METHOD FOR MANUFACTURING (METH)ACRYLIC POLYMER

• Main Authors: FUJITA SUNAO, KATO YASUHISA, YOSHIHASHI KENICHI
• Format: Patent
• Language: English
• Published: 04.08.2011
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To solve the problems that a conventional living radically polymerizing method causes a long-hour induction period, can not make a structure regulation such as a molecular weight or a molecular weight distribution, or has not such a polymerization activity that allows to react until a higher monomer conversion, when a catalyst of zerovalent metal copper or of a copper compound in terms of a weight of copper atoms is used in an amount of 300 ppm or less relative to the whole weight of (meth)acrylic-based monomers to constitute the polymer. SOLUTION: This manufacturing method of a living radically polymerizing method for a (meth)acrylic-based monomer uses a reaction system in the presence of an organic halogen compound, a zero-valent metal copper, a monovalent copper compound, and a polyamine compound, wherein the zero-valent copper metal and the monovalent copper compound are combined in a molar ratio (the zero-valent copper metal/the monovalent copper compound) of 1-9. COPYRIGHT: (C)2011,JPO&INPIT