Description

1,3-Isobenzofurandione, Hexahydro-, Polymer With 2,2,4-Trimethyl-1,3-Pentanediol CAS NO 109579-95-5 is a high-performance, polymeric chemical intermediate derived from the reaction of hexahydrophthalic anhydride and 2,2,4-trimethyl-1,3-pentanediol. This compound is valued for its role in creating durable, chemically resistant polymers and coatings with excellent weatherability and mechanical properties. It is primarily sought by manufacturers in the paints & coatings, advanced resin, and specialty adhesive industries for formulating high-end products.

Application

• Alkyd Resin Modifier: Imparts enhanced flexibility, hydrolytic stability, and durability to alkyd-based coatings and varnishes.
• Polyester Resin Synthesis: Serves as a key building block for unsaturated polyester resins used in fiberglass-reinforced plastics (FRP) and composites.
• High-Performance Industrial Coatings: Used in formulations for automotive, marine, and industrial maintenance coatings requiring superior corrosion and chemical resistance.
• Powder Coating Crosslinker: Acts as a reactive component in carboxyl-functional polyester resins for thermosetting powder coatings.
• Plasticizer Intermediate: Employed in the synthesis of polymeric plasticizers for PVC and other polymers, offering low volatility and good permanence.
• Adhesive & Sealant Formulations: Enhances the toughness and adhesion properties of polyurethane and other specialty adhesives.
• Electrical Insulating Materials: Used in the production of insulating varnishes and compounds for the electrical industry.

Basic Information

Product Name	1,3-Isobenzofurandione, Hexahydro-, Polymer With 2,2,4-Trimethyl-1,3-Pentanediol
CAS No.	109579-95-5
Molecular Formula	(C8H10O3·C8H18O2)n
Molecular Weight	Polymeric material (Contact for details)
Synonyms	Hexahydrophthalic Anhydride - Trimethylpentanediol Polymer; HHPA-TMPD Polymer; Poly(hexahydrophthalic anhydride-co-2,2,4-trimethyl-1,3-pentanediol); 2,2,4-Trimethyl-1,3-pentanediol polymer with hexahydrophthalic anhydride; Hexahydrophthalic acid, polymer with 2,2,4-trimethyl-1,3-pentanediol; TMPD-HHPA copolymer; Polyol-modified hexahydrophthalic anhydride resin; Cyclohexane-1,2-dicarboxylic anhydride, polymer with 2,2,4-trimethylpentane-1,3-diol
EINECS	Contact for details

Quality Control

Our production of 1,3-Isobenzofurandione, Hexahydro-, Polymer With 2,2,4-Trimethyl-1,3-Pentanediol adheres to strict quality management protocols to ensure batch-to-batch consistency and performance. Each lot is characterized for critical parameters such as acid value, hydroxyl value, viscosity, and color to meet precise customer specifications. Certificates of Analysis (COA) documenting these results are provided and the material is produced in facilities operating under ISO 9001 quality standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and sources of heat. Under these conditions, the product is stable for extended periods.

Specification

Item	Specification
Appearance	Viscous liquid to solid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	50 - 150
Viscosity @ 25°C (cPs)	2000 - 10000
Water Content (KF)	≤ 0.2%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.