Description

Ethylene/Butylene Copolymer, Monohydroxy Terminated is a specialized thermoplastic elastomer (TPE) featuring a reactive hydroxyl (-OH) group at one polymer chain end. This unique terminal functionality makes it a valuable polymeric intermediate or modifier, enabling chemical grafting and compatibilization in advanced material formulations. It is primarily sought by manufacturers in the polymer, adhesive, sealant, and coating industries seeking to enhance flexibility, impact resistance, and adhesion properties.

Application

• As a polymeric chain extender or modifier in polyurethane (PU) and polyester systems.
• As a compatibilizer and impact modifier in polymer blends and composites.
• Key component in formulating hot-melt adhesives (HMAs) and pressure-sensitive adhesives (PSAs) for improved flexibility and low-temperature performance.
• Used in the production of thermoplastic polyolefin (TPO) elastomers and other engineered plastics.
• As a reactive intermediate for synthesizing block copolymers and graft polymers.
• Modifier for asphalt and bitumen to enhance elasticity and durability.
• Potential use in sealants and caulks to improve weatherability and adhesion.
• Additive in lubricants and coatings to modify rheological and film-forming properties.

Basic Information

Product Name	Ethylene/Butylene Copolymer, Monohydroxy Terminated
CAS No.	68954-09-6
Molecular Formula	(C2H4)x-(C4H8)y-OH
Molecular Weight	Variable (Typically 1,000 - 10,000 g/mol). Contact for details.
Synonyms	Hydroxyl-terminated Ethylene-Butylene Copolymer; EB Copolymer, OH-terminated; Poly(ethylene-co-butylene), monohydroxy terminated; Ethylene Butylene Rubber (EBR), hydroxyl functionalized; TPE-OH; SEBS-OH (related grade); Kraton® G (related commercial series); Poly(ethylene/butylene) glycol
EINECS	Contact for details.

Quality Control

Our Ethylene/Butylene Copolymer, Monohydroxy Terminated is manufactured under a strict quality management system. Each batch is characterized for critical parameters including hydroxyl value, molecular weight distribution, ethylene/butylene ratio, and thermal stability to ensure consistent performance as a polymeric building block. Certificates of Analysis (COA) detailing lot-specific specifications are available upon request.

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). Keep away from strong oxidizing agents and heat sources. For long-term storage, consider an inert atmosphere (nitrogen) to prevent potential oxidation.

Specification

Item	Specification
Appearance	White to off-white pellets or solid
Hydroxyl Value (mg KOH/g)	Contact for details
Ethylene Content	Contact for details
Number Average Molecular Weight (Mn)	Contact for details
Polydispersity Index (PDI)	Contact for details
Melting Point / Glass Transition Temp	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Moisture Content	≤ 0.5%

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