Antistatic or electrically conductive polymeric composition with reduced hysteresis

US12068087B2 · kind B2 · utility

Assignees

• Orion Engineered Carbons IP GmbH & Co. KG · DE
• ORION ENGINEERED CARBONS GMBH · DE

Inventors

• Hauke Westenberg · Cologne, DE
• Conny Vogler · Bornheim, DE
• Werner Niedermeier · Brauel, DE
• Florian Diehl · Neuss, DE
• Daniel Vorreiter · Ahrem, DE

Key dates

• Filing date: Aug 28, 2020
• Grant date: Aug 20, 2024
• Expiry date: Mar 5, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/202
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure provides polymeric compositions with balanced electrical and mechanical properties exhibiting reduced hysteresis comprising an electrically insulating polymeric material, a first carbon black material having a statistical thickness surface area (STSA) of below 70 m2/g and an oil absorption number (OAN) in the range from 70 to 150 mL/100 g, and a second carbon black material having a statistical thickness surface area (STSA) of at least 100 m2/g and an oil absorption number (OAN) of at least 150 mL/100 g, wherein both carbon black materials are included in an amount below its respective percolation threshold concentration, with the total amount of the first carbon black material and the second carbon black material being sufficient to render the polymeric composition antistatic or electrically conductive. The polymeric compositions exhibit balanced electrical and mechanical properties and a reduced hysteresis. The disclosure also relates to a process for preparing such antistatic or electrically conductive polymeric compositions and articles produced from such compositions.