Method for manufacturing synthetic rubber latex
AssigneeZeon Corporation
InventorsJunji Kodemura, Yoshitaka Satoh
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Abstract
A method for producing a synthetic rubber, the method including: an emulsification step of continuously feeding a solution or a dispersion of a synthetic rubber obtained by dissolving or dispersing the synthetic rubber in an organic solvent and an aqueous solution of an emulsifier to a mixer and mixing to continuously obtain an emulsion; a first removal step of removing the organic solvent from the emulsion continuously obtained in the emulsification step in a container while the emulsion is continuously transferred to the container regulated to a pressure condition of 700 to 760 mmHg; and a second removal step of removing the organic solvent from the emulsion that has undergone the first removal step under a pressure of less than 700 mmHg.
Claims15
A method for producing a latex of a synthetic rubber, the method comprising:
- an emulsification step of continuously feeding a solution or a dispersion of a synthetic rubber obtained by dissolving or dispersing the synthetic rubber in an organic solvent and an aqueous solution of an emulsifier to a mixer and mixing to continuously obtain an emulsion;
- a first removal step of removing the organic solvent from the emulsion continuously obtained in the emulsification step in a container while the emulsion is continuously transferred to the container regulated to a pressure condition of 700 to 760 mmHg;
- and
- a second removal step of removing the organic solvent from the emulsion that has undergone the first removal step under a pressure of less than 700 mmHg,
- wherein in the first removal step, the organic solvent is removed while controlling a temperature of the emulsion to a temperature lower than a boiling point of the organic solvent, and
- in the first removal step, a rate of transferring the emulsion to the container (1/hr) as determined by dividing a rate of feeding the emulsion to the container (m3/hr) by a volume of the container (m3) is 0.1 to 0.5.
Dependencies are inferred from the claim text.