Description

Propyleneglycol,Polymer With Maleic Anhydride,Phthalic Anhydride,3A,4,7,7A-Tetrahydro-1,3-Dioxo-2-Oxaindan And 3-Oxa-1,5-Pentanediol CAS NO 42885-00-7 is a specialized polymeric resin derived from a complex co-polymerization of propylene glycol, maleic anhydride, phthalic anhydride, and other reactive intermediates. This compound is engineered to provide exceptional film-forming, adhesion, and cross-linking properties, making it a critical performance additive in advanced coating systems. It is primarily needed by formulators in the paints, coatings, adhesives, and industrial resin sectors seeking to enhance product durability and chemical resistance.

Application

• High-Performance Industrial Coatings: Used as a key resin component in alkyd and polyester-based coatings for metal substrates, providing excellent gloss, hardness, and weatherability.
• Automotive Paints and Primers: Imparts superior adhesion, flexibility, and corrosion resistance in automotive refinish and OEM coating formulations.
• Protective & Marine Coatings: Serves as a building block in coatings designed for harsh environments, including marine, chemical plant, and infrastructure applications.
• Adhesives and Sealants: Functions as a tackifying and reinforcing agent in structural and assembly adhesives, improving bond strength and cohesion.
• Printing Inks: Utilized in specialty ink formulations to enhance pigment wetting, print fidelity, and substrate adhesion.
• Can and Coil Coatings: A critical ingredient in coatings for food packaging (cans) and pre-coated metal coils, offering good formability and resistance.

Basic Information

Item	Details
Product Name	Propyleneglycol,Polymer With Maleic Anhydride,Phthalic Anhydride,3A,4,7,7A-Tetrahydro-1,3-Dioxo-2-Oxaindan And 3-Oxa-1,5-Pentanediol
CAS No.	42885-00-7
Molecular Formula	Complex Polymer - Contact for details
Molecular Weight	Polymer - Contact for details
Synonyms	Propylene Glycol-Maleic Anhydride-Phthalic Anhydride Copolymer; Poly(propylene glycol maleate phthalate); Alkyd Resin Precursor; Modified Polyester Polyol; Maleic-Phthalic Copolymer with Propylene Glycol; 3-Oxa-1,5-pentanediol, polymer with 3a,4,7,7a-tetrahydro-1,3-dioxo-2H-isoindole-2-carboxylic acid, maleic anhydride and phthalic anhydride; PG-MA-PA Copolymer
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict batch-to-batch consistency protocols. Quality is monitored through key parameters including acid value, hydroxyl value, viscosity, and color. Certificates of Analysis (COA) documenting these specifications are provided with every shipment to ensure compliance with your formulation requirements and to guarantee supply reliability for your production 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 heat sources and open flame. The product may be hygroscopic; ensure containers are sealed after use to prevent moisture absorption which can affect reactivity and properties.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 4
Acid Value (mg KOH/g)	5 - 25
Hydroxyl Value (mg KOH/g)	50 - 150
Viscosity (at 25°C)	2000 - 8000 mPa.s
Solid Content	≥ 98%
Identification (IR)	Conforms

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