Preparation of low-viscosity polymers

US9580529B2 · kind B2 · utility

Assignee

• Evonik Oil Additives GmbH · DE

Inventors

• Sofia Sirak · Frankfurt, DE
• Christopher Paul Radano · West Chester, US

Key dates

• Filing date: Dec 19, 2013
• Grant date: Feb 28, 2017
• Expiry date: Dec 19, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2020/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for preparing a polymer composition, said method comprising the steps of: a) preparing a reaction mixture comprising as component A) an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers and as component B) a 1-alkene or a mixture of 1-alkenes; b) adding a Co(II) complex as a catalytic chain transfer agent to the reaction mixture; c) adding a radical initiator; and d) reacting the reaction mixture to obtain the polymer composition, wherein the total amount of the radical initiator added to the reaction mixture is at least 0.05% by weight relative to the total weight of components A) and B). The present invention also relates to the use of a Co(II) complex as catalytic chain transfer agent for the polymerization of a reaction mixture comprising an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers, a radical initiator, and a 1-alkene or a mixture of 1-alkenes, wherein the total amount of the radical initiator added to the reaction mixture is at least 0.05% by weight relative to the total weight of the ethylenically unsaturated monomer or mixture of ethylenically unsaturated …