Description

1,3-Isobenzofurandione, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol CAS NO 30525-36-1 is a specialized polymeric material derived from the reaction of phthalic anhydride and trimethylolpropane. This product is valued for its role as a key intermediate or modifier in the synthesis of high-performance resins and coatings. It is primarily sought after by manufacturers in the polymer, specialty chemical, and advanced material industries for developing products with enhanced durability and specific functional properties.

Application

• As a reactive intermediate in the production of alkyd resins for industrial coatings and paints.
• Modifier for unsaturated polyester resins (UPR) to alter flexibility and chemical resistance.
• Component in the synthesis of polyols for polyurethane elastomers and foams.
• Building block for specialty plasticizers and polymer additives.
• Used in formulating adhesives and sealants requiring specific rheological properties.
• Potential use in epoxy resin systems as a curing agent or toughness modifier.
• Research and development of novel thermosetting polymers for advanced composites.

Basic Information

Product Name	1,3-Isobenzofurandione, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol
CAS No.	30525-36-1
Molecular Formula	(C8H4O3·C6H14O3)n
Molecular Weight	Varies (Polymer)
Synonyms	Phthalic Anhydride-Trimethylolpropane Polymer; Phthalic Anhydride/TMP Polymer; Poly(phthalic anhydride-co-trimethylolpropane); TMP-Phthalic Anhydride Copolymer; Trimethylolpropane Phthalate Polymer; Alkyd Resin Intermediate; PA-TMP Polymer; Phthalic Acid Polymer with Trimethylolpropane
EINECS	Contact for details

Quality Control

Our production of 1,3-Isobenzofurandione, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency in parameters such as acid value, hydroxyl value, viscosity, and molecular weight distribution. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Viscous liquid to solid mass
Color (Gardner)	≤ 4
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	150 - 250
Viscosity (at 25°C, cP)	2000 - 10000
Water Content	≤ 0.5%
Identification (IR)	Conforms

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