Description

Fatty Acids, C16-18 And C18-Hydroxy, Polymers With Adipic Acid, Isostearic Acid, Pentaerythritol And Stearic Acid is a high-performance, synthetic polyester polyol designed for demanding industrial applications. This specialized polymer offers a unique combination of properties derived from its multi-acid and polyol composition, including excellent flexibility, adhesion, and chemical resistance. It is a critical raw material for formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability and performance.

Application

• High-Performance Polyurethane Coatings: Used as a polyol component in two-component PU systems for industrial, automotive, and protective coatings, providing excellent weatherability and mechanical properties.
• Adhesives and Sealants: Imparts flexibility, adhesion, and hydrolytic stability to polyurethane-based adhesives and sealants for construction and automotive assembly.
• Elastomers: Serves as a key building block in the synthesis of castable, thermoplastic, or millable polyurethane elastomers requiring a balance of toughness and resilience.
• Resin Modification: Acts as a reactive modifier for alkyd, polyester, or acrylic resins to improve flexibility, pigment wetting, and substrate adhesion.
• Inks and Overprint Varnishes: Utilized in formulations for flexible packaging inks and varnishes that require good adhesion to various films and low migration properties.
• Specialty Plasticizers: Functions as a polymeric plasticizer for PVC and other polymers, offering low volatility and excellent permanence.

Basic Information

Product Name	Fatty Acids, C16-18 And C18-Hydroxy, Polymers With Adipic Acid, Isostearic Acid, Pentaerythritol And Stearic Acid
CAS No.	161074-57-3
Molecular Formula	Not a single molecule; a complex polymeric mixture.
Molecular Weight	Varies (Polymeric). Typical number average molecular weight (Mn) ranges from 500 to 3000 g/mol.
Synonyms	Polyester polyol from C16-18 and C18-hydroxy fatty acids, adipic acid, isostearic acid, pentaerythritol, and stearic acid; Fatty acid polyester polyol; Hydroxyl-terminated polyester; Adipic acid/isostearic acid/pentaerythritol/stearic acid/fatty acids copolymer; Polyester polyol resin; CAS 161074-57-3; Multi-acid polyester polyol.
EINECS	Contact for details.

Quality Control

Our production of this polyester polyol adheres to strict quality management protocols. Each batch is characterized by key parameters including hydroxyl value, acid value, viscosity, and color to ensure consistency and performance. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. Our quality system is designed to support compliance with relevant global standards for industrial chemical manufacturing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (typically 15-25°C). Keep away from heat sources and open flame. Under these conditions, the product is typically stable for at least 12 months from the date of manufacture. Moisture absorption should be minimized.

Specification

Item	Specification
Appearance	Viscous liquid to semi-solid
Color (Gardner)	≤ 4
Hydroxyl Value (mg KOH/g)	30 - 120 (Grade Dependent)
Acid Value (mg KOH/g)	≤ 5.0
Viscosity @ 25°C (mPa·s)	500 - 5000 (Grade Dependent)
Water Content (%)	≤ 0.1

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