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First MAC-1489
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First Rubber MAC-1489 is a highly effective anti-yellowing accelerator masterbatch on EPDM carrier. Specifically designed for white and light-colored rubber goods, it delivers outstanding yellowing resistance, achieving grades 4.0 to 5.0 under stable formulation conditions. The product offers a moderate vulcanization speed, with wear resistance, tensile strength, and tear resistance comparable to standard accelerator systems. MAC-1489 is non-staining and non-discoloring, ensuring consistent color stability throughout the product's life. A key advantage is its excellent scorch resistance, allowing compounded rubber to remain stable at room temperature for 3-5 days—overcoming a common limitation of conventional yellowing-resistant accelerators. Recommended dosage: 1.0-3.0 phr with 0.5-2.5 phr sulfur.
Product Categories:
Accelerator
Comprehensive Promoter
Keywords:
- Chemical composition: Highly Effective Anti-Yellowing Promoter
- Complex carrier: EPDM
- Characteristics: Outstanding yellowing resistance, achieving grades 4.0 to 5 under stable conditions with other ingredients in the formulation; exhibits a moderate vulcanization speed, resulting in wear resistance, tensile strength, and tear resistance that are comparable to those of standard accelerator-enhanced products. Additionally, it is free from contamination and discoloration, ensuring consistent color stability in rubber products—particularly making it ideal for use in rubber shoe soles. This product also boasts excellent scorch resistance when compounded into rubber, allowing it to remain stable at room temperature for 3–5 days, thus overcoming the common issue of short scorch times associated with conventional yellowing-resistant accelerators. It is primarily used in white and light-colored rubber shoe soles, as well as other rubber products.
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- Product Description
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What is the worst enemy of white or light‑coloured rubber goods? Yellowing. Sunlight yellowing, heat‑ageing yellowing, or yellowing caused by the formulation itself. For European exports — shoe soles, seals, toys — yellowing means rejection. MAC-1489 is an accelerator designed specifically for anti‑yellowing performance. It is not a conventional accelerator. It is a high‑efficiency anti‑yellowing accelerator masterbatch on an EPDM carrier. In white, light‑coloured, or coloured rubber compounds, it delivers yellowing resistance grades of 4.0–5.0 — provided the other ingredients in the formulation are stable. Cure speed is moderate, and scorch safety is much better than typical anti‑yellowing accelerators. Mixed compounds can sit at room temperature for 3–5 days without urgent moulding — a real advantage for moulding and extrusion shops. Abrasion resistance, tensile strength, and tear strength are comparable to conventional accelerator systems, so you do not sacrifice mechanical properties for colour stability. MAC-1489 is non‑staining and non‑discoloring. It can be used together with thiurams (TS/TT) or dithiocarbamates to speed up curing if needed. Typical dosage is 1.0–3.0 phr, with 0.5–2.5 phr sulphur. Main applications include white shoe soles, light‑coloured tyre sidewalls, coloured sheets, sports equipment, and light‑coloured seals — anywhere colour stability is critical. If yellowing complaints have been a headache, or if you want to proactively solve colour fastness for export products, MAC-1489 is well worth trying. Typical reference data: - Product type: High‑efficiency anti‑yellowing accelerator masterbatch - Carrier: EPDM - Appearance: White to light yellow round granules - Density (20°C): 1.23 ± 0.05 g/cm³ - Yellowing resistance grade: 4.0–5.0 (under stable formulation conditions) - Recommended dosage: 1.0–3.0 phr - Scorch safety (room temperature storage): 3–5 days - Packaging: 25 kg carton or paper bag with inner PE liner - Storage stability: 12 months in unopened packaging under cool, dry conditions Samples and technical data sheets are available. No hard selling — just for your evaluation.
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