AROMATIC POLYESTER-ETHER KETONES, COPOLYESTER-ETHER KETONES AND THE ENCAPSULATING METHOD THEREOF Russian patent published in 2019 - IPC B01J13/02 C08G65/40 

FIELD: technological processes.

SUBSTANCE: present invention relates to a method of producing encapsulated aromatic polyester-ether and copolyester-ether ketones. Described is a method of encapsulating aromatic polyester-ether ketones and copolyester-ether ketones obtained by synthesis of a mixture of components in ratio: 0.021–0.035 mol of diphenylol propane and 0.035 mol of 4,4'-difluorobenzophenone; or mixture of 0.021–0.035 mol of diphenylol propane, 0.035 mol of 4,4'-difluorobenzophenone and 0.00875–0.0105 mol of 4,4'-dioxydiphenyl; or mixture 0.014–0.035 mol of phenolphthalein and 0.035 mol of 4,4'-difluorobenzophenone; or mixture 0.014–0.035 mol of phenolphthalein, 0.00875–0.0105 mol of 4,4'-dioxydiphenyl and 0.035 mol of 4,4'-difluorobenzophenone; or mixture of 0.021–0.035 mol of diphenylol propane, 0.014–0.035 mol of phenolphthalein and 0.035 mol of 4,4'-difluorobenzophenone, wherein in each case in presence of 0.0455 mol of potassium carbonate, 90 ml of N,N-dimethylacetamide and 0.00764 g (0.1 wt% of weight 4,4'-fluorobenzophenone) of nanocarbon of GNC grade; method is characterized by that it is encapsulated by a continuous process by treating solutions of polyesters in a chlorinated organic solvent with an aqueous solution of gelatine, apple pectin or a mixture of gelatine, apple pectin and chloroform, wherein method comprises distillation at stepwise temperature rise from 20 to 65 °C and regeneration of a chlorinated organic solvent at temperatures of 55±5 °C, method comprises diluting reaction mixture with water at 40±5 °C, wherein the obtained material has a spherical shape with particle diameters of 27 to 165 mcm.

EFFECT: cost-effective method of producing encapsulated aromatic polyester-ether and copolyester-ether ketones, which are non-sticky, loose, do not release dust, easily processed by casting and extrusion, having higher bulk density.

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