Description

Propanoic Acid, 3-Hydroxy-2,2-Dimethyl-, 3-Hydroxy-2,2-Dimethylpropyl Ester, Polymer With Hexahydro-1,3-Isobenzofurandione is a specialized polymeric ester, CAS NO 71839-60-6, valued for its unique combination of a rigid isobenzofurandione core and flexible hydroxy acid ester segments. This structure provides excellent film-forming properties, chemical resistance, and compatibility with various polymer matrices. It is primarily sought after by manufacturers in the coatings, adhesives, and advanced material sectors for developing high-performance, durable products.

Application

• High-Performance Coatings: Used as a key resin or cross-linking agent in industrial, automotive, and marine coatings for enhanced durability, gloss, and chemical resistance.
• Advanced Adhesives & Sealants: Serves as a polymeric modifier to improve adhesion strength, flexibility, and environmental stability in structural and specialty adhesive formulations.
• Engineering Plastics & Composites: Acts as a compatibilizer or additive to modify the impact strength, thermal properties, and processability of thermoplastic and thermoset composites.
• Electronic Encapsulants: Employed in potting compounds and encapsulants for electronic components due to its potential for good electrical insulation and moisture barrier properties.
• Specialty Inks: Utilized in the formulation of inks requiring high abrasion resistance and adhesion to difficult substrates.

Basic Information

Product Name	Propanoic Acid, 3-Hydroxy-2,2-Dimethyl-, 3-Hydroxy-2,2-Dimethylpropyl Ester, Polymer With Hexahydro-1,3-Isobenzofurandione
CAS No.	71839-60-6
Molecular Formula	(C8H14O4.C7H8O3)x
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	3-Hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropanoate polymer with hexahydro-1,3-isobenzofurandione; Trimethylolpropane mono(3-hydroxy-2,2-dimethylpropionate) polymer with hexahydrophthalic anhydride; HHPA-TMP ester polymer; Poly(3-hydroxy-2,2-dimethylpropyl 3-hydroxy-2,2-dimethylpropionate-co-hexahydrophthalic anhydride); Hexahydrophthalic anhydride-trimethylolpropane ester copolymer; Polyol-modified HHPA copolymer; Light-stable polyester polyol resin.
EINECS	Contact for details

Quality Control

Our production of Propanoic Acid, 3-Hydroxy-2,2-Dimethyl-, 3-Hydroxy-2,2-Dimethylpropyl Ester, Polymer With Hexahydro-1,3-Isobenzofurandione adheres to a stringent quality management system. Each batch undergoes rigorous testing for key parameters such as acid value, hydroxyl value, viscosity, and color to ensure consistent performance and batch-to-batch reproducibility. Certificates of Analysis (COA) documenting these specifications are available upon request.

Storage

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

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Acid Value (mg KOH/g)	≤ 5.0
Hydroxyl Value (mg KOH/g)	Contact for details
Viscosity @ 25°C (cP)	Contact for details
Color (Gardner)	≤ 3
Moisture Content (KF)	≤ 0.5%

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