Plastic / Rubber Additives

plastic rubber additives

Acetyl Tributyl Citrate (ATBC)

CAS: 77-90-7

Acetyl Tributyl Citrate (ATBC) is a citrate ester plasticizer recognized as one of the safest non-phthalate options available, with broad FDA and EU approvals for food-contact and medical applications. It delivers excellent low-temperature flexibility and low volatility, making it ideal for flexible packaging and sensitive consumer goods. ATBC is fully biodegradable and compatible with PVC and biopolymers.

plastic rubber additives

Acrylic Impact Modifier

Acrylic Impact Modifiers based on core-shell architecture provide outstanding toughening performance for rigid PVC without sacrificing weatherability or clarity. The rubbery acrylic core absorbs impact energy while the hard shell ensures compatibility and dispersion within the PVC matrix. They are the preferred choice for outdoor applications where UV resistance is a priority.

plastic rubber additives

Acrylic Processing Aid

Acrylic Processing Aid is a high-molecular-weight polymethyl methacrylate-based additive that significantly improves the fusion, melt strength, and processing behavior of rigid PVC compounds. It accelerates gelation and homogenizes the melt, resulting in improved surface gloss, dimensional stability, and reduced melt fracture. Used at 1–3 phr, it is essential for high-output extrusion, calendering, and injection molding of rigid PVC.

plastic rubber additives

Anti-Blocking Agent

CAS: 7631-86-9

Anti-blocking agents are fine inorganic or organic particulate additives incorporated into plastic films to prevent adjacent film layers from sticking together during winding, storage, and processing. They work by creating microscopic surface roughness that reduces the contact area between film surfaces. Common types include amorphous silica, talc, kaolin, and synthetic silica.

plastic rubber additives

Antioxidant 1076 (Irganox 1076)

CAS: 2082-79-3

Antioxidant 1076 is a hindered phenolic primary antioxidant (octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) providing excellent long-term thermal oxidative stability for polyolefins, styrenics, and engineering polymers. It is particularly effective in applications requiring food-contact compliance and low volatility during high-temperature processing. Antioxidant 1076 is often combined with phosphite co-antioxidants for synergistic protection.

plastic rubber additives

Antioxidant 168 (Phosphite Co-Antioxidant)

CAS: 31570-04-4

Antioxidant 168 (tris(2,4-di-tert-butylphenyl)phosphite) is a high-performance phosphite processing stabilizer that hydroperoxide decomposer, preventing discoloration and degradation of polyolefins and engineering polymers during melt processing. It works synergistically with hindered phenolic antioxidants to provide comprehensive protection against thermal and oxidative degradation. Antioxidant 168 is one of the most widely used co-antioxidants in the plastics industry.

plastic rubber additives

Antistatic Agent for Plastics

CAS: 4292-10-8

Antistatic agents for plastics are surface-active additives that dissipate static electricity build-up on plastic surfaces by forming a thin, hygroscopic layer that conducts charge away. They are classified as internal (compounded into the resin) or external (applied to the surface). Internal types such as glycerol monostearate and ethoxylated amines migrate continuously to the surface, providing durable antistatic protection.

plastic rubber additives

Azodicarbonamide (ADC) Foaming Agent

CAS: 123-77-3

Azodicarbonamide (ADC), commonly known as AC blowing agent, is the most widely used chemical foaming agent in the plastics and rubber industry. It decomposes at 195–210°C to release nitrogen, carbon dioxide, and carbon monoxide gases, creating a uniform closed-cell foam structure. Activators such as zinc oxide can lower the decomposition temperature to 150–160°C for use in lower-temperature polymers.

plastic rubber additives

Barium Zinc Stabilizer

Barium Zinc Stabilizer is a liquid or powder PVC heat stabilizer offering outstanding long-term thermal stability, excellent initial whiteness, and superior processing performance. It is commonly used in flexible PVC applications where a balance of cost-effectiveness and performance is required. Ba-Zn systems are valued for their lubricity, compatibility with various plasticizers, and good color stability during extended processing.

plastic rubber additives

CPE Impact Modifier (Chlorinated Polyethylene)

CAS: 68442-33-1

Chlorinated Polyethylene (CPE) Impact Modifier is a cost-effective elastomeric toughener for rigid PVC, particularly used in pipe, fittings, and profiles requiring good chemical and weather resistance. CPE-135A grade with 35% chlorine content is the standard modifier for rigid PVC, providing excellent low-temperature impact strength and oil resistance. It is widely used in both rigid and flexible PVC applications.

plastic rubber additives

Calcium Stearate

CAS: 1592-23-0

Calcium Stearate is a versatile metallic soap used as an internal and external lubricant, acid scavenger, and release agent in PVC and polyolefin processing. In PVC formulations it acts as a co-stabilizer alongside zinc stearate, helping to prevent early discoloration by neutralizing HCl. It also improves mold release and reduces friction between polymer chains during extrusion and calendering.

plastic rubber additives

Calcium Zinc Stabilizer

Calcium Zinc Stabilizer is a heavy-metal-free PVC heat stabilizer system combining calcium and zinc salts with co-stabilizers and lubricants, offering an environmentally safe alternative to lead and cadmium-based systems. It provides excellent long-term thermal stability and good initial coloring performance for rigid and flexible PVC formulations. Ca-Zn stabilizers are widely used in food-contact, medical, and children's product applications.

