Description

Diester Of Carboxymethoxy Benzophenone And Poly Tetra-Methyleneglycol 250 is a specialized polymeric diester compound designed for advanced material science applications. This product is valued for its ability to impart specific functional properties, such as UV absorption and plasticization, into high-performance polymer systems. It is primarily sought by formulators and manufacturers in the polymer, coatings, and specialty chemical industries seeking to enhance product durability and performance.

Application

• As a functional additive and light stabilizer in polymer films and coatings.
• Potential use as a plasticizer or compatibilizer in specialty polymer blends and composites.
• Incorporation into UV-curable resin systems for coatings and inks.
• As an intermediate in the synthesis of more complex photoactive materials.
• Use in personal care formulations requiring specific rheological or film-forming properties.
• Application in adhesive formulations to modify flexibility and environmental resistance.

Basic Information

Product Name	Diester Of Carboxymethoxy Benzophenone And Poly Tetra-Methyleneglycol 250
CAS No.	813452-37-8
Molecular Formula	Contact for details
Molecular Weight	~250 (for PEG unit, nominal)
Synonyms	Poly(ethylene glycol) 250 bis(4-carboxymethoxybenzophenone) ester; PEG 250 Benzophenone-4,4'-dicarboxymethyl ether diester; Benzophenone-4,4'-diacetic acid, bis(polyoxyethylene) ester; Polyoxyethylene (250) bis(4-benzoyl-3-hydroxyphenoxyacetate); Light Stabilizer PEG-Benzophenone Diester; UV Absorber Polyethylene Glycol Ester; Polyethylene Glycol (250) Diester of Benzophenone-4-carboxylic Acid
EINECS	Contact for details

Quality Control

Our Diester Of Carboxymethoxy Benzophenone And Poly Tetra-Methyleneglycol 250 is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in composition, purity, and functional performance. A comprehensive Certificate of Analysis (COA) detailing assay, identity confirmation, and key physical parameters is provided with every shipment to guarantee it meets your specific application requirements.

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). Due to its hygroscopic nature, minimize exposure to atmospheric humidity during handling. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Pale yellow to amber viscous liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Average Molecular Weight (GPC)	220 - 280
Water Content (KF)	≤ 1.0%
Acid Value	Contact for details
Heavy Metals (as Pb)	≤ 10 ppm

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