Phosphoric acid esters, their preparation and use
View Patent ↗The invention relates to phosphoric acid esters of polyether-modified alkyl alcohols, to their preparation and to a use of phosphoric acid esters of polyether-modified alkyl alcohols for generating shine on a surface.
1. A phosphoric acid ester of general formula 1 or its salt
where R 1 , R 2 , R 3 and R 4 are identical or different and are selected from R—O—(SO) a -(EO) b —(PO) c —(BO) d — and OH, where
EO=—CH 2 —CH 2 —O—,
PO=—CH(CH 3 )—CH 2 —O— and
BO=—CH(CH 2 CH 3 )—CH 2 —O— and
with the proviso that at least one of the radicals R 1 , R 2 , R 3 and R 4 is not OH,
where
a=2.2 to 10,
b=3 to 20,
c=0 to 10,
d=0 to 10, and
R is selected from branched or linear, saturated or unsaturated alkyl radicals having 8 to 20 carbon atoms.
2. The phosphoric acid ester or its salt according to claim 1 , wherein four of the radicals R 1 , R 2 , R 3 and R 4 are not OH.
3. The phosphoric acid ester or its salt according to claim 1 , wherein
a=2.5 to 5
b=8 to 12, and
c=d=0.
4. The phosphoric acid ester or its salt according to claim 1 , wherein R is selected from linear, saturated alkyl radicals having 8 to 16 carbon atoms.
5. A process for preparing phosphoric acid esters comprising:
providing a branched or linear, saturated or unsaturated alkyl alcohol having 8 to 20 carbon atoms,
reacting said alkyl alcohol with, based on the alkyl alcohol, 2.2 to 10 mol of styrene oxide at a temperature of 80 to 150° C. and a pressure of 0.4 to 1.2 bar,
reacting a first reaction product of said alkyl alcohol and said styrene oxide with, based on the alkyl alcohol, 3 to 20 mol of ethylene oxide at a temperature of 80 to 130° C. and a pressure of 0.5 to 6.0 bar, and
reacting a second reaction product of said alkyl alcohol, said styrene oxide and said ethylene oxide with, based on the alkyl alcohol, 0.1 to 1.0 mol of polyphosphoric acid P 4 O 10 at a temperature of 50 to 110° C. and a pressure of 0.4 to 1.2 bar.
6. The process according to claim 5 , wherein said process is carried out water-free.
7. The process according to claim 5 , wherein said process is carried out solvent-free.
8. A phosphoric acid ester prepared by a process according to claim 5 .
9. A formulation comprising at least one phosphoric acid ester of general formula 1
where R 1 , R 2 , R 3 and R 4 are identical or different and are selected from R—O—(SO) a -(EO) b —(PO) c —(BO) d — and OH, where
EO=—CH 2 —CH 2 —O—,
PO=—CH(CH 3 )—CH 2 —O— and
BO=—CH(CH 2 CH 3 )—CH 2 —O— and
with the proviso that at least one of the radicals R 1 , R 2 , R 3 and R 4 is not OH,
where
a=2.2 to 10,
b=3 to 20,
c=0 to 10,
d=0 to 10, and
R is selected from branched or linear, saturated or unsaturated alkyl radicals having 8 to 20 carbon atoms.