Patents by Inventor Wayne K. Larson

Wayne K. Larson 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: 6165239
    Abstract: The present invention relates to stable aqueous colloidal dipersions of sulfopolyureas and self supporting films formed from the dispersions which display good mechanical properties from about room temperature to temperatures exceeding 150.degree. C. The films of the invention, which are formed with no volatile organic compound (VOC) emissions and no post-coating chemical or ionic cross-linking, are not redispersible in water and may be used to form heat resistant abrasive articles.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: December 26, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Steven T. Hedrick, Howard S. Creel, Subramanian Krishnan, John J. Stofko, Wayne K. Larson
  • Patent number: 5929160
    Abstract: A method of decreasing the water uptake in a sulfopoly(ester-urethane) by preparing said sulfopoly(ester-urethane) from a chain extended sulfopolyester polyol which itself has been prepared in a two-step method, said sulfopoly(ester-urethane) comprising in its backbone at least one non-terminal arylene or alkylene group comprising a pendant sulfonic acid group or salt thereof, said sulfonic acid group or salt thereof having the formula ##STR1## wherein R is a trivalent aliphatic or aromatic group and M is a cation, said sulfonic acid group or salt thereof being bonded directly through said aliphatic or aromatic group to ester groups, the polymer of said sulfo(polyester-urethane) being terminated by at least one hydrolyzable silyl group,said two-step method for preparing said chain extended sulfopolyester polyol comprising the steps of:a) reacting a sulfopolycarboxylic acid or ester with a polyol to produce a sulfopolyester polyol,b) chain extending said sulfopolyester polyol by an esterification reaction with
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 27, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Larry R. Krepski, Steven M. Heilmann, Daniel E. Mickus, Wayne K. Larson
  • Patent number: 5756633
    Abstract: Water-dispersible sulfopoly(ester-urethane) compositions which comprise, in their backbone, at least one arylene or alkylene sulfonic acid group or a salt thereof, the polymer being terminated by at least one hydrolyzable silyl group. The compositions of the invention preferably have a sulfonate equivalent weight of about 500 to about 12,000 g/equivalent and a number average molecular weight less than 50,000. Compositions of the invention have utility as durable treatments such as low surface energy coatings that exhibit release towards adhesive materials, grease, and oils.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 5747626
    Abstract: A pavement marking composition comprises a sulfopoly(ester-urethane) polymer which comprises in its backbone at least one non-terminal arylene or alkylene group comprising a pendant sulfonic acid group or salt thereof, the polymer of said pavement marking composition being terminated by at least one hydrolyzable silyl group. A method of making the composition is disclosed. The pavement marking composition can further comprise at least one of pigments, optical elements, fillers, or other adjuvants. Particularly desirable adjuvants include optical elements, particularly retroreflective elements, skid-resistant particles, and pigments.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: May 5, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Larry R. Krepski, Steven M. Heilmann, Daniel E. Mickus, Wayne K. Larson, Mark T. Gibson, Mark D. Purgett, Christopher J. Rueb, Howell K. Smith, II
  • Patent number: 5679754
    Abstract: A water dispersible polymeric composition comprises at least one sulfo group containing segment, which group comprises at least one urethane or urea connecting group, said composition also comprising at least one hydrophobic segment, which segment comprises at least one urethane or urea connecting group. The composition when dried can provide a coating on a substrate or an article having low surface energy and preferably ink receptive properties. The article can provide release capabilities towards adhesives, particularly pressure sensitive adhesives.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: October 21, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne K. Larson, Richard E. Bennett, Nicole L. Franchina
  • Patent number: 5637368
    Abstract: An antistatic adhesive article which comprises an adhesive layer and utilizes vanadium oxide to impart antistatic properties to the article. The article is preferably an adhesive tape or sheet. The adhesive may be pressure sensitive or non-pressure sensitive. The vanadium oxide may be incorporated into or onto the tape from an aqueous dispersion.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: June 10, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David A. Cadalbert, Eric D. Morrison, Tamara L. Johnson, William L. Kausch, David R. Boston, Wayne K. Larson, Steven T. Hedrick
  • Patent number: 5468498
