Epoxidized Soybean Oil (ESO)

Summary description:

Chlorinated polyethylene (CPE), with CAS No. 63231-66-3 and a molecular weight typically ranging from 10,000 to 200,000 g/mol, is a saturated polymer often used as a modifier for polyvinyl chloride (PVC).

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Dimon-produced products

Epoxidized Soybean Oil (ESO)

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Detailed Introduction

Epoxidized soybean oil (ESO), with CAS No. 8013-07-8, has the molecular formula C₅₇H₁₀₆O₁₀ (average) and a molecular weight of approximately 956–960 g/mol. It is a widely used environmentally friendly plasticizer and stabilizer.
- Appearance and Physical Parameters

Product Name	Epoxidized Soybean Oil (EOS)
Testing Standards	Enterprise Standard
Appearance	Light yellow oily liquid
Odor	Slightly odorous
Ester content, % ≥	99.0
Color, (platinum-cobalt scale) ≤	150# -- 200#
Specific gravity (20°C)	0.990+0.005
Epoxy value (%) ≥	6.0
Flash point °C ≥	280

- Chemical properties: It exhibits excellent thermal and photostability. It can absorb hydrogen chloride (HCl) released during the thermal degradation of polyvinyl chloride (PVC), thereby preventing further degradation of PVC and functioning as a heat stabilizer. The epoxy group is capable of undergoing ring-opening reactions with acids, alcohols, amines, and other functional groups. Under strongly acidic or strongly alkaline conditions, the epoxy bond may cleave. It demonstrates outstanding compatibility with PVC resins, acrylic resins, alkyd resins, and other polymers.
Uses
Epoxidized soybean oil is primarily used as a plasticizer and stabilizer for polyvinyl chloride (PVC) plastics, with the following specific applications:
1. Plasticizers for PVC products: Used in both flexible and rigid PVC applications, such as films, synthetic leather, insulation for wires and cables, floor coverings, hoses, shoe soles, and more. They enhance the flexibility, low-temperature resistance, and impact resistance of PVC.
2. Heat stabilizers and light stabilizers: This is an auxiliary heat stabilizer that can significantly enhance the heat resistance and weatherability of PVC products, thereby preventing discoloration (yellowing) during processing and service.
3. Food packaging materials: Due to their non-toxic and odorless properties (in compliance with FDA standards), they are commonly used in PVC products that require non-toxicity, such as food wrap films, food containers, and medical devices.
4. Coatings and Inks: Used as a modifier for alkyd resin coatings to enhance adhesion, weather resistance, and flexibility. Also employed in certain inks as a plasticizer and dispersant.
5. Other applications: used as a plasticizer in rubber processing; used as an additive in synthetic lubricating oils or greases.