Minnesota Mining and Manufacturing Company

3m Innovative Properties Company

Steven T Hedrick

Wayne K Larson

Eric Daniel Morrison

William L Kausch

David R Boston

John J Stofko, Jr

Simon S Fung

Jeffrey T Anderson

Howard S Creel

Steven S Kantner

James G Carlson

Richard J Kuo

Manisha Sarkar

Scott J Buchanan

Carol-Lynn Spawn

Subramanian Krishnan

Robert E Martinson

Tamara L Johnson

David A Cadalbert

The present invention relates to stable colloidal dispersions of sulfonated polyurethane ureas and self-supporting films formed from these dispersions. After formation of the sulfonated polyurethane urea, alcohols can be added to the aqueous dispersion to provide a water-alcohol system. The films of the present invention are minimally tacky and self-adhesive.

Aqueous colloidal dispersions of sulfonated polyurethane ureas and products

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.

Aqueous sulfopolyurea colloidal dispersions, films and abrasive articles

Described are pigmented inks comprising a liquid medium, a pigment, and a polyurethane dispersant, the pigment being stabilized by the polyurethane dispersant, and the ink being suitable for use in an ink jet printer.

Ink jet ink containing polyurethane dispersant

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.

Adhesive tape having antistatic properties

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.

Sulfopolymer/vanadium oxide antistatic compositions

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.

Water-based transparent image recording sheet

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.

Abrasive article having vanadium oxide incorporated therein

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.

Hydrophilic polyurethane/polyurea sponge

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.

Growing community of inventors

Cottage Grove, MN, United States of America

Steven T Hedrick