Patents by Inventor Wen Ten Tai

Wen Ten Tai 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).

  • Patent number: 4038318
    Abstract: Novel ionene polymers are formed by the mannich reaction of an aromatic molecule having an electron withdrawing group with a lower aliphatic aldehyde and a lower aliphatic secondary amine followed by polymerizing the manniched derivative by the use of chain extenders from the group of di-functional condensation monomers consisting of alkyl dihalides, epihalohydrins and 1,4-dihalobutene-2. Additionally, the polymers may be prepared by substituting some or all of the secondary amines above with a primary amine, and quaternizing the resultant polymers formed.The product of this invention have present utility as polymers useful for water clarification and as emulsion breakers for water-in-oil or oil-in-water emulsions.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: July 26, 1977
    Assignee: Nalco Chemical Company
    Inventor: Wen Ten Tai