The manner where the phenol stabilizer and the sulfur type stabilizer

摘要

PROBLEM TO BE SOLVED: To solve the problem that a high temperature and/or a long-time stirring are required to prepare the emulsion and/or dispersion of a phenol-based stabilizing agent of high melting point and also to improve the stability of the emulsion and/or dispersion left standing. ;SOLUTION: A method for preparing the emulsion and/or dispersion of a stabilizing agent in which a phenol-based stabilizing agent having its melting point of at least 90°C and a sulfur-based stabilizing agent or these stabilizing agents and water in at most half an amount (weight) of the phenol-based stabilizing agent are liquidized at a temperature of lower than the melting point of the phenol-based stabilizing agent, and then an emulsifier and/or a dispersant are combined. It is possible to liquidize the phenol-based stabilizing agent of high melting point at a temperature of lower than the melting point, and the preparations of the emulsion and/or dispersion of the stabilizing agent are possible at a comparatively low temperature. The emulsion and/or dispersion concerned are suitably used as a stabilizing agent for synthetic resins, particularly rubber-reinforced styrene-based resins.;COPYRIGHT: (C)2003,JPO