Polybutene-1 PB 8640 LyondellBasell Polybutylene

Product Description

Polybutene-1 grade PB8640 is a random copolymer of butene-1 with low ethylene content. In blends with PE polymers, it forms a separate, but well-dispersed phase. Therefore, its primary use is as a minority blend component in the seal layer of easy-opening packaging films, produced by blown film extrusion. A typical PE blend partner for polybutene-1 grade PB8640 is any ethylene homopolymer or copolymer in the melt index range of 0.5 to 2.0 g/10min.
On the other hand, polybutene-1 is highly compatible with polypropylene due to its similar molecular structure, and it can be used to modify polypropylene sealing behaviour or mechanical properties such as impact.
Polybutene-1 crystallises slowly and is very shear sensitive in its flow behaviour. During conversion, it is more sensitive to orientation than most polyolefins (see the difference in properties of compression moulded versus injection moulded
specimens below).
Polybutene-1 grade PB8640 meets FDA requirements in 21 CFR 177.1570 for food contact applications up to 100°C (212°F).

General

Material Status

Commercial: Active

Availability

Africa & Middle East

Asia Pacific

Europe

Latin America

North America

Features

Dispersible

Food Contact Acceptable

Good Abrasion Resistance

Good Chemical Resistance

Good Flexibility

Good Toughness

Random Copolymer

Uses

Film

Food Packaging

Agency Ratings

Forms

Pellets

Processing Method

Blown Film

Physical	Nominal Value	Unit	Test Method
Density		g/cm³	ISO 1183/A, ASTM D1505
Melt Mass-Flow Rate (MFR)
--		g/10 min	ASTM D1238
190°C/2.16 kg		g/10 min	ISO 1133
230°C/2.16 kg		g/10 min	ISO 1133
Mechanical	Nominal Value	Unit	Test Method
Tensile Modulus
--		psi	ASTM D638
--		psi	ISO 527-2
Tensile Strength
Yield		psi	ASTM D638
Break		psi	ASTM D638
Break		psi	ISO 527-2
Tensile Elongation
Break, Compression Molded		%	ASTM D638
Break		%	ISO 527-2
Impact	Nominal Value	Unit	Test Method
Notched Izod Impact			ASTM D256
Hardness	Nominal Value	Unit	Test Method
Durometer Hardness (Shore D)			ASTM D2240
Thermal	Nominal Value	Unit	Test Method
Brittleness Temperature		°F	ASTM D746
Vicat Softening Temperature		°F	ISO 306/A
Melting Temperature		°F	DSC
Additional Information
Instrumented Falling Weight Impact Strength, ISO 6272, 20°C, Energy at Break, Method 306B: 35 J Instrumented Falling Weight Impact Strength, ISO 6272, 0°C, Energy at Break, Method 306B: 14 J Instrumented Falling Weight Impact Strength, ISO 6272, -20°C, Energy at Break, Method 306B: <5 J
Related Terminology
This supplier and product may also be known by these terms: LyondellBasell Industries, Lyondell, Basell, Bassell, Basell Polyolefins, Bassel Product names can be difficult to match. You may have searched any one of these terms to find this product: Polybutene-1 PB 8640, Polybutene1 PB 8640, Polybutene-1 , Polybutene1, Polybutene:1, Polybutene/1, Polybutene+1, Polybutene_1, Polybutene 1, Polybutene1PB8640, PB 8640, PB8640, Polybutylene, PB, LyondellBasell, 8640PB
Features
Features may also be described by the following terms: Good Abrasion Resistance, Abrasion Resistant, Good Chemical Resistance, Chemical Resistant, Good Flexibility, Flexible, Good Toughness, Tough, Random Copolymer.
Uses
Uses may also be described by the following terms: Food Packaging.
Agency Ratings
This plastic material has 1 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): FDA (1).

Notes

¹Typical properties: these are not to be construed as specifications.

Polybutene-1 PB 8640

Polybutylene

Supplied by LyondellBasell Industries