| abstract |
The present invention mixes and kneads a biodegradable polyester in a molten state, an emulsifier aqueous solution having a surface tension of 63 mN / m or less at 20 ° C. at a concentration of 63 mN / m, and other additives, if necessary, and has a solid content of 40% by weight or more. It is to provide a method for producing an aqueous dispersion of biodegradable polyester, characterized in that the viscosity is set at 1,000 mPa · s or higher at 占 폚. According to the present invention there is provided a process for the preparation of an aqueous dispersion of biodegradable polyester of high solids concentration and high viscosity which is very advantageous in practice. |