Polymer Agents

A comprehensive portfolio of vulcanization agents, crosslinkers, and co-agents — engineered for rubber processing, polyolefin crosslinking, and advanced polymer manufacturing. Trusted by formulators in over 80 countries.

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Polymer Agents — Vulcanization agents and crosslinkers for rubber and polymer processing

About Our Polymer Agents

Shandong Do Sender Chemicals Co., Ltd. offers a broad and specialized range of polymer agents designed to optimize the processing and performance of rubber and polymeric materials. Our Polymer Agents portfolio encompasses vulcanization accelerators, sulfur-donor agents, and multifunctional crosslinking co-agents that meet the rigorous demands of global rubber and plastics manufacturers.

From thiuram-based accelerators like TMTD (CAS 137-26-8) and dithiocarbamate accelerators like Ziram (CAS 137-30-4), to allyl crosslinkers such as TAC (CAS 101-37-1) and TAIC (CAS 1025-15-6), our products deliver consistent curing kinetics, improved mechanical properties, and exceptional thermal stability in the final vulcanizate.

Our acrylate co-agents — including TMPTMA (CAS 3290-92-4) and TMPTA (CAS 15625-89-5) — are widely used in peroxide-cure systems for EPDM, silicone rubber, polyethylene wire and cable insulation, and UV-curable formulations. Each product is manufactured under strict quality controls at our ISO-certified facility in Zibo, Shandong.

Polymer Agents - Colorful plastic pellets in test tubes

Rubber Vulcanization

TMTD (CAS 137-26-8) and Ziram (CAS 137-30-4) serve as ultra-fast primary and secondary accelerators for natural rubber, SBR, NBR, and CR systems, delivering efficient crosslink networks and excellent mechanical properties.

Peroxide Curing Systems

TAC (CAS 101-37-1), TAIC (CAS 1025-15-6), TMPTMA (CAS 3290-92-4), and TMPTA (CAS 15625-89-5) act as highly efficient co-agents in peroxide-cured EPDM, silicone rubber, and polyolefin systems, boosting crosslink density and heat resistance.

Wire & Cable Insulation

TAIC and TMPTMA are preferred co-agents for electron-beam and peroxide crosslinking of polyethylene wire and cable insulation, imparting superior dielectric properties, moisture resistance, and long-term thermal stability.

UV-Curable Coatings & Adhesives

TMPTA (CAS 15625-89-5) is a leading trifunctional acrylate crosslinker for UV-curable formulations in coatings, inks, and adhesives, offering fast cure speed, excellent hardness, and chemical resistance.

Heat-Resistant Rubber

DPTT (CAS 120-54-7) is a sulfur-donor vulcanization accelerator that provides excellent heat resistance and low compression set in natural rubber and polychloroprene compounds designed for demanding thermal environments.

Specialty Elastomers & Composites

TMAIC (CAS 6291-95-8) and DBP (CAS 92387-50-3) serve specialty applications in high-performance elastomers, fiber-reinforced composites, and radiation-cured systems requiring unique rheological or processing profiles.

Thiuram Accelerator

TMTD

CAS 137-26-8

Tetramethylthiuram Disulfide — a primary/secondary rubber vulcanization accelerator and sulfur donor. Widely used in natural rubber, SBR, NBR, and CR systems. Also effective as a fungicide and bactericide.

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Dithiocarbamate Accelerator

Ziram (ZDMC)

CAS 137-30-4

Zinc Dimethyldithiocarbamate — an ultra-fast vulcanization accelerator for natural rubber and latex. Provides excellent scorch resistance balance, good aging properties, and is effective in both dry and latex rubber compounds.

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Allyl Crosslinker

TAC

CAS 101-37-1

Triallyl Cyanurate — a trifunctional crosslinking co-agent for peroxide-cured elastomers and thermosets. Improves crosslink density, heat resistance, and mechanical properties in EPDM, FKM, and polyolefin systems.

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Allyl Crosslinker

TAIC

CAS 1025-15-6

Triallyl Isocyanurate — a premium trifunctional co-agent for electron-beam, peroxide, and UV crosslinking. Superior to TAC in radiation efficiency. Extensively used in PE wire & cable insulation and high-voltage cable applications.

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Acrylate Co-Agent

TMPTMA

CAS 3290-92-4

Trimethylolpropane Trimethacrylate — a trifunctional acrylate co-agent widely used in rubber-to-metal bonding, EPDM seals, and polyethylene crosslinking. Provides high crosslink efficiency with low compression set and excellent thermal stability.

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Specialty Co-Agent

TMAIC

CAS 6291-95-8

Trimethallyl Isocyanate — a multifunctional crosslinking monomer for radiation and peroxide cure of specialty fluoropolymers, silicone, and high-performance elastomers requiring superior thermal and chemical resistance.