plastic rubber additives

Chloroprene Rubber (CR) Additive Package

Chloroprene Rubber Additive Packages are tailored combinations of vulcanizing agents, accelerators, antioxidants, and processing aids specifically formulated for CR (neoprene) compounds. Typical systems include magnesium oxide and zinc oxide as acid acceptors and crosslinkers, combined with thiourea or ETU accelerators. These packages ensure optimal vulcanization, heat resistance, and chemical resistance of CR compounds.

plastic rubber additives

Dicumyl Peroxide (DCP) Cross-linking Agent

CAS: 80-43-3

Dicumyl peroxide (DCP) is a di-functional organic peroxide widely used as a cross-linking agent for polyethylene (XLPE), silicone rubber, EPDM, EVA, and natural rubber. Upon thermal decomposition at 120–180°C, it generates free radicals that create covalent C-C cross-links between polymer chains, significantly improving heat resistance, mechanical strength, and chemical resistance.

plastic rubber additives

Diisononyl Phthalate (DINP)

CAS: 28553-12-0

Diisononyl Phthalate (DINP) is a high-molecular-weight phthalate plasticizer offering superior permanence and low volatility compared to DOP. It is widely used in applications requiring long-term flexibility retention and reduced migration. DINP meets stringent regulatory requirements for many consumer and industrial PVC applications.

plastic rubber additives

Dioctyl Phthalate (DOP)

CAS: 117-81-7

Dioctyl Phthalate (DOP) is a general-purpose primary plasticizer widely used in PVC processing to impart flexibility, durability, and low-temperature performance. It offers excellent compatibility with PVC resin and provides a good balance of electrical insulation and mechanical properties. DOP is the benchmark plasticizer for flexible PVC applications worldwide.

plastic rubber additives

Dioctyl Terephthalate (DOTP)

CAS: 6422-86-2

Dioctyl Terephthalate (DOTP) is a non-phthalate plasticizer derived from terephthalic acid, offering an environmentally friendly alternative to traditional phthalate plasticizers. It provides excellent heat stability, low volatility, and outstanding electrical properties. DOTP is increasingly preferred for applications subject to regulatory restrictions on conventional phthalates.

plastic rubber additives

Epoxidized Soybean Oil (ESBO)

CAS: 8013-07-8

Epoxidized Soybean Oil (ESBO) is a bio-derived secondary plasticizer and PVC heat stabilizer that functions synergistically with calcium-zinc and barium-zinc stabilizer systems. It effectively scavenges hydrogen chloride released during PVC degradation, prolonging thermal stability and extending service life. ESBO is widely accepted in food-contact PVC applications including gaskets and closure liners.

plastic rubber additives

Fluoroelastomer Processing Aid

Fluoroelastomer Processing Aids are fluoropolymer-based additives that eliminate melt fracture and sharkskin defects in polyolefin film and pipe extrusion by providing dynamic lubrication at the die wall interface. Used at very low loadings (50–1000 ppm), they dramatically improve extrudate surface quality, allow higher output rates, and reduce die pressure. They are particularly valuable for LLDPE, HDPE, and metallocene polyethylene processing.

plastic rubber additives

HALS 622 (Hindered Amine Light Stabilizer)

CAS: 65447-77-0

HALS 622 (poly[(6-morpholino-s-triazin-2,4-diyl)[2,2,6,6-tetramethyl-4-piperidyl)imino]hexamethylene]) is a high-molecular-weight oligomeric HALS providing outstanding long-term light stabilization for polyolefins, polyurethanes, and other polymers exposed to outdoor environments. Its low volatility and excellent permanence make it the preferred light stabilizer for thick-section agricultural film, geomembranes, and automotive parts. HALS 622 is effective even in the presence of acid-generating flame retardants.

plastic rubber additives

MBS Impact Modifier (Methyl Methacrylate-Butadiene-Styrene)

CAS: 25053-09-2

MBS Impact Modifier is a core-shell terpolymer based on a polybutadiene rubber core with a methyl methacrylate-styrene shell, providing excellent toughening for transparent PVC applications. Its refractive index is closely matched to PVC, making it ideal for clear rigid PVC bottles, thermoformed sheets, and blister packaging where both toughness and optical clarity are required. MBS is not suitable for outdoor UV-exposed applications.

plastic rubber additives

Nucleating Agent

CAS: 85209-91-2

Nucleating agents are additives that increase the rate of crystallization in semi-crystalline polymers such as polypropylene and polyethylene by providing heterogeneous nucleation sites. This results in smaller, more uniform crystal structures that improve stiffness, clarity, heat distortion temperature, and dimensional stability. Organic sorbitol-based clarifiers also serve as transparency-enhancing nucleating agents.

plastic rubber additives

Optical Brightening Agent (OBA)

CAS: 4404-43-7

Optical brightening agents (OBAs) are fluorescent dyes that absorb ultraviolet light and re-emit it as visible blue light, compensating for the yellowish tint of plastics and making them appear whiter and brighter. They are widely used in polyolefins, PVC, ABS, and engineering plastics. OBAs for plastics must be thermally stable at processing temperatures typically above 200°C.

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

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.

plastic rubber additives

Zinc Stearate

CAS: 557-05-1

Zinc Stearate is a white metallic soap powder serving as a primary external lubricant, mold-release agent, and PVC co-stabilizer in plastic and rubber processing. In PVC stabilizer systems, it reacts with the HCl generated during thermal degradation, providing initial color stability. It is also a key lubricant and release agent in rubber vulcanization and thermoplastic compounding.