1
Maynard H Olson, John C Chang, Imelda A Muggli: Process for providing polyamide materials with stain resistance with sulfonated novolak resin and polymethacrylic acd. Minnesota Mining and Manufacturing Company, D M Sell, W N Truesdale C Kirn, April 18, 1989: US04822373 (79 worldwide citation)

A treated fibrous polyamide substrate having resistance to staining by acid colorants is provided. The treated substrate comprises a fibrous polyamide substrate having applied thereto (a) a partially sulfonated novolak resin and (b) polymethacrylic acid, copolymers of methacrylic acid, or combinatio ...


2
John C Chang, Maynard H Olson, Imelda A Muggli: Process for providing polyamide materials with stain resistance. Minnesota Mining and Manufacturing Company, Donald M Sell, Walter N Kirn, Carole Truesdale, June 26, 1990: US04937123 (69 worldwide citation)

A method for imparting to fibrous polyamide materials stain resistance to acid colorants is provided. The method comprises contacting the fibrous polyamide materials with an aqueous treating solution comprising polymethacrylic acid, copolymers of methacrylic acid, or combinations thereof, and drying ...


3
John C Chang: Fluorochemical biuret compositions and fibrous substrates treated therewith. Minnesota Mining and Manufacturing Company, D M Sell, J A Smith, C Truesdale, May 26, 1987: US04668406 (62 worldwide citation)

Fluorochemical biurets containing one or more monovalent fluoroaliphatic radicals having at least three fully fluorinated terminal carbon atoms and one or more biuret moieties, the radicals and moieties bonded together by hetero atom-containing or organic linking groups are provided. These fluoroche ...


4
John C Chang, Richard D Howells: Fluoroaliphatic radical-containing, substituted guanidines and fibrous substrates treated therewith. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Carole Truesdale, September 10, 1985: US04540497 (42 worldwide citation)

Novel fluoroaliphatic radical-containing, substituted guanidines useful in the form of organic solutions or aqueous dispersions in the treatment of fibrous substrates, such as textile fibers, to impart oil and water repellency.


5
George L Payet, John C Chang: Treating fibrous polyamide articles. Minnesota Mining and Manufacturing Company, D M Sell, W N Kirn, C Truesdale, October 24, 1989: US04875901 (40 worldwide citation)

A method for providing fibrous polyamide materials with stain resistance is provided. The method comprises contacting the fibrous polyamide materials with an aqueous solution comprising a normally solid, water-soluble, partially sulfonated novolak resin, which comprises the condensation product of a ...


6
John C Chang, Irvin F Dunsmore: Soil resistant curable laminate coating. 3M Innovative Properties Company, April 20, 2004: US06723438 (28 worldwide citation)

Protective overlays comprising an at least partially cured overlay thermosettable resin and a substituted polysiloxane. Method for forming a protective overlay on a substrate to protect the substrate comprising (a) providing a substrate having at least one surface, (b) applying to at least part of t ...


7
Stanley C Busman, John C Chang: Metal film imaging structure. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, Mark A Litman, April 16, 1985: US04511641 (23 worldwide citation)

An image-forming laminate is formed by the combination of a thin, frangible light opaque material on top of a photosensitive layer which changes its surfactant properties when irradiated. The photosensitive layer according to the present invention comprises a film-forming polymeric binder, a photose ...


8
John C Chang, Robert F Deutsch: Method for imparting soil and stain resistance to carpet. 3M Innovative Properties Company, Kent S Kokko, October 12, 2004: US06802870 (21 worldwide citation)

A solventless cleaning and treating composition for carpet is described. The composition comprises an aqueous solution of a stainblocking polymer, a silsesquioxane anti-soiling polymer, a surfactant and optionally a sequesting agent or salt.


9
Christopher C Olson, Ramesh C Kumar, John C Chang: Treated substrate having improved release properties. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, John A Fortkort, February 20, 1996: US05492599 (19 worldwide citation)

Treated cellulose-based substrate, e.g., paper, having improved release properties and methods of making such treated substrate are disclosed. The treated substrate is coated with a primer coating comprising a cationic polymer and with a release coating comprising a carboxy- or carboxylate-containin ...


10
John C Chang: Divalent metal salts of sulfonated novolak resins and methods for treating fibrous polyamide materials therewith. Gary L Griswold, Walter N Kirn, Carole Truesdale, March 24, 1992: US05098774 (16 worldwide citation)

Compositions comprising normally solid, water-soluble divalent metal salts of partially sulfonated novolak resins are provided. These divalent salts of partially sulfonated novolak resins ae useful for imparting to fibrous polyamide materials stain resistance to natural and synthetic acid colorants. ...