DISCOLORATION PREVENTIVE AGENT

PROBLEM TO BE SOLVED: To provide a discoloration preventive agent to be added to a polymerizable monomer or its partial polymer suitable for a wider range of applications such as an electronic material, a transparent member for use in a car, a transparent sheet member, a sticking agent, an adhesive, a super water-absorbent resin, ink, paint, a fiber, or a raw material of a modifier for paint, a resin or a fiber, by virtue of its preventing the discoloration of a polymerizable monomer caused by a polymerization inhibitor or an antioxidant added thereinto and by virtue of its preserving excellent transparency after its use. SOLUTION: At least one species of the compounds selected from the group consisting of an arylphosphine compound and a silazane compound is added to a composition comprising a polymerizable monomer or its partial polymer and an antioxidant or a polymerization inhibitor, in an amount, on an outer ratio basis, of 3 to 100 mass parts relative to 100 mass parts of the antioxidant or the polymerization inhibitor. COPYRIGHT: (C)2010,JPO&INPIT