Patents by Inventor Eric E. Bancroft

Eric E. Bancroft 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).

  • Meta-halo-phenolic alkylation products and epoxy systems
    Patent number: 4731423
    Abstract: Titled materials and their preparation. The materials contain a moiety such as, for example, 4-oxy-3,5-dimethyl-2,6-dibromobenzyl which can impart a high degree of thermal and hydrolytic stability to the materials, for example, epoxy thermosets such as in electronic encapsulations. For example, when used in electronic encapsulation formulations, these materials can provide a substantial increase in electronic device reliability. Their preparation involves an alkylation of an aromatic ring, for example, such as a Friedel-Crafts alkylation with 4-bromomethyl-3,5-dibromo-2,6-dimethylphenol or with 4-hydroxymethyl-3,5-dibromo-2,6-dimethylphenol.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: March 15, 1988
    Assignee: The Dow Chemical Company
    Inventors: Abel Mendoza, Chun S. Wang, Eric E. Bancroft, David B. Fritz
  • Electrocatalytic method for producing dihydroxybenzophenones
    Patent number: 4624758
    Abstract: A method for producing dihydroxybenzophenones by the electrocatalytic oxidation of bis(4-hydroxyphenyl) methanes, or the quinone methide intermediate, with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ). Spent oxidant, in the form of DDQH.sub.2, may be recycled and electrochemically regenerated to active DDQ oxidant.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: November 25, 1986
    Assignee: The Dow Chemical Company
    Inventors: Zenon Lysenko, Eric E. Bancroft
  • Electrocatalytic method for producing quinone methides
    Patent number: 4624757
    Abstract: A method for producing quinone methides by the electrocatalytic oxidation of bis(4-hydroxyphenyl)methanes using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) as the oxidant. Spent oxidant, in the form of DDQH.sub.2, may be recycled and electrochemically regenerated to active DDQ oxidant.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: November 25, 1986
    Assignee: The Dow Chemical Company
    Inventors: Zenon Lysenko, Eric E. Bancroft
  • Electrolytic method for producing quinone methides
    Patent number: 4624759
    Abstract: A method for producing quinone methides by the electrolytic oxidation of bis(4-hydroxyphenyl)methanes at a potential of 1.1-1.5 V vs. SCE.
    Type: Grant
    Filed: January 6, 1986
    Date of Patent: November 25, 1986
    Assignee: The Dow Chemical Company
    Inventors: Zenon Lysenko, Eric E. Bancroft