Description

Desmophen 680 is a high-performance polyol resin, identified by CAS number 82115-39-7, widely recognized for its excellent reactivity and contribution to final product properties. It is a critical raw material for formulating durable, high-quality polyurethane coatings, adhesives, and elastomers. This product is essential for manufacturers in the industrial coatings, automotive refinish, and construction sealants sectors seeking to enhance product performance and longevity.

Application

Desmophen 680 serves as a key component in various high-performance polyurethane systems. Its primary applications include:

• Industrial and Protective Coatings: Used in two-component polyurethane coatings for metal, concrete, and plastic substrates, providing excellent chemical resistance, hardness, and weatherability.
• Automotive Refinish Paints: A vital resin in clearcoats and topcoats, delivering high gloss, scratch resistance, and rapid curing profiles.
• Adhesives and Sealants: Formulated into high-strength structural adhesives and flexible sealants for the construction and transportation industries.
• Elastomers: Used in the production of castable and thermoplastic polyurethane elastomers for industrial parts, rollers, and gaskets.
• Wood Finishes: Imparts superior durability, clarity, and resistance to yellowing in high-end furniture and flooring finishes.

Basic Information

Product Name	Desmophen 680
CAS No.	82115-39-7
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyether polyol 680; Polyol resin 680; Bayer Desmophen 680; Aliphatic polyester polyol; Hydroxyl-functional polyester; PU polyol 680; Polyurethane polyol resin
EINECS	Contact for details

Quality Control

Our Desmophen 680 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance reliability. Key parameters such as hydroxyl value, viscosity, acid value, and water content are rigorously tested against internal specifications. A Certificate of Analysis (COA) documenting these results is provided with every shipment to guarantee compliance with your formulation 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 / 59-77°F). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent moisture absorption, which can affect product performance. Keep away from heat and open flame.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 2
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Viscosity (at 25°C)	Contact for details
Water Content (%)	≤ 0.10

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