    Abstract: Aqueous-based mixtures comprising colloidal vanadium oxide and a dispersed sulfonated polymer impart antistatic properties to coatings on a substrate and to self-supporting articles. The preferred colloidal vanadium oxide is alkoxide derived and provides mixed valence vanadium oxide wherein the vanadium ions are typically +4 and +5. Preferred sulfopolymers include sulfopolyesters, sulfopolyurethanes, sulfopolyurethanes/ureas, sulfopolyester polyols, and sulfopolyols. Antistatic composite structures comprising colloidal vanadium oxide and a sulfopolymer are also disclosed.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: November 21, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric D. Morrison, David R. Boston, Steven T. Hedrick, William L. Kausch, Wayne K. Larson, Simon S. Fung
  • Patent number: 5445866
    Abstract: A transparent recording sheet coated with a transparent water-based image-receptive coating composition of (1) from about 5 parts by weight to about 95 parts by weight of an oligomer incorporating at least one addition product having at least two reactants wherein one reactant is 3-glycidoxypropylalkoxysilane and the second reactant is at least one secondary amine; (2) from about 5 parts by weight to 95 parts by weight of a colloidal dispersion; (3) optionally, one or more anti-blocking agents; and (4) optionally, one or more surfactants.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: August 29, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert E. Martinson, John J. Stofko, Manisha Sarkar, Steven T. Hedrick, Wayne K. Larson
  • Patent number: 5427835
    Abstract: Aqueous-based mixtures comprising colloidal vanadium oxide and a dispersed sulfonated polymer impart antistatic properties to coatings on a substrate and to self-supporting articles. The preferred colloidal vanadium oxide is alkoxide derived and provides mixed valence vanadium oxide wherein the vanadium ions are typically +4 and +5. Preferred sulfopolymers include sulfopolyesters, sulfopolyurethanes, sulfopolyurethanes/ureas, sulfopolyester polyols, and sulfopolyols. Antistatic composite structures comprising colloidal vanadium oxide and a sulfopolymer are also disclosed.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: June 27, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eric D. Morrison, David R. Boston, Steven T. Hedrick, William L. Kausch, Wayne K. Larson, Simon S. Fung
  • Patent number: 5203884
    Abstract: An abrasive article (i.e., a coated abrasive article or a three-dimensional, low density abrasive article) having a sufficient amount of vanadium oxide incorporated therein to provide having a reduced tendency to buildup static electricity during the abrading of a workpiece. Preferably, the abrasive article further comprises a compatible binder (preferably, a sulfonated polymer) to aid in securing the vanadium oxide to the abrasive article. In another aspect, a method of making the same is taught.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: April 20, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Scott J. Buchanan, Eric D. Morrison, David R. Boston, Steven T. Hedrick, William L. Kausch, Wayne K. Larson
  • Patent number: 4856502
    Abstract: The present invention relates to orthopedic casting materials having reduced tack and methods for preparing and using such orthopedic casting materials, wherein the materials comprise a nonwoven, stretchable fabric which is impregnated with a curable prepolymer resin. The nonwoven fabric comprises fiber bundles and apertures between the fiber bundles, with each of the fiber bundles comprising a plurality of fibers having interstices therebetween. The curable prepolymer resin is impregnated into the nonwoven fabric such that the interstices between the fibers receive the resin, while leaving the apertures between fiber bundles substantially unoccluded. Such orthopedic casting materials are relatively inexpensive and exhibit improved properties.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: August 15, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Dean A. Ersfeld, Paul E. Hansen, Matthew T. Scholz, Dennis C. Bartizal, Katherine E. Reed, Wayne K. Larson, Timothy C. Sandvig, Richard S. Buckanin
  • Patent number: 4855384
    Abstract: An isocyanate-terminated sulfocompound is the reaction product of a polyisocyanate and a sulfopolyol or sulfopolyamine which is the reaction product of one mole of a sulfodicarboxylic acid and about two moles of an aliphatic polyol or polyamine having two or more hydroxyl or amino groups attached to a linear chain and having a molecular weight of up to 2000. The sulfocompound can be reacted with ethylenically-unsaturated alcohols, water, polyamines, or polyols, to give ethylenically-unsaturated sulfocompounds, sulfopolyureas or sulfopolyurethanes.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: August 8, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 4746717
    Abstract: An isocyanate-terminated sulfocompound is the reaction product of a polyisocyanate and a sulfopolyol or sulfopolyamine which is the reaction product of one mole of a sulfodicarboxylic acid and about two moles of an aliphatic polyol or polyamine having two or more hydroxyl or amino groups attached to a linear chain and having a molecular weight of up to 2000. The sulfocompound can be reacted with ethylenically-unsaturated alcohols, water, polyamines, or polyols, to give ethylenically-unsaturated sulfocompounds, sulfopolyureas or sulfopolyurethanes.
