Patents Represented by Attorney Robert R. Gavlik, Esq.

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  • Manufacture of trimethylolpropane
    Patent number: 5763690
    Abstract: Trimethylolpropane of high purity is efficiently made by mixing the aldol reaction product of formaldehyde and n-butyraldehyde with at least about 20 wt % of a lower alcohol prior to hydrogenation. The alcohol addition also promotes hydrogenolysis of by-product esters at pressures below 3000 psig and allows recovery of high purity product by simple distillation.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: June 9, 1998
    Assignee: Aristech Chemical Corporation
    Inventors: Jeffrey S. Salek, Joseph Pugach, Carole L. Elias, Leonard A. Cullo