Process for preparing AB diblock copolymers with a bimodally distributed A block

US8802785B2 · kind B2 · utility

Assignees

• Evonik Röhm GmbH · DE
• Henkel AG & Co. KGaA · DE

Inventors

• Holger Kautz · Hanau, DE
• Sven Balk · Frankfurt, DE
• Stephan Fengler · Frankfurt, DE
• Dorothea Staschik · Nidderau, DE
• Christine Miess · Alzenau, DE
• Lars Zander · Rommerskirchen, DE
• Jens Lueckert · Kohlenbissen, DE
• Johann Klein · Goldkronach, DE
• Thomas Moeller · Goldkronach, DE
• Volker Erb · Goldkronach, DE

Key dates

• Filing date: Oct 6, 2009
• Grant date: Aug 12, 2014
• Expiry date: Jul 7, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0625
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a controlled polymerization process for preparing (meth)acrylate-based AB diblock copolymers with a B block which has a narrow monomodal molecular weight distribution, and an A block which has a broad bimodal molecular weight distribution, and to the use thereof, for example, as a binder in adhesives or sealants.