METHOD OF PRODUCING HEAT-RESISTANT AROMATIC POLYESTER ESTER- AND COPOLYESTER ETHER KETONES WITH IMPROVED PHYSICAL AND MECHANICAL PROPERTIES Russian patent published in 2019 - IPC B01J13/02 C08G65/40 

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of encapsulating heat-resistant aromatic polyester ether- and copolyester-ether ketones:

where I is diphenylol propane-based polyether ether ketone and 4,4'-difluorobenzophenone, number of monomer links "a" corresponds to 295–320, II – copolyester ether ketone based on diphenylol propane, 4,4'-dioxydiphenyl and 4,4'-difluorobenzophenone, number of monomer links "a" corresponds to 80–90, number of monomer links "b" corresponds to 190–195, III – phenolphthalein-based polyether ether ketone and 4,4'-difluorobenzophenone, number of monomer links "a" corresponds to 190–200, IV – copolyester ether ketone based on phenolphthalein, 4,4'-dioxydiphenyl and 4,4'-difluorobenzophenone, number of monomer links "a" corresponds to 45–53, number of monomer links "b" corresponds to 150–158, V – copolyester ether ketone based on diphenylol propane, phenolphthalein and 4,4'-difluorobenzophenone, wherein molar ratio of diols in copolyester ether ketones ranges from 0.1 to 0.4 and from 0.9 to 0.6, number of monomer links "a" corresponds to 135–142, number of monomer links "b" corresponds to 92–98, characterized by that encapsulation process is carried out in gelatin medium, apple pectin or gelatin mixture, apple pectin and chlorinated organic solvents, preferably in chloroform, wherein at stepwise temperature rise from 20 °C to 65 °C, distillation and regeneration of chlorinated organic solvent, at temperatures of 55±5 °C is used to dilute reaction mixture with warm water, wherein obtained capsules have spherical shape with particle diameter of 22–160 mcm.

EFFECT: obtaining encapsulated heat-resistant aromatic polyester ether- and copolyester ether ketones, which are non-sticky and having a higher bulk density compared to the initial polymers.

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