Patents Represented by Attorney Doanld M. Sell

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  • Catalysts for the curing of a water-curable isocyanate-functional prepolymer
    Patent number: 4871845
    Abstract: New catalysts useful in the curing of a water-curable isocyanate-functional prepolymer are provided. The new catalyst is a new 2,2'-dimorpholinyldialkyl ether. The use of the improved catalyst provides prepolymer/catalyst premix compositions having equivalent or increased shelf stability and which, when water-cured, yield resins having superior early strenghts. A method of curing an isocyanate-functional prepolymer and articles useful as orthopedic bandages are also provided.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: October 3, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard S. Buckanin
  • Flame resistant ashaltic compositions
    Patent number: 4512806
    Abstract: Asphaltic materials (e.g., asphalt, bitumen, or pitch) are increased in flame-resistance and improved in other useful properties by use of a latent catalyst mixture which reacts upon heating to catalyze oxidation of the asphaltic material. The catalyst comprises halogenated organic compound which decomposes and releases halogen upon heating and an iron-containing compound adapted to react with the released halogen to form iron halide.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: April 23, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Joseph Graham