When n (NaOH) / n (MeCHO) =1 and n (MgO) / n (MeCHO) =0 1, the reaction gave pentaerythritol, dipentaerythritol and tripentaerythritol with the yields of 36 0%, 41 5% and 12 5% respectively, while only with n (NaOH) / n (MeCHO) =1 1 in the absence of MgO, their yields were 39 8%, 41 8% and 11 6% respectively.

The industry reagents of dipentaerythritol and tripentaerythritol were purified by recrystallization in water or by extracting several times with boiling water respectively.

Synthesis of pentaerythritol diacetals and diketals catalyzed by methanesulfonic acid;

Synthesis of star-shaped poly(p-dioxanone) by pentaerythritol;

Effect of 4A Zeolite on Property of Flame Retardant PP by Melamine Phosphate/Pentaerythritol;

The factors such as pH value,pressure and time in pressurized hydrolysis of pentaerythrite solution and pentaerythrite mother liquor are studied.

Bis(bromomethyl) 1,3 propanediol as a good reaction type fire retardant was synthesized by some processes such as replacement reaction, decompression separation, purification and drying from pentaerythrite and 40% hydrobromic acid solution in catalysis of glacial acetic acid, with a yield of 80.

The resin which was synthesized by the materials of hydroxy silicone oil, 1, 6-hexamethylene diisocyanate, tolylene diisocyanate, pentaerythritol triarylate and 2-hydroxy ethyl acrylate is able to cure rapidly at room temperature by UV.

Synthesis of pentaerythritol triacetate by vacuum liquid chromatography;