Water → Propylene glycol methyl ether acetate

Participants

Reaction Steps

IPA solution (500 g) of deionized water (27 g) was agitated with IPA solution (500 g) of a titanium tetraisopropoxide (284 g) and dropped at room temperature for 2 hours. 2-methyl-2,4-pentanediol (120 g) was added to a solution obtained and agitated at room temperature for 30 minutes. After the solution was concentrated under reduced pressure at 30° C., it was heated to 60° C. and heating was continued under reduced pressure to generate no distillate. Then, PGMEA (1,200 g) was added thereto and heated under reduced pressure at 40° C. until no BOH was distilled to obtain a PGMEA solution of a titanium-containing compound [B-II] (1,000 g) (compound concentration: 20%). The molecular weight (Mw) of the compound measured in terms of polystyrene was 1,100.

Provenance & Evidence