摘要:
The invention relates to a method for preparing polyglycerol, comprising —providing a catalyst salt on a support, the catalyst salt having catalytic activity with respect to an etherification reaction of a polyol selected from the group of glycerol and oligoglycerols, —contacting the catalyst salt on the support with a fluid phase comprising a polyol selected from the group of glycerol and oligoglycerols, —and subjecting the polyol in the fluid phase to an etherification reaction in the presence of the catalyst salt, thereby forming the polyglycerol.
摘要:
This invention relates to N-alkyl-N'-poly(oxyalkyl)hexapyrimidine- quaternary ammonium salts of the formulae (la) - (lc) and mixtures thereof in which R 1 is C 8 -C 30 -alkyl or C 8 -C 30 -alkenyl, R 2 is hydrogen, C 1 -C 3 -alkyl, -COOH or a group selected from the formulae wherein the bonding occurs via the valence containing the B residue, B is a single bond or a C 1 to C 3 alkylene group R 3 is Ci-C4-alkyl, vinyl or allyl, X - is methylsulfate or iodide, A is a 1,2-alkylene group having from 2 to 10 carbon atoms, and p is a number from 1 to 50.