by SpecialChem

Makroblend® UT250 HR

Technical Datasheet | Supplied by Covestro

Makroblend® UT250 HR by Covestro is an impact-modified, polycarbonate (PC) and polyethylene terephthalate (PET) blend. It is suitable for processing by injection molding.

It exhibits improved hydrolysis resistance compared to standard Makroblend UT grades.
It exhibits high heat resistance, good chemical resistance to many lubricants, solvents, fuel, oils, hand creams, solvents, sweat and cleaning agents, reduced susceptibility to stress cracking, paintability, excellent dimensional stability, improved hydrolysis resistance and low moisture uptake.
It provides high toughness (even at low temperatures), exceptional impact strength, good flow and high rigidity.
Makroblend® UT250 HR is used in lead-acid battery housing applications.
It complies with UL 94 HB flame rating.

Makroblend® UT250 HR Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Melt Volume Flow Rate (MVR)

22 cm³/10 min

(At 260°C, 5 kg)

ISO 1133

Linear Mold Shrinkage, Flow

0.6 - 0.8 %

(At 600 bar)

ISO 2577

Water Absorption

0.16 %

(At 23°C, 50% RH, Equilibrium)

ISO 62

Injection Properties

Value & Unit

Test Condition

Test Method

Residual Humidity

< 0.01 %

Melt Temperature

260 - 280 °C

Barrel Rear Temperature

245 - 255 °C

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Makroblend® UT250 HR

Makroblend® UT250 HR Properties

Physical Properties

Makroblend® UT250 HR Processing Guidelines

Injection Properties