Description

1,3-Butanediol Polymer With 1,3-Diisocyanatemethylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly[Oxy(Methyl-1,2-Ethanediyl)] is a specialized polyurethane prepolymer or block copolymer, synthesized from 1,3-butanediol, 1,3-diisocyanatemethylbenzene (meta-tetramethylxylene diisocyanate, m-TMXDI), and a polyether polyol. This compound matters for its role as a high-performance building block in the formulation of advanced polyurethane systems, offering tailored properties such as flexibility, hydrolytic stability, and controlled reactivity. It is primarily needed by manufacturers in the adhesives, sealants, coatings, and elastomers industries seeking to enhance product durability and performance.

Application

• High-Performance Polyurethane Adhesives & Sealants: Serves as a key prepolymer component for formulating adhesives with excellent bond strength, flexibility, and resistance to moisture and chemicals.
• Specialty Coatings and Paints: Used in the synthesis of polyurethane resins for coatings that require superior weatherability, abrasion resistance, and gloss retention.
• Elastomers and Thermoplastic Polyurethanes (TPU): Acts as a chain extender or soft segment modifier to produce elastomers with specific mechanical properties, such as tensile strength and elasticity.
• Foam Systems: Can be utilized in the production of flexible or microcellular foams where controlled reactivity and specific physical properties are critical.
• Composite Materials: Employed as a matrix resin or modifier in composite materials to improve impact resistance and interfacial adhesion.
• Industrial and Automotive Parts: Found in the manufacture of gaskets, hoses, rollers, and other molded parts requiring durability and performance under stress.

Basic Information

Item	Detail
Product Name	1,3-Butanediol Polymer With 1,3-Diisocyanatemethylbenzene And .Alpha.-Hydro-.Omega.-Hydroxypoly[Oxy(Methyl-1,2-Ethanediyl)]
CAS No.	87911-91-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane prepolymer based on 1,3-butanediol and m-TMXDI; m-TMXDI/1,3-butanediol/poly(propylene glycol) copolymer; Poly(oxy(methyl-1,2-ethanediyl)), .alpha.-hydro-.omega.-hydroxy-, polymer with 1,3-butanediol and 1,3-diisocyanatomethylbenzene; Polyether-based polyurethane prepolymer; Meta-tetramethylxylene diisocyanate (m-TMXDI) polyurethane resin; Block copolymer of poly(propylene oxide), 1,3-butanediol, and 1,3-bis(isocyanatomethyl)benzene; 1,3-BD-m-TMXDI-PPG prepolymer
EINECS	Contact for details

Quality Control

Our 1,3-Butanediol Polymer undergoes rigorous quality testing to ensure batch-to-batch consistency and compliance with industry standards. Production is monitored against strict in-process controls for parameters such as isocyanate (NCO) content, viscosity, and residual monomer levels. A comprehensive Certificate of Analysis (COA) is provided with each shipment, detailing specifications and test results. We adhere to a quality management system and can support requirements for specific regulatory or customer-specific standards upon request.

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 product is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent premature reaction and viscosity increase. Keep away from heat, sparks, and open flame. Under recommended storage conditions, the product is typically stable.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details
Water Content	≤ 0.05%
Residual Monomer	≤ 0.1%

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