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Processing Agent

DBP

CAS 92387-50-3

1,2,3,6,7,8,9,10,11,12-Decahydrobenzopyrene — a specialty rubber processing agent and plasticizer. Provides excellent compatibility with natural and synthetic rubbers, improving processability and reducing Mooney viscosity in high-filler compounds.

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Sulfur-Donor Accelerator

DPTT

CAS 120-54-7

Dipentamethylenethiuram Tetrasulfide — a sulfur-donor vulcanization accelerator providing efficient mono-polysulfide crosslinks with excellent heat aging resistance. Ideal for CR, NR, and EPDM compounds in high-temperature service conditions.

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Acrylate Co-Agent

TMPTA

CAS 15625-89-5

Trimethylolpropane Triacrylate — a highly reactive trifunctional acrylate crosslinker. The preferred monomer for UV-curable coatings, printing inks, and adhesives. Also used as a radiation co-agent for rubber and thermoplastic vulcanizates (TPV).

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R&D Service

Custom Co-Agent Blends

We develop bespoke co-agent packages optimized for your specific elastomer compound, curing system, and processing conditions. Our R&D team works alongside your formulators from lab trials through full commercial scale-up.

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Technical Service

Vulcanization Optimization

Our technical specialists provide comprehensive vulcanization system optimization — accelerator selection, dosage optimization, cure time, and temperature profiling — to maximize your compound's mechanical performance and production efficiency.

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Product	CAS No.	Chemical Name	Appearance	Purity (min.)	Function
TMTD	137-26-8	Tetramethylthiuram Disulfide	White powder	≥ 98.0%	Accelerator / Sulfur donor
Ziram (ZDMC)	137-30-4	Zinc Dimethyldithiocarbamate	White powder	≥ 98.0%	Ultra-fast accelerator
TAC	101-37-1	Triallyl Cyanurate	White crystalline solid	≥ 98.0%	Crosslinking co-agent
TAIC	1025-15-6	Triallyl Isocyanurate	White crystalline solid	≥ 98.0%	Crosslinking co-agent / EB
TMPTMA	3290-92-4	Trimethylolpropane Trimethacrylate	Colorless to pale yellow liquid	≥ 95.0%	Acrylate co-agent
TMAIC	6291-95-8	Trimethallyl Isocyanate	White powder / liquid	≥ 97.0%	Specialty co-agent
DBP	92387-50-3	1,2,3,6,7,8,9,10,11,12-Decahydrobenzopyrene	Yellow to amber liquid/solid	≥ 95.0%	Processing agent / plasticizer
DPTT	120-54-7	Dipentamethylenethiuram Tetrasulfide	Off-white to pale yellow powder	≥ 97.0%	Sulfur-donor accelerator
TMPTA	15625-89-5	Trimethylolpropane Triacrylate	Colorless to pale yellow liquid	≥ 95.0%	Acrylate crosslinker

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Polymer Agents Product Brochure

Complete overview of our polymer agents portfolio including vulcanization accelerators, crosslinkers, and co-agents — with application guidelines and product selection recommendations.

Brochure / English / PDF 2.1 MB

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TMTD Technical Data Sheet (TDS)

Detailed physical, chemical, and performance specifications for TMTD — Tetramethylthiuram Disulfide (CAS 137-26-8).

TDS / English / PDF 0.6 MB

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TAC / TAIC Technical Data Sheet (TDS)

Technical specifications and application guidance for Triallyl Cyanurate (CAS 101-37-1) and Triallyl Isocyanurate (CAS 1025-15-6) crosslinking co-agents.

TDS / English / PDF 0.8 MB

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TMPTMA / TMPTA Technical Data Sheet (TDS)

Specifications and formulation guidance for Trimethylolpropane Trimethacrylate (CAS 3290-92-4) and Trimethylolpropane Triacrylate (CAS 15625-89-5).

TDS / English / PDF 0.7 MB

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Safety Data Sheets (SDS) — Polymer Agents

Regulatory-compliant safety data sheets for all polymer agents in our portfolio. Covering safe handling, storage, transportation, and emergency response procedures.

SDS Package / English / PDF 1.5 MB

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Polymer agents — including thiuram accelerators, dithiocarbamates, and multifunctional acrylate co-agents — require proper handling precautions. Some products may cause skin sensitization or respiratory irritation; refer to individual Safety Data Sheets (SDS) before handling. Store in cool, dry, well-ventilated areas away from heat and incompatible materials. Always consult the SDS prior to use. Our 24/7 technical team is available for guidance on safe handling, storage, and emergency response procedures.