Description

1,3-Isobenzofurandione, 3A,4,7,7A-Tetrahydromethyl-, Polymer With 2,2-Dimethyl-1,3-Propanediol And 3A,4,7,7A-Tetrahydro-1,3-Isobenzofurandione is a high-performance, cross-linked polyester resin derived from specialized anhydride and diol monomers. This polymer is valued for its excellent thermal stability, chemical resistance, and mechanical properties, making it a critical component in advanced composite materials. It is primarily sought after by manufacturers in the coatings, adhesives, and specialty plastics industries for demanding applications.

Application

• High-Performance Industrial Coatings: Used as a resin binder in powder coatings and coil coatings requiring superior weatherability and chemical resistance.
• Electrical Insulating Varnishes: Serves as a key component in wire enamels and insulating materials for motors and transformers due to its thermal stability.
• Composite Materials: Acts as a matrix resin in fiber-reinforced composites for automotive, aerospace, and marine applications.
• Adhesives and Sealants: Imparts durability and adhesion in structural adhesives and high-temperature sealants.
• Specialty Plasticizers and Modifiers: Utilized to enhance the flexibility, toughness, and thermal properties of engineering plastics.
• Decorative Laminates: Employed in the production of durable surface finishes for furniture and architectural panels.

Basic Information

Product Name	1,3-Isobenzofurandione, 3A,4,7,7A-Tetrahydromethyl-, Polymer With 2,2-Dimethyl-1,3-Propanediol And 3A,4,7,7A-Tetrahydro-1,3-Isobenzofurandione
CAS No.	68479-69-6
Molecular Formula	(C11H10O4 · C5H12O2 · C8H8O4)n
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(neopentyl glycol-co-tetrahydrophthalic anhydride-co-methyltetrahydrophthalic anhydride); Polyester resin from neopentyl glycol, tetrahydrophthalic anhydride, and methyltetrahydrophthalic anhydride; NPG-THPA-MTHPA copolymer; Tetrahydrophthalic Anhydride-Methyltetrahydrophthalic Anhydride-Neopentyl Glycol Copolymer; Unsaturated polyester resin based on THPA, MTHPA, and NPG; 68479-69-6 polymer; Acid anhydride copolymer with neopentyl glycol
EINECS	Contact for details

Quality Control

Our production of this specialty polyester resin adheres to rigorous quality testing protocols to ensure batch-to-batch consistency and performance. Key parameters such as acid value, viscosity, glass transition temperature (Tg), and color are strictly monitored. A comprehensive Certificate of Analysis (COA) detailing all specification results is provided with every shipment to support your quality assurance processes.

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 and incompatible organic solvents. The material should be kept under dry conditions to prevent moisture absorption which may affect properties.

Specification

Item	Specification
Appearance	Pale yellow to amber solid or viscous liquid
Acid Value	10 - 30 mg KOH/g
Viscosity (at 25°C)	2000 - 8000 mPa·s (Solution dependent)
Glass Transition Temperature (Tg)	40 - 70 °C
Color (Gardner)	≤ 4
Volatile Content	≤ 2.0 %
Gel Time (at 150°C)	Contact for details

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