摘要 |
PCT No. PCT/EP94/00318 Sec. 371 Date Dec. 20, 1995 Sec. 102(e) Date Dec. 20, 1995 PCT Filed Feb. 3, 1994 PCT Pub. No. WO94/18259 PCT Pub. Date Aug. 18, 1994Disclosed herein is a process wherein glycerol, glycidol or 2,2-dimethyl-1,3-dioxolane-4-methanol is polymerized in the presence of an acid zeolite having an average pore size of at least 0.6 nanometer at 150 DEG -250 DEG C. At least 50 wt. % of cyclic polymers are obtained. |
申请人 |
UNICHEMA CHEMIE B.V., GOUDA, NL |
发明人 |
ESHUIS, JOHAN, JAN, W., NL-3123 PM SCHIEDAM, NL;LAAN, JOHANNES, ARIE, M., NL-4826 PN BREDA, NL;POTMAN, RONALD, PETER, NL-3123 CP SCHIEDAM, NL |