Sinomer® SA is a monomer with low shrinkage and volatility, flexibility, excellent weather resistance and water resistance. It can be widely used in inks, release coatings, coatings and textile coatings.
SINOMER® SA
Chemical Name: Stearyl Acrylate;Octadecyl acrylate
CAS No.: 4813-57-4
MF: C21H40O2 MW： 324.54
Molecular structure：
SINOMER® SA (Stearyl Acrylate) is a long-chain hydrophobic monomer featuring a C18 alkyl group and a polymerizable acrylate double bond. It offers extremely low shrinkage, low volatility, and excellent flexibility in cured films. The long alkyl side chain imparts outstanding weather resistance, water resistance, and hydrophobicity, making it an ideal building block for specialty polymer syntheses where hydrophobic modification is required.
| Item | Specification |
| Appearance | White solid to liquid |
| Assay | ≥96% |
| Melting Point | 20~30°C |
| Acid Value | ≤0.5 mg KOH/g |
| Inhibitor (MEHQ), ppm | ≤500 |
Low curing shrinkage and low volatility
Excellent flexibility and toughness
Outstanding weather resistance and water resistance
Long C18 hydrophobic chain for effective hydrophobicity
Good compatibility with various monomers and resins
SINOMER® SA is widely used as a functional hydrophobic monomer in the synthesis of specialty polymers across multiple industries:
Amphiphilic Polymers – Used as a hydrophobic monomer in the synthesis of polymeric emulsifiers, polymeric stabilizers, and self-emulsifying leather waterproofing agents. It copolymerizes with hydrophilic monomers (e.g., acrylic acid, maleic acid, acrylamide) to generate amphiphilic polymer structures.
Waterproofing Agents – Applied in the synthesis of fabric “three-proof” finishing agents (waterproof, oil-proof, stain-resistant) and fluorine-free waterproofing systems, imparting long-lasting hydrophobic protection to textiles.
Hydrophobically Associating Thickeners – A small amount of SA is copolymerized with hydrophilic monomers like acrylamide. In aqueous solutions, the stearyl side chains associate reversibly, forming hydrophobic crosslinking points that significantly enhance viscosity.
Crude Oil Pour Point Depressants – Serves as a primary monomer to synthesize polymeric pour point depressants, improving the low-temperature flowability of crude oil.
Functional Modifier – Suitable for other polymer applications requiring hydrophobic modification, including specialty coatings, inks, and release coatings.
● 10kg,100kg,150kgs/drum.
Being kept in dry, clean warehouse with well ventilation.
Avoid exposing to light and heating.
Protecting the product from leakage, rain and insolation during transportation.
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Full coverage of REACH, FDA, and GB standards
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