Patent ID: 11919844
Assignee: ORIENTAL UNION CHEMICAL CORP.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A method for fabricating polyols, comprising:
providing a high-activity double-metal-cyanide catalyst comprising at least one double-metal-cyanide compound and at least one organic complexing ligand including a fatty alcohol containing 2-7 carbon atoms and an alicyclic carbonate, wherein said alicyclic carbonate coordinates with said double-metal-cyanide compound, wherein a concentration of said fatty alcohol in said organic complexing ligand is 2-98 mole %, and wherein said alicyclic carbonate has a structural formula expressed by chemical formula (I):, wherein R and R′ are identical or different, and wherein each of R and R′ is selected from a group consisting of hydrogen atoms, saturated alkyl groups each containing 1-20 carbon atoms, cyclic alkyl groups, hydroxyl groups, and vinyl groups; and
polymerizing at least one alkylene oxide with at least one starter compound having active hydrogen to generate polyols in a polyaddition reaction,
wherein said high-activity double-metal-cyanide catalyst is without free alicyclic carbonate and therefore free alicyclic carbonate is absent in said polyaddition reaction.