Description

1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)], 1,1'-methylenebis[4-isocyanatobenzene], methyloxirane and oxirane is a specialized polyurethane-polyether hybrid polymer, known for its unique combination of flexibility, toughness, and chemical resistance. This advanced material is engineered to deliver exceptional performance as a reactive intermediate or functional additive in high-value formulations. It is primarily sought by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product durability and processing characteristics.

Application

• High-Performance Coatings: Used as a resin modifier in polyurethane coatings for automotive, industrial, and protective applications to improve flexibility, adhesion, and chemical resistance.
• Adhesives & Sealants: Serves as a key polyol component in formulating flexible and durable polyurethane adhesives and sealants for construction and automotive assembly.
• Elastomers: Acts as a building block in the production of cast or thermoplastic polyurethane elastomers (TPU) requiring a balance of softness and mechanical strength.
• Resin Modification: Employed as a compatibilizer or toughness enhancer in epoxy, acrylic, or other polymer blends to tailor final material properties.
• Specialty Additives: Functions as a reactive diluent or carrier in advanced material systems, including composites and encapsulants.

Basic Information

Product Name	1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, polymer with α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)], 1,1'-methylenebis[4-isocyanatobenzene], methyloxirane and oxirane
CAS No.	69929-11-9
Molecular Formula	Complex Polymer - Contact for details
Molecular Weight	Variable (Polymer) - Contact for details
Synonyms	Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-propanediol, 2-ethyl-2-(hydroxymethyl)-, 1,1'-methylenebis[4-isocyanatobenzene], methyloxirane and oxirane; Trimethylolpropane ethoxylate, propoxylate, MDI-based polyurethane prepolymer; Polyether-polyurethane polyol based on TMP, EO/PO, and MDI; Reactive polyurethane polyol; MDI-terminated polyether polyol; CAS 69929-11-9.
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems to ensure batch-to-batch consistency. Key parameters such as hydroxyl value (OH#), isocyanate content (NCO%), viscosity, and moisture are rigorously monitored. Certificates of Analysis (COA) detailing all relevant specifications are provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). This material is moisture-sensitive (hygroscopic); ensure containers are sealed after use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Viscous liquid
Color (Gardner)	≤ 3
Hydroxyl Value (OH#)	Contact for details
Viscosity @ 25°C	Contact for details
Moisture (Karl Fischer)	≤ 0.05%
Isocyanate Content (NCO%)	Contact for details
Specific Gravity @ 25°C	Contact for details

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