Initiator composition for polymerizing unsaturated monomers

US6087458A · kind A · utility

Assignee

• Dainippon Ink and Chemicals, Inc. · JP

Inventors

• Shin-ichi Nonaka · Berlin, DE
• Rainer B. Frings · Berlin, DE
• Carola Jaroszewski · Berlin, DE
• Gerwald Grahe · Berlin, DE

Key dates

• Filing date: Jan 30, 1998
• Grant date: Jul 11, 2000
• Expiry date: Jan 30, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F4/40
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An initiator composition for polymerizing unsaturated monomers, comprising a component (A) which is a mixture of PA1 i) at least one salt of a metal in the second sub-group of the periodic table, optionally in solution in an aromatic solvent or in an .alpha.,.beta.-unsaturated ester, and PA1 ii) at least one salt of a metal in the seventh and eighth sub-group of the periodic table, optionally in solution in an aromatic solvent or in an .alpha.,.beta.-unsaturated ester; and PA1 a component (B) which is at least one organic peroxy ester, wherein the components (A) and (B) are kept separate from one another until they are brought together to initiate polymerization of the unsaturated monomers. Also, polymerizable compositions containing the initiator composition together with polymerizable unsaturated monomers. The initiator composition can be used to homopolymerize and copolymerize various unsaturated monomers, such as methacrylic and acrylic acid esters, at lower temperatures.