Process for producing aggregated latex particle
A coagulation gel and particle technology, which is applied in the field of preparation of coagulation latex particles, can solve the problems of latex liquid transferability deterioration, thermal stability decline, and increase in manufacturing costs, and achieve the effect of less fine powder and coarse particles and good powder characteristics
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Embodiment 1
[0078] To polymer latex A (100 parts by weight of polymer solid content), 1.5% by weight of sodium alginate (Algitex LL manufactured by Kimika Co., Ltd.) aqueous solution was added (the viscosity of the aqueous solution measured with a B-type viscometer was 120 mP.s), Furthermore, the solid content of sodium alginate was 0.4 parts by weight relative to 100 parts by weight of polymer solid content, and stirred and mixed for 3 minutes to obtain a mixed latex. Use one of the pressurized nozzles, a swirling cone nozzle, with a nozzle diameter of 0.6mm and a nozzle pressure of 3.7kg / cm 2, In a cylindrical device with a height of 5 m from the liquid surface at the bottom of the tower and a diameter of 60 cm, the mixed latex with a volume average droplet diameter of 200 μm is sprayed at a temperature of 25° C. At the same time, use a two-fluid nozzle to mix with air while spraying a 30% by weight calcium chloride aqueous solution with a droplet diameter of 0.1 to 10 μm so that the ca...
Embodiment 2
[0080] It implemented similarly to Example 1 except having changed the addition amount of sodium alginate into 0.01 weight part of solid content ratio with respect to 100 weight part of polymer solid content.
Embodiment 3
[0082] It implemented similarly to Example 1 except having changed the addition amount of sodium alginate into 1.8 weight part of solid content ratios with respect to 100 weight part of polymer solid content.
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