Process for preparing polyols
Patent 4282387 Issued on August 4, 1981. Estimated Expiration Date: 
December 26, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 26, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2341565 2923690 2934505 3031439 3285968 3755197 InventorsApplicationNo. 06/107242 filed on 12/26/1979US Classes:568/618, Preparing from organic hydroxy containing compound (H of -OH may be replaced by a Group IA or IIA light metal)528/413, Material contains a Group IIA metal atom (Be, Mg, Ca, Sr, Ba, Ra)528/76, With ether or thioether compound containing at least two -C-X-C- groups568/589, Acyclic568/608, Ether oxygen bonded directly to a benzene ring568/619, From polyhydroxy containing compound568/620, And cyclic ether568/622, Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal)568/623, Polyhydroxy containing568/624Plural diverse oxyalkylene groups containingExaminersPrimary: Nielsen, EarlAttorney, Agent or FirmInternational ClassesC08G 18/48 (20060101)C08G 65/00 (20060101) C08G 18/00 (20060101) C08G 65/26 (20060101) AbstractThe invention describes an improved process for preparing polyols by reacting a mono-epoxy compound such as propylene oxide with a hydroxyl-containing initiator compound such as glycerine in the presence of a catalyst, the improvement being that the catalyst is added in the form of a calcium, strontium or barium salt of an organic acid such as acetic acid.Polyols prepared by this process can be employed to prepare polyurethanes without removing the catalyst.Other References
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