Patents Assigned to Industrial Sales and Factoring Corporation
  • Process for treating aldol-condensation polyol waste liquor
    Patent number: 4083931
    Abstract: A process for treating and recovering components from aldol-condensation polyol waste liquor containing sodium formate, water, polyol, and organic by-products comprising A. vacuum crystallizing and removing sodium formate; B. introducing methanol and sulfuric acid; C. distilling to remove and recover methyl formate; D. increasing the pH to about 6.5 to 7.0; E. cooling to precipitate Glauber's salt, polyol and organics; and F. adding water to dissolve and separate the Glauber's salt and recover substantially pure polyol and organics.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: April 11, 1978
    Assignee: Industrial Sales and Factoring Corporation
    Inventor: Fu-Ming Lee