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PLEXIGLAS® HT121

Technical Datasheet | Supplied by Trinseo

PLEXIGLAS® HT121 by Trinseo is a polymethyl methacrylate acrylic (PMMA) resin. It provides exceptional heat resistance in high temperature environments. This grade offers excellent weatherability & optical properties that allow it to excel in high temperature applications that require outdoor stability, high quality surface appearance and/or precision optics. It is processed by injection molding. PLEXIGLAS® HT121 is a perfect polymer for long-path length (LPL) applications in automotive lenses and accent signature lighting.

PLEXIGLAS® HT121 Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)

2.6 g/10 min

(At 230°C, 3.8 kg)

ASTM D1238

Specific Gravity

1.19

ASTM D792

Linear Mold Shrinkage

0.2 - 0.6 %

ASTM D955

Injection Molding Properties

Value & Unit

Test Condition

Test Method

Rear Temperature

218 - 241 °C

Center Temperature

229 - 243 °C

Front Temperature

238 - 252 °C

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PLEXIGLAS® HT121

PLEXIGLAS® HT121 Properties

Physical Properties

PLEXIGLAS® HT121 Processing Guidelines

Injection Molding Properties