POLISHING SUSPENSION Russian patent published in 2018 - IPC C09G1/02 B24B1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the chemical industry and can be used for processing optical materials. Polishing suspension contains an aqueous suspension of a polishing powder – polyrite, polyoxyalkylene glycol as a defoaming additive and zinc sulphate heptahydrate, which reduces the duration of treating optical blanks, with the following component ratio, wt%: zinc sulphate 0.5; polyoxyalkylene glycol 0.01–0.03; aqueous suspension of the polishing powder in the form of a 10 % suspension with a density of 1.02–1.04 g/cm³ – the balance.

EFFECT: reducing polishing time of optical blanks.

1 cl, 2 tbl