Description

Polyoxy(Methyl-1,2-Ethanediyl), .Alpha.,.Alpha.,.Alpha.-1,2,3-Propanetriyltris.Omega.-Hydroxy-, Polymer With 1,1-Methylenebisisocyanatobenzene is a specialized polyether-polyurethane block copolymer, widely recognized for its excellent film-forming, adhesive, and elastomeric properties. This high-performance polymer is engineered to deliver superior durability, flexibility, and chemical resistance in demanding formulations. It is an essential raw material for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced material science applications.

Application

• High-Performance Coatings: Used as a key binder in industrial, protective, and specialty coatings requiring excellent weatherability and chemical resistance.
• Adhesives & Sealants: Serves as a primary component in formulating structural adhesives, pressure-sensitive adhesives (PSAs), and flexible sealants.
• Elastomers and Urethane Rubbers: A crucial precursor for manufacturing castable, thermoplastic, and millable polyurethane elastomers with tailored hardness and resilience.
• Composite Materials: Acts as a matrix or toughening agent in fiber-reinforced composites and other advanced material systems.
• Textile & Leather Finishing: Employed in coatings and finishes to impart durability, water repellency, and a soft hand feel.
• Encapsulation & Potting Compounds: Used in electronics and electrical applications for protecting components due to its good insulating and adhesive properties.

Basic Information

Product Name	Polyoxy(Methyl-1,2-Ethanediyl), .Alpha.,.Alpha.,.Alpha.-1,2,3-Propanetriyltris.Omega.-Hydroxy-, Polymer With 1,1-Methylenebisisocyanatobenzene
CAS No.	68877-65-6
Molecular Formula	Contact for details
Molecular Weight	Varies by grade (Polymer)
Synonyms	Poly(oxy(methyl-1,2-ethanediyl)), α,α',α''-1,2,3-propanetriyltris[ω-hydroxy-, polymer with 1,1'-methylenebis[4-isocyanatobenzene]
Polyoxy(methyl-1,2-ethanediyl), α,α',α''-1,2,3-propanetriyltris(ω-hydroxy-), polymer with 1,1'-methylenebis[4-isocyanatobenzene]
Poly(propylene glycol) tolylene diisocyanate polymer
PPG-TDI copolymer
Polyether urethane prepolymer
Poly(oxypropylene) triol-based polyurethane
Urethane polymer with polyoxypropylene triol
EINECS	Contact for details

Quality Control

Our production of this polyurethane polymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is characterized for critical parameters including hydroxyl value, isocyanate content, viscosity, and molecular weight distribution. Certificates of Analysis (COA) detailing these specifications are provided and available upon request, supporting compliance in regulated supply chains.

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). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed when not in use to prevent moisture absorption, which can affect product performance. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Hydroxyl Value (mg KOH/g)	Contact for details
Isocyanate Content (NCO %)	Contact for details
Viscosity @ 25°C (cP)	Contact for details
Specific Gravity @ 25°C	Contact for details
Moisture Content (KF)	< 0.1%

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