Process for production of polyols with hydroxide containing double metal cyanide (DMC) catalysts
View Patent ↗The present invention provides process for producing polyols using a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II), M 1 x [M 2 (CN) 6 ] y OH.L (I) M 1 x [M 2 (CN) 6 ] y .zM 1 (OH) q .L (II) wherein M 1 represents a metal selected from Zn +2 , Fe +2 , Ni +2 , Mn +2 , Co +2 , Sn +2 , Pb +2 , Fe +3 , Mo +4 , Mo +6 , Al +3 , V +4 , V +5 , Sr +2 , W +4 , W +6 , Cu +2 and Cr +3 , M 2 represents a metal selected from Fe +2 , Fe +3 , Co +2 , Co +3 , Cr +2 , Cr +3 , Mn +2 , Mn +3 , Ir +3 , Ni +2 , Rh +3 , Ru +2 , V +4 and V +5 , L represents an organic ligand and x, y and q are chosen to maintain electroneutrality. The polyols of the present invention may find use in the preparation of polyurethanes.
1. In a process for the production of a polyol by polyaddition of an alkylene oxide to a starter compound containing active hydrogen atoms, the improvement comprising conducting the polyaddition in the presence of a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II),
M 1 x [M 2 (CN) 6 ] y OH.L (I)
M 1 x [M 2 (CN) 6 ] y .zM 1 (OH) q .L (II)
wherein
M 1 represents a metal selected from the group consisting of Zn +2 , Fe +2 , Ni +2 , Mn +2 , Co +2 , Sn +2 , Pb +2 , Fe +3 , Mo +4 , Mo +6 , Al +3 , V +4 , V +5 , Sr +2 , W +4 , W +6 , Cu +2 and Cr +3 ,
M 2 represents a metal selected from the group consisting of Fe +2 , Fe +3 , Co +2 , Co +3 , Cr +2 , Cr +3 , Mn +2 , Mn +3 , Ir +3 , Ni +2 , Rh +3 , Ru +2 , V +4 and V +5 ,
L represents an organic ligand, and
x, y and q are chosen to maintain electroneutrality.
2. The process according to claim 1 , wherein the organic ligand, L, is selected from the group consisting of alcohols, aldehydes, ketones, ethers, esters, amides, ureas, nitriles, sulfides and mixtures thereof.
3. The process according to claim 1 , wherein the organic ligand, L, is selected from the group consisting of ethanol, isopropanol, n-butanol, isobutanol, sec-butanol and tert-butanol.
4. The process according to claim 1 , wherein M 1 represents Zn +2 and M 2 represents Co +3 .
5. In a process for the production of a polyol by polyaddition of an alkylene oxide to a starter compound containing active hydrogen atoms, the improvement comprising conducting the polyaddition in the presence of a crystalline, hydroxide containing double metal cyanide (DMC) catalyst of the formulae (I) or (II),
M 1 x [M 2 (CN) 6 ] y OH.L (I)
M 1 x [M 2 (CN) 6 ] y .zM 1 (OH) q .L (II)
wherein
M 1 represents a metal selected from the group consisting of Zn +2 , Fe +2 , Ni +2 , Mn +2 , Co +2 , Sn +2 , Pb +2 , Fe +3 , Mo +4 , Mo +6 , Al +3 , V +4 , V +5 , Sr +2 , W +4 , W +6 , Cu +2 and Cr +3 ,
M 2 represents a metal selected from the group consisting of Fe +2 , Fe +3 , Co +2 , Co +3 , Cr +2 , Cr +3 , Mn +2 , Mn +3 , Ir +3 , Ni +2 , Rh +3 , Ru +2 , V +4 and V +5 ,
L represents an organic ligand, and
x, y and q are chosen to maintain electroneutrality,
the catalyst produced by,
reacting a M 1 containing oxide with a M 2 containing hexacyanometallate or hexacyanometallic acid in the presence of an organic ligand, L, and water; and
collecting the crystalline catalyst.
6. The process according to claim 5 , wherein the organic ligand, L, is selected from the group consisting of alcohols, aldehydes, ketones, ethers, esters, amides, ureas, nitriles, sulfides and mixtures thereof.
7. The process according to claim 5 , wherein the organic ligand, L, is selected from the group consisting of ethanol, isopropanol, n-butanol, isobutanol, sec-butanol and tert-butanol.
8. The process according to claim 5 , wherein M 1 represents Zn +2 and M 2 represents Co +3 .