Patents by Inventor Bernard D. Bauman

Bernard D. Bauman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Pretreatment of a reactor with alkali metal carbonate and bicarbonates to reduce wall fouling in vinyl chloride polymerization
    Patent number: 4224424
    Abstract: This invention relates to an improvement for reducing the amount of wall fouling in the suspension polymerization of vinyl chloride in stainless steel reactors. The improvement resides in wetting the reactor surface with a solution containing an alkali metal carbonate or alkali metal bicarbonate or both prior to charging the vinyl chloride recipe to the reactor. The alkaline material is included in a proportion which is effective for reducing wall fouling and typically this concentration is from about 1.25-25 percent for the carbonate and approximately 5-25 percent for the bicarbonate. Preferably, the surface of the reactor, after wetting, is heated to a temperature of about 40-100.degree. C. prior to charging the recipe.
    Type: Grant
    Filed: September 1, 1978
    Date of Patent: September 23, 1980
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Bernard D. Bauman