5-Isobenzofurancarboxylic acid, 1,3-dihydro-1,3-dioxo-, polymer with 2,2-dimethyl-1,3-propanediol, 1,2-ethanediol and 1,3-isobenzofurandione
CAS: 186688-25-5
Category: Organic Intermediates
| Purity | Industrial Grade ≥95%; Polymer Grade ≥98%; High Purity Grade available according to customer specifi |
| Molecular Formula | Cyclic polyester polymer (approximate repeating unit: C20H22O9) |
| Molecular Weight | Average molecular weight typically varies dependin |
| Appearance | White to light yellow solid polymer resin, flakes, granules, or powder. |
| Packaging | 25 kg kraft paper bag with PE liner, 25 kg woven bag, 200 kg fiber drum, or customized industrial packaging. |
| Testing Indicators | Appearance — Visual inspection; Softening point — DSC/TGA thermal analysis; Molecular weight distribution — Gel permeation chromatography (GPC); Acid value — Potentiometric titration; Hydroxyl value — Chemical titration method; Moisture content — Karl Fischer titration; Thermal stability — Thermogravimetric analysis (TGA); Functional group identification — FTIR spectroscopy; Residual monomers and solvents — GC/MS analysis. |
| Storage Notes | Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly closed and protected from moisture, heat, and direct sunlight. Avoid contamination with strong acids, strong bases, and oxidizing agents. Store away from ignition sources and excessive humidity. |
| Lead Time | 10 days |
This polyester polymer is an aromatic polyester material synthesized from isobenzofurandione derivatives, diols, and aromatic carboxylic acid components. It is mainly used as a specialty polymer intermediate, resin modifier, coating material component, adhesive raw material, and functional polymer additive. It provides good thermal resistance, chemical resistance, and mechanical properties for industrial polymer formulations.