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Vyncolit® 4221XB

Technical Datasheet | Supplied by Sumitomo Bakelite

Vyncolit® 4221XB by Sumitomo Bakelite is a phenolic novolac resin reinforced with organic and mineral fillers. Possesses good mechanical, electrical and heat insulation properties. It is a perfluorooctansulfonate (PFOS) free grade. Designed for transfer, compression and injection molding applications. Vyncolit® 4221XB complies with RoHS2 (2011/65/EU), REACH/SVHC and European Directive 2006/122/EC.

Vyncolit® 4221XB Properties

Physical Properties

Value & Unit

Test Condition

Test Method

Specific Gravity

1.5 g/cm³

ISO 1183

Apparent Density

0.55 g/cm³

ISO 60

Linear Mold Shrinkage

0.57 %

ISO 2577

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