Patents Represented by Attorney Glywnn R. Baker

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  • Preparation of water-absorbent articles
    Patent number: 3959569
    Abstract: Water-absorbent articles are prepared by contacting a fibrous material with a dry granular or powdered water-swellable gel and steaming the mixture. Adherence of the gel is improved by pretreatment of the fibrous base with a cationic polymer such as polyethylenimine. Fabrics or fluffs coated with particulate gels such as crosslinked partially hydrolyzed polyacrylamide are useful in various applications where it is desirable to hold or absorb an aqueous fluid in a particular location.
    Type: Grant
    Filed: August 2, 1974
    Date of Patent: May 25, 1976
    Assignee: The Dow Chemical Company
    Inventor: Nelson D. Burkholder, Jr.
  • Wood treating process
    Patent number: 3959529
    Abstract: A method for producing clean surface treated wood by subjecting the wood, containing the treating agent and its carrier, to steaming under pressure thereby to cause the solvent in the atmosphere about the wood to condense on the wood surface during the steaming, thereafter reducing the pressure to about atmospheric pressure, removing the carrier vapors from association with the wood as they form, and continuing the steaming until the carrier is substantially removed from the wood.
    Type: Grant
    Filed: June 14, 1974
    Date of Patent: May 25, 1976
    Assignee: The Dow Chemical Company
    Inventors: William D. Winn, Johnney T. Pollan
  • Heterocyclic peroxides
    Patent number: 3948907
    Abstract: Heterocyclic nitrogen-containing peroxides are prepared by reacting a tertiary alkyl hydroperoxide with a nitrogen heterocycle substituted cycloalkene such as 1-(4-morpholinyl)cyclohexene. The products are useful initiators of vinyl polymerization where a peroxide initiator of relatively high thermal stability is desirable.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: April 6, 1976
    Assignee: The Dow Chemical Company
    Inventor: Duane B. Priddy
  • Compositions for reflowing organic surfaces
    Patent number: 3933518
    Abstract: Compositions containing 80 to 90 percent by volume of chlorinated aliphatic hydrocarbons and 1 to 20 percent by volume of an alkylene glycol alkanoate or an alkylene glycol ether alkanoate have been found to be excellent for use in the vapor reflow of organic surfaces.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: January 20, 1976
    Assignee: The Dow Chemical Company
    Inventor: Thomas A. Vivian