GUM FREE B52

• Dispersion & Homogenizing Agent for Non-Carbon-Black Compounds　• Color Enhancement

Overview

GUM FREE B-52 (膠富麗) is designed for rubber compounds filled with silica and inorganic mineral reinforcing fillers. It improves dispersion uniformity and helps enhance rubber product quality and color brilliance.

Physical & Chemical Properties

• Composition: Metallic stearate-based

• Appearance: Milky-white, dust-free powder granules

• Odor: None

• Solubility in water: < 10%

• Density: 1.25 ± 0.05

• pH: 8.5 ± 1 (Alkaline)

• Moisture: < 2.5% (as shipped)

• Ash content: < 35.0%

• Softening point: 75–80 ℃

• Shelf life: 2 years

• Packing: Double-layer laminated woven bag; Net 25 kg/bag

Performance & Applications

• Dispersion & homogenizing agent for silica and inorganic-filled rubber compounds; helps prevent early scorch and may help reprocess partially scorched compounds.

• Provides color enhancement; suitable for transparent, vivid, and bright-colored rubber products (food-contact, footwear, wire & cable, etc.).

• Good compatibility with various rubbers; proper dosage does not harm adhesion or physical properties, and is suitable for peroxide crosslinking systems.

• Especially suitable for extrusion / injection processes requiring high processing safety; white, non-toxic, non-staining, and free of vulcanizing sulfur compounds.

• Excellent roll-release performance; effective for chlorinated rubber compounds such as Neoprene, and can be used synergistically with MOLD-FREE 935P.

※ Actual results should be verified by trial based on formulation, equipment, and operating conditions.

Applicable Rubbers

• Natural Rubber (NR)

• Styrene-Butadiene Rubber (SBR)

• Butadiene Rubber (BR)

• Isoprene Rubber (IR)

• Ethylene-Propylene-Diene Rubber (EPDM)

• Chlorosulfonated Polyethylene (CSM)

• Isobutylene-Isoprene Rubber (IIR)

• Chloroprene Rubber (CR)

• Acrylonitrile-Butadiene Rubber (NBR)

• Polyacrylate Rubber (ACR)

Recommended Dosage / How to Use

• Determine dosage based on filler loading and surface area:
  ・Use 4.0 ± 1.0% of silica (white carbon) amount
  ・Use 1.5 ± 0.5% of clay amount
  ・Use 1.0 ± 0.5% of calcium carbonate amount

• Use 1.0%–2.0% based on raw rubber.

• For Chloroprene Rubber (CR), use about 2–4 PHR.

Notes & Disclaimer

This information is provided in good faith based on years of on-site use and verification. Since applications and operating conditions vary, please conduct trials under actual conditions before adoption.