Rubber Vulcanizing Agent
Rubber Vulcanizing Agent Manufacturer & Supplier
Great Bridge Chemical supplies rubber vulcanizing agents and curing additives for natural and synthetic rubber compounds. The product range includes TCY, DTDM, DTDC and PDM (HVA-2), covering different vulcanization and crosslinking requirements.
Each product has a different chemical structure and role in rubber compounding. Some act as sulfur donors, while others are used as curing agents or multifunctional crosslinking additives. Product selection depends on the rubber polymer, curing system, processing conditions and required properties of the finished product.
Product Types & Grades
TCY – Trithiocyanuric Acid
TCY is a specialty rubber curing agent used in selected halogenated and specialty elastomer systems. It is listed for applications involving ACM, CR, CIIR and BIIR, subject to formulation compatibility.
DTDM – 4,4'-Dithiodimorpholine
DTDM is a sulfur-donor vulcanizing agent for natural and synthetic rubber. It is used in efficient and semi-efficient vulcanization systems where controlled sulfur contribution is required.DTDM can also contribute to the acceleration of vulcanization.
DTDC – Caprolactam Disulfide
DTDC is a sulfur-donor vulcanizing agent used in natural and synthetic rubber compounds. It is considered for low-sulfur curing systems and selected applications involving thick-walled or injection-molded rubber products.
PDM (HVA-2) – N,N'-m-Phenylene Bismaleimide
PDM, commonly known as HVA-2, is a multifunctional rubber crosslinking additive. It is used in selected conventional and peroxide-curing systems, depending on the formulation.
Technical Specifications
|
Product |
Chemical Name |
CAS No |
Available Form |
|
TCY |
Trithiocyanuric Acid |
638-16-4 |
Powder |
|
DTDM |
4,4'-Dithiodimorpholine |
103-34-4 |
Crystal, oiled crystal, granule |
|
DTDC |
Caprolactam Disulfide |
23847-08-7 |
Powder |
|
PDM (HVA-2) |
N,N'-m-Phenylene Bismaleimide |
Confirm by current TDS |
Powder, oiled powder |
Key Quality Parameters
|
Product |
Parameters to Check |
|
TCY |
Appearance, purity, ash content, loss on heating and sieve residue |
|
DTDM |
Appearance, initial melting point, loss on drying, ash and product form |
|
DTDC |
Appearance, melting range, heat loss, ash and sieve residue |
|
PDM (HVA-2) |
Appearance, melting point, loss on drying, ash, sieve residue and oil content for oiled grades |
Technical note: Specifications and test methods should be checked against the current product-specific TDS. Do not compare values from different grades or test methods as if they were equivalent. Buyers can request the latest specification sheet and batch COA before approval.
Tire manufacturing: Sulfur-donor and crosslinking additives for selected tire compound formulations.
Conveyor belts: Curing systems for rubber compounds used in industrial conveying applications.
Rubber hoses: Vulcanization additives for natural and synthetic rubber hose compounds.
Automotive rubber components: Compounds for V-belts, molded parts and other rubber components.
Seals and gaskets: Curing additives for compounds requiring controlled crosslinking and defined compression properties.
Specialty elastomers: Selected ACM, CR, CIIR, BIIR and other rubber formulations, depending on product compatibility.


Choosing a vulcanizing agent requires more than matching the product name to an application. Buyers and compound developers should evaluate:
Rubber polymer: NR, SBR, BR, EPDM, CR, ACM or other elastomers.
Curing chemistry: Conventional sulfur, efficient sulfur, semi-efficient sulfur or peroxide curing.
Processing conditions: Mixing temperature, storage time, molding temperature and cure cycle.
Scorch safety: The time available for processing before premature vulcanization occurs.
Final compound requirements: Heat aging, compression set, tensile properties, adhesion and other application-specific targets.
Product form: Powder, crystal, oiled material or granule, depending on handling and dispersion requirements.
Manufacturing & Quality Control
Heze Great Bridge Chemical Co., Ltd. holds ISO 9001:2015 certification. For purchasing evaluation, buyers can request product-specific TDS, SDS and batch COA documents. Relevant quality checks should be defined according to the grade, including appearance, melting behavior, moisture or loss on heating, ash, purity and particle-size control where applicable.
Packaging & Supply
|
Product |
Published Packaging Information |
|
TCY |
25 kg composite paper bag with inner polyethylene liner |
|
DTDM |
25 kg plastic woven bag, lined paper bag or kraft paper bag |
|
DTDC |
20 kg paper-plastic composite bag |
|
PDM (HVA-2) |
25 kg kraft bag or other options subject to confirmation |
Store products in their original sealed packaging in a cool, dry and well-ventilated area. Follow the product-specific SDS for storage, handling and safety requirements.
FAQ

Request a Quote
Looking for a rubber vulcanizing agent for your production process?
Send Great Bridge Chemical the following information:
Required product or chemical name
Rubber polymer and target application
Existing sulfur or peroxide curing system
Required technical specifications
Preferred product form and packaging
Order quantity and destination country
Our team can provide product information, available technical documents and a quotation based on your requirements.
Contact Great Bridge Chemical
Email: export@greatbridge-chem.com
Tel: +86-530-5399496
WhatsApp: 86 158 0675 1555
Contact us for product specifications, samples and bulk supply inquiries.
With abundant experience, we are one of the most professional rubber vulcanizing agent manufacturers and suppliers in China. We warmly welcome you to buy high quality rubber vulcanizing agent in stock here and get pricelist from our factory. Good service and reasonable price are available.
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