Description

Propylene-Butene Copolymer is a synthetic thermoplastic elastomer produced by the copolymerization of propylene and butene monomers. This material is valued for its excellent flexibility, low-temperature impact resistance, and good chemical stability, making it a versatile modifier and base polymer. It is primarily used in the plastics, adhesives, and sealants industries to enhance the performance of polyolefin blends, improve film properties, and formulate flexible compounds. Its balance of processability and mechanical properties offers significant advantages for manufacturers seeking to improve product durability and performance.

Application

• Plastic Modification: Used as an impact modifier and compatibilizer in polypropylene (PP) and polyethylene (PE) blends to improve toughness and low-temperature performance.
• Film Production: Employed in cast and blown films to enhance flexibility, tear resistance, and sealability, particularly for packaging applications.
• Adhesive & Sealant Formulations: Serves as a key polymer base in hot-melt adhesives (HMAs), pressure-sensitive adhesives (PSAs), and sealants, providing tack, cohesion, and elasticity.
• Wire & Cable Insulation: Used as a component in insulation and jacketing compounds to improve flexibility and environmental stress crack resistance (ESCR).
• Automotive Components: Incorporated into interior trim, bumper fascias, and under-hood parts to enhance impact resistance and durability.
• Consumer Goods: Utilized in the manufacture of flexible containers, household items, and soft-touch grips where a balance of softness and strength is required.
• Polymer Compounding: Acts as a processing aid and property enhancer in masterbatches and filled polymer compounds.

Basic Information

Product Name	Propylene-Butene Copolymer
CAS No.	9019-30-1
Molecular Formula	(C3H6)x.(C4H8)y
Molecular Weight	Variable (Typically 50,000 - 500,000 g/mol)
Synonyms	Poly(propylene-co-butene); Propene-Butene Copolymer; Butene-Propylene Copolymer; Poly(propylene-co-1-butene); PBR (Propylene Butene Rubber); Olefin Copolymer Elastomer; Thermoplastic Olefin (TPO); Polyolefin Elastomer (POE)
EINECS	Contact for details

Quality Control

Our Propylene-Butene Copolymer is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Production adheres to relevant ISO standards, and key parameters such as comonomer content, molecular weight distribution, and melt flow index are rigorously controlled. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance specifications is provided with each shipment to guarantee it meets your specific application requirements.

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/59-77°F). Keep away from heat sources, open flames, and strong oxidizing agents. For long-term storage, consider holding under an inert atmosphere to prevent oxidative degradation.

Specification

Item	Specification
Appearance	White to off-white pellets or granules
Butene Content	5 - 40 % (Typical)
Melt Flow Rate (MFR)	0.5 - 50 g/10 min (190°C/2.16 kg)
Density	0.86 - 0.90 g/cm³
Ash Content	< 0.1 %
Moisture Content	< 0.05 %
Volatiles	< 0.3 %

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