term heat aging resistance and complements the ozone protection offered by PPD-type antidegradants. TMQ is a staple in tire, belt, and general rubber goods formulations worldwide.

plastic rubber additives

Rubber Peptizer

CAS: 2492-26-4

Rubber Peptizers are chemical additives that accelerate the mechanical breakdown of natural rubber and some synthetic rubbers during mastication, reducing mixing time and energy consumption. The most common peptizer, Peptizer 420 (dibenzamidodiphenyl disulfide), cleaves polymer chains at radical sites created during mastication, rapidly lowering Mooney viscosity to the target processing level. Peptizers enable more consistent and efficient rubber processing.

plastic rubber additives

Rubber Processing Oil

Rubber Processing Oils are petroleum-derived or synthetic extender and softener oils used to reduce compound viscosity, improve filler dispersion, and lower hardness in natural and synthetic rubber. Available in aromatic, naphthenic, and paraffinic grades; TDAE and MES grades comply with PAH restrictions for tire applications. Processing oils improve processability, tack, and flexibility while reducing compound costs.

plastic rubber additives

Silane Coupling Agent Si69 (TESPT)

CAS: 40372-72-3

Silane Si69 (bis(triethoxysilylpropyl)tetrasulfide, TESPT) is the benchmark bifunctional silane coupling agent for silica-filled rubber compounds, particularly green tire treads. It chemically bonds precipitated silica to the rubber polymer matrix, dramatically improving reinforcement, reducing hysteresis, and lowering rolling resistance. Si69 also acts as a sulfur donor during vulcanization, contributing additional crosslinks.

plastic rubber additives

Slip Agent for Plastics

CAS: 301-02-0

Slip agents are fatty acid amide-based additives that migrate to the surface of plastic films to reduce the coefficient of friction (COF), enabling smooth film movement over processing equipment and packaging machinery. Erucamide and oleamide are the two most widely used types, differing in migration speed and long-term stability. They are essential for high-speed packaging lines.

plastic rubber additives

Stearic Acid (Plastic & Rubber Lubricant)

CAS: 57-11-4

Stearic Acid is one of the most widely used fatty acid lubricants in plastic and rubber processing, functioning as an internal lubricant, dispersing agent, and activator for zinc oxide in rubber vulcanization. In PVC, it acts as an internal lubricant to reduce melt viscosity and improve flow. In rubber, stearic acid combined with zinc oxide forms the zinc stearate activator that accelerates vulcanization.

plastic rubber additives

Sulfur (Rubber Vulcanizing Agent)

CAS: 7704-34-9

Sulfur is the foundational vulcanizing agent for natural and synthetic diene rubbers, forming polysulfidic crosslinks that provide elasticity, strength, and durability. Insoluble sulfur grades prevent sulfur blooming in uncured compounds and are preferred for tire ply and belt applications. Rubber-grade sulfur is available as powder, granules, or oil-treated forms for improved dispersion and dust control.

plastic rubber additives

Tributyl Citrate (TBC)

CAS: 77-94-1

Tributyl Citrate (TBC) is a bio-based, non-toxic plasticizer derived from citric acid, offering excellent safety for food-contact, medical, and children's applications. It provides good solvating power for PVC and other polymers while meeting the most stringent regulatory requirements. TBC is widely used as a phthalate-free alternative in sensitive end-use markets.

plastic rubber additives

Trimellitate Plasticizer (TOTM)

CAS: 3319-31-1

Trimellitate Plasticizer TOTM (trioctyl trimellitate) is a high-molecular-weight, low-volatility plasticizer offering excellent thermal stability and permanence for demanding PVC applications. It is the standard plasticizer for 105°C and 125°C rated PVC wire and cable insulation where long-term heat resistance and minimal weight loss are critical. TOTM also provides outstanding extraction resistance in contact with oils and fuels.

plastic rubber additives

UV Absorber 327

CAS: 3864-99-1

UV Absorber 327 (2-(2-hydroxy-3,5-di-tert-butylphenyl)-5-chlorobenzotriazole) is a high-performance benzotriazole UV absorber providing excellent protection for polyolefins, PVC, and engineering plastics against UV-induced degradation. Its high absorption in the 300–385 nm range and excellent thermal stability make it suitable for high-temperature processing. UV-327 is widely used in combination with HALS for comprehensive weathering protection.

plastic rubber additives

UV Absorber 328

CAS: 25973-55-1

UV Absorber 328 (2-(2-hydroxy-3,5-di-tert-amylphenyl)benzotriazole) is a benzotriazole UV stabilizer with excellent compatibility in a broad range of polymers and coatings. It efficiently absorbs UV radiation in the 300–380 nm range, protecting substrates from photodegradation, yellowing, and loss of mechanical properties. UV-328 is suitable for thin-film applications due to its good solubility in common plasticizers and solvents.