Description

Poly(Propylene-Alt-Ethylene) Multi-Arm is a specialized polyolefin copolymer characterized by its unique multi-arm (star-shaped) architecture, synthesized via controlled polymerization techniques. This structural design imparts distinct rheological and mechanical properties, making it a valuable performance modifier in advanced polymer formulations. It is particularly sought after by industries requiring materials with enhanced melt strength, improved processability, and tailored compatibility in blends.

Application

• Polymer Modification & Compatibilization: Acts as a key additive to improve the compatibility and interfacial adhesion in polypropylene (PP) and polyethylene (PE) blends, reducing phase separation and enhancing final product properties.
• Adhesives & Sealants: Used as a tackifier and rheology modifier in hot-melt and pressure-sensitive adhesives (PSAs) to optimize viscosity, open time, and bond strength.
• Thermoplastic Elastomers (TPEs): Serves as a soft segment or modifier in TPE formulations to fine-tune flexibility, elasticity, and compression set resistance.
• Lubricant & Viscosity Index Improver: Employed in the formulation of high-performance lubricants and greases to control viscosity across a wide temperature range and improve shear stability.
• Packaging Films: Enhances the toughness, clarity, and sealability of co-extruded and multilayer packaging films, particularly those based on polyolefins.
• Wire & Cable Insulation: Improves the flexibility, environmental stress crack resistance (ESCR), and processing characteristics of polyolefin-based insulation and jacketing compounds.

Basic Information

Product Name	Poly(Propylene-Alt-Ethylene) Multi-Arm
CAS No.	127883-08-3
Molecular Formula	(C3H6.C2H4)x
Molecular Weight	Varies by grade (Typically 10,000 - 500,000 g/mol)
Synonyms	Propylene-Ethylene Alternating Copolymer, Multi-Arm; Star Poly(propylene-alt-ethylene); Poly(propylene-co-ethylene) Star Polymer; PP-alt-PE Multi-Arm Polymer; Olefin Copolymer, Multi-Branched; Propylene/Ethylene Alternating Copolymer, Branched
EINECS	Contact for details

Quality Control

Our Poly(Propylene-Alt-Ethylene) Multi-Arm is manufactured under a strict quality management system. Each batch is characterized using advanced analytical techniques including GPC/SEC, NMR, and DSC to ensure consistent molecular weight distribution, copolymer composition, and branching architecture. Certificates of Analysis (COA) detailing key 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 heat sources and open flames. For long-term storage, consider an inert atmosphere (nitrogen purge) to prevent potential oxidation.

Specification

Item	Specification
Appearance	White to off-white granules or powder
Identification (IR)	Conforms to structure
Ethylene Content (NMR)	40 - 60 mol%
Weight Average Molecular Weight (GPC)	50,000 - 200,000 g/mol
Polydispersity Index (PDI)	1.5 - 3.0
Melting Point (DSC)	60 - 120 °C
Arm Number (Approx.)	4 - 8
Ash Content	< 0.1 %

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