Description

1,3-Butanediol, Polymer With 1,3-Diisocyanatomethylbenzene And α-Hydro-ω-Hydroxypoly( Oxy-1,2-Ethanediyl) is a specialized polyurethane prepolymer or segmented copolymer, synthesized from key monomers including 1,3-butanediol, 1,3-diisocyanatomethylbenzene (meta-tetramethylxylene diisocyanate, m-TMXDI), and a polyethylene glycol (PEG) segment. This engineered polymer is valued for its unique balance of flexibility, hydrolytic stability, and biocompatibility derived from its chemical structure. It is primarily sought by formulators in the adhesives, sealants, coatings, and biomedical materials sectors who require high-performance, customizable polymer backbones.

Application

• High-Performance Polyurethane Adhesives & Sealants: Serves as a key prepolymer component for formulating flexible, durable, and moisture-curing adhesives with good adhesion to various substrates.
• Specialty Coatings and Elastomers: Used in the synthesis of coatings, cast elastomers, and thermoplastic polyurethanes (TPUs) that demand a combination of toughness, weatherability, and chemical resistance.
• Biomedical and Pharmaceutical Applications: The PEG (polyethylene glycol) segment imparts hydrophilicity and potential biocompatibility, making it suitable for research in drug delivery systems, hydrogel matrices, and medical device coatings.
• Reactive Resin Modifier: Acts as a polymeric polyol or chain extender to modify the hardness, flexibility, and processing characteristics of other polyurethane and polymer systems.
• Textile and Leather Finishing: Employed in the production of high-quality, flexible polyurethane binders and finishes for synthetic leather, waterproof fabrics, and functional textiles.

Basic Information

Product Name	1,3-Butanediol, Polymer With 1,3-Diisocyanatomethylbenzene And α-Hydro-ω-Hydroxypoly( Oxy-1,2-Ethanediyl)
CAS No.	125329-06-8
Molecular Formula	Typically represented as (C4H10O2.C10H10N2O2.C2nH4n+2On+1)x or similar polymeric notation. Contact for details.
Molecular Weight	Polymer - Variable (Depends on PEG chain length and degree of polymerization)
Synonyms	Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and 1,3-butanediol; PEG-m-TMXDI-1,3-Butanediol Copolymer; Polyethylene glycol copolymer with m-tetramethylxylene diisocyanate and 1,3-butanediol; Polyurethane prepolymer based on m-TMXDI, 1,3-BG, and PEG; m-TMXDI/PEG/1,3-Butanediol Adduct; Hydrophilic polyurethane prepolymer; Aliphatic polyether urethane polymer.
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict batch-to-batch consistency protocols. Quality is verified through parameters including NCO content (for prepolymer grades), hydroxyl value, viscosity, molecular weight distribution (GPC), and residual monomer levels. A comprehensive Certificate of Analysis (COA) detailing the specific grade's properties is provided with each shipment to ensure it meets your formulation requirements.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep containers tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and premature reaction. Isolate from strong oxidizers, acids, and bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
NCO Content (for prepolymer grades)	As per grade (e.g., 2-10%)
Hydroxyl Value	As per grade
Viscosity @ 25°C	Specified range
Moisture Content (Karl Fischer)	< 0.1%
Residual Monomer (GC)	< 0.5%

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