Ketalazation of the triacetylbenzene(1) with 2,2-dibromomethyl-1,3-propanediol by using 4-methyl-benzenesulfonic acid as catalyst,yielded 1,3,5-tri-(1-methyl-2,6-dioxaspiro-4,4-dibromomethyl-cyclohexyl)benzene(2),which reacted with 5,5-dimethyl-4,6-dioxa-1,3-cyclohexanedione in C2H5ONa giv-ing 1,3,5-tri-[7-(7-methyl-2,2-di-ethoxycarbonyl-6,8-dioxaspiro[3.

1,3,5-tri-(1-methyl-2,6-dioxaspiro-4,4-dibromomethylcyclohexyl)benzene(Ⅱ) was prepared by ketalazation of triacetyl benzene(Ⅰ)and 2,2-dibromomethyl-1,3-propanediol by p-methyl benzene sulfonic acid as catalyst.

The 5,5-Bis(bromomethyl)-2-hydroxy-2-oxo-1,3,2-dioxaphosphorine was prepared by dibromoneopentyl glycol and phosphorus pentoxide.

The properties of waterborne polyurethane modified by dibromoneopentyl glycol(DBNPG) have been studied.

Preparation and properties of maleopimaric neopentyl glycol ester polyol;

Preparation for neopentyl glycol/bentonite composite heat storage material;

Review for production processes of neopentyl glycol;

Study of heat reserve in the process of solid phase transition of The Pentaglycerine and neopentylglycols;

A gas chromatographic method was studied to determine the neopentylglycol reactant solution in the concentrated processes synthesized with sodium formate.

The organic/inorganic nanometer composite phase change heat storage materials of the bentonite/trihydroxy methyl propane (TMP) and bentonite/TMP + neopentylglycol (NPG) have been prepared with exchanged reaction, and characterized by XRD and DSC.