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SANTOPRENE™ 121-40B260

Technical Datasheet | Supplied by Celanese

SANTOPRENE™ 121-40B260 by Celanese is a soft thermoplastic vulcanizate (TPV) with a low coefficient of friction. It has good bonding to TPV and EPDM rubber, in particular EPDM sponge profiles. Offers good flowability, easy processability and excellent surface aesthetics, without surface bleeding after heat aging. Designed for shorter processing cycle time compared to thermoset EPDM rubber. Suitable for processing by injection molding. It is recommended for soft corner molding and end caps of automotive dense and sponge weatherseals. SANTOPRENE™ 121-40B260 complies with RoHS.

SANTOPRENE™ 121-40B260 Properties

Mechanical Properties

Value & Unit

Test Condition

Test Method

Compression Set

37 %

(At 70°C, 22hr, Type 1)

ASTM D395B

Hardness, Shore A

(At 15 s, 23°C, 0.0787 in)

ISO 868

100% Modulus

1.10 MPa

(At 23°C, Across Flow)

ASTM D412

Injection Molding Properties

Value & Unit

Test Condition

Test Method

Drying Temperature

82 °C

Processing Temperature

175 - 230 °C

Drying Time

3.0 hr

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SANTOPRENE™ 121-40B260

SANTOPRENE™ 121-40B260 Properties

Mechanical Properties

SANTOPRENE™ 121-40B260 Processing Guidelines

Injection Molding Properties