    Type: Grant
    Filed: January 22, 1987
    Date of Patent: May 24, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 4738992
    Abstract: A water-absorbing sponge comprises at least one of a pendent sulfo-group containing polyurea and polyurethane, the polymer containing at least one sulfonate equivalent per 20,000 molecular weight units.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: April 19, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne K. Larson, Steven T. Hedrick
  • Patent number: 4667661
    Abstract: A curable resin coated sheet useful as an orthopedic bandage which has reduced tack is provided. The resin coated sheet is pre-lubricated with a lubricant which is (a) bonded to the resin, (b) added to the resin or applied to the surface of the coated sheet, or (c) a combination of (a) and (b). The lubricant is present in an amount to reduce the kinetic coefficient of friction of a surface of the coated sheet to less than 1.2.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: May 26, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Matthew T. Scholz, Dennis C. Bartizal, Katherine E. Reed, Wayne K. Larson, Dean A. Ersfeld, Timothy C. Sandvig, Richard S. Buckanin
  • Patent number: 4638017
    Abstract: A water-absorbing sponge comprises at least one of a sulfo- group containing polyurea and polyurethane, the polymer containing at least one sulfonate equivalent per 20,000 molecular weight units.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: January 20, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne K. Larson, Steven T. Hedrick
  • Patent number: 4558149
    Abstract: A low molecular weight, film-forming, polymerizable, ethylenically-unsaturated compound is water- and organic solvent-soluble (i.e., soluble in both water and organic solvents) but is readily converted on exposure to actinic radiation to a polymer that is solvent-insoluble (i.e., not soluble in water, organic solvents, or mixtures of water and organic solvents) and, in certain examples, is hydrophobic. The compound comprises the ethylenically-unsaturated derivative (i.e., an ester or an amide) of a sulfopolyol or sulfopolyamine having an ethylenic unsaturated functionality of 2 to 18 and an equivalent weight per ethylenic unsaturated functionality of less than 2500.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: December 10, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 4543315
    Abstract: A presensitized article having a radiation-sensitive layer comprising an adduct of an amorphous sulfopolyester and a diazonium resin is described which does not exhibit blocking on being stored in stacks for prolonged periods of time. The article can be exposed to radiation and developed via aqueous solvents to provide a lithographic plate that provides clean, scum-free copies, and that can be stored in a high humidity atmosphere without failure.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: September 24, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: William J. Lorenz, Wayne K. Larson
  • Patent number: 4480085
    Abstract: Amorphous sulfopolyesters which are the esterification product of glycols and dicarboxylic acids and, optionally, hydroxycarboxylic acids, of which at least about 35 mole percent are ortho-dicarboxylic acids.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: October 30, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Wayne K. Larson
  • Patent number: 4330588
    Abstract: Shaped polyester articles having their surfaces modified with a stain-releasing finish and a process for modifying those surfaces are disclosed. The process subjects the polyester to a water-dispellable non-crystalline polymeric compound in an aqueous swelling environment.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: May 18, 1982
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wayne K. Larson, Michael M. Lynn, E. Steven McAllister