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Shreebond HM 50 (HMMM 50) – Reliable Rubber Adhesion Resin for Tyre and Rubber Goods

Shreebond HM 50 (HMMM 50) – Reliable Rubber Adhesion Resin for Tyre and Rubber Goods

SHREEBOND HM 50 (HMMM 50) is a high-quality methylene donor adhesive resin, ideal for rubber-to-cord bonding systems. It contains 50% active Hexa Methoxy Methyl Melamine (HMMM) coated on precipitated silica, making it a clean, low-dusting alternative to traditional hexamine. Like its counterpart CYREZ® 965, this product is engineered for use in tyre manufacturing, rubber conveyor belts, V-belts, and reinforced rubber goods.

Chemical Properties:

HMMM content50% ± 1
Ash content(8500C/ Ihr)45% ± 2
Moisture Content(Karl Fisher)4.0% max
Loss on Drying(1050C/hr)5.0% max
Free Formaldehyde(100 mesh)0.1% max
Sieve Residue (Wet)0.5% max

Key Benefits

  • Proven adhesion promoter for bonding rubber to steel cord and polyester or nylon fabrics

  • 50% HMMM content ensures effective performance with better scorch safety

  • Enhanced fatigue resistance and bonding strength under dynamic stress

  • Free-flowing, dust-free powder for safer handling and easier mixing

  • Ideal for two-stage mixing systems


Applications

  • Tyres (PCR, TBR, OTR)

  • Conveyor & Transmission Belts

  • Rubber Hoses and Profiles

  • Rubberized Fabrics

  • Industrial and Automotive Rubber Components

Typically used at 4–5 phr with resorcinol donors (3–4.5 phr). Should be added during the final mixing stage to ensure proper dispersion and performance.


Technical Specifications

  • Appearance: White to off-white powder

  • Active Content: 50% HMMM

  • Carrier: Precipitated Silica

  • Bulk Density: 0.35–0.50 g/cm³

  • Moisture Content: ≤1.0%

  • Storage Stability: Minimum 12 months in sealed packaging


Packaging
Packed in 25 kg HDPE-lined paper bags or customized jumbo bags upon request.


Why Choose Shreebond HM 50?
SHREEBOND HM 50 gives formulators the balance of performance and process safety. Its 50% activity level is suited for applications where moderate HMMM loading is desired. With excellent bonding performance and improved scorch control, it’s a preferred choice for modern rubber compounding systems aiming for consistent, high-quality outputs.

Application

Rubber and Tire Manufacturing

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