Selar® PT 4274 DuPont P&IP Polyethylene Terephthalate

Product Description

Selar® PT 4274 is a toughened homopolymer polyester resin in the high melt viscosity (HMV) series designed for thermoplastic processes. The HMV modification changes the rheology of the melt and provides better processibility in extrusion operations. It can be processed in conventional extruders designed for polyolefins or polyesters. This grade replaces Selar® PT 4234.

General

Material Status

Commercial: Active

Availability

North America

Features

Barrier Resin

Flavor & Aroma Barrier

Food Contact Acceptable

Good Heat Seal

High Viscosity

Moisture Barrier

Oxygen Barrier

Uses

Film

Sheet

Tubing

Agency Ratings

Processing Method

Extrusion

Physical	Nominal Value	Unit	Test Method
Density		g/cm³	ASTM D1505
Mechanical	Nominal Value	Unit	Test Method
Coefficient of Friction (vs. Metal - Dynamic)			ASTM D1894
Films	Nominal Value	Unit	Test Method
Secant Modulus			ASTM D882
MD		psi
TD		psi
Tensile Strength			ASTM D882
MD: Yield		psi
TD: Yield		psi
MD: Break		psi
TD: Break		psi
Tensile Elongation			ASTM D882
MD: Break		%
TD: Break		%
Oxygen Transmission Rate (1.0 mil)		cm³/100 in²/24 hr	ASTM D3985
Water Vapor Transmission Rate		g/100 in²/24 hr	ASTM F1249
Elmendorf Tear Strength			ASTM D1922
MD		lbf/in
TD		lbf/in
Graves Tear			ASTM D1004
MD, Unnotched		lbf/in
TD, unnotched		lbf/in
Heat Seal Strength
225°F		g/in
250°F		g/in
275°F		g/in
300°F		g/in
Spencer Impact		ft·lb/in	ASTM D3420
Thermal	Nominal Value	Unit	Test Method
Glass Transition Temperature (DSC)		°F	ASTM D3418
Peak Melting Temperature		°F	ASTM D3418
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Selar® PT 4274, Selar PT 4274, Selar® PT , Selar PT, SelarPT4274, SelarPT, PT 4274, PT4274, PT, 4274, Polyethylene Terephthalate, PET, Polyester, DuPont P&IP, PolyethyleneTerephthalate, 4274PT
Features
Features may also be described by the following terms: High Viscosity, Flavor & Aroma Barrier, Flavor Barrier, Aroma Barrier, Flavor and Aroma Barrier, Moisture Barrier, Oxygen Barrier, Good Heat Seal.
Uses
Uses may also be described by the following terms: Tubing, Tube.
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).

Extrusion	Nominal Value	Unit
Drying Temperature		°F
Drying Time		hr
Suggested Max Moisture		%
Melt Temperature		°F

Notes

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

Selar® PT 4274

Polyethylene Terephthalate

Supplied by DuPont Packaging & Industrial Polymers