NdBR wet masterbatch

US9758646B2 · kind B2 · utility

Assignee

• Arlanxeo Deutschland GmbH · DE

Inventors

• Heike Kloppenburg · Düsseldorf, DE
• Alex Lucassen · Borne, NL
• David Hardy · Fonsorbes, FR
• Thomas Gross · Wermelskirchen, DE
• Judy Elizabeth Douglas · Beaumont, US

Key dates

• Filing date: Oct 26, 2012
• Grant date: Sep 12, 2017
• Expiry date: Nov 18, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L91/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to an NdBR wet masterbatch comprising —neodymium-catalyzed polybutadienes having a high proportion of cis-1,4 units of >95% and a low proportion of 1,2-vinyl content of <1%, with narrow polydispersity of less than 3, with a Mooney viscosity (ML1+4 100° C.) between 30 and 90 MU, with a high linearity index (ratio of solution viscosity to Mooney viscosity) of 3 to 10 m Pas/MU and with a Mooney relaxation after 30 seconds of 2 to 12%, the latter being prepared by means of solution polymerization, —at least one carbon black, the carbon black having an iodine absorption number (ION) between 85 and 210 mg/g, measured to ASTM D1510-1304, and an oil absorption number (OAN) between 75 and 150 ml/100 g, measured to ASTM D2414, and —an oil.