Minnesota Mining and Manufacturing Company

Other

Norman P Sweeny

Karl Friedrich Thom

David B Olson

Nusrallah Jubran

Roger A Mader

David R Boston

Daryle Hadley Busch

Jack W Charbonneau

Loren D Albin

Keith E Relyea

Jacqueline M Furlong

Wayne O Otteson

Donald D Buerkley

Robert J Lokken

William J Fraser

Wayne L Brustad

Derek R Callaby

Orville F Wienke

Daniel N Vivona

This invention concerns monosubstituted dithiooxamides, and a preferred class comprises those wherein the substituent is such that the resulting dithiooxamide derivative is substantially nonvolatile at about room temperature. Preferred materials are those for which when the monosubstituent dithiooxamide is complexed with a transition metal cation, the resulting polymer is substantially a dark, i.e., preferably blue or blue-black color. Carbonless paper constructions involving use of N-(monosubstituted)dithiooxamides to advantage are described.

Monosubstituted dithiooxamide compounds and their use

Cosmetic compositions are provided which have modifiable color characteristics. A single composition may be applied, and with the application of pressure, the color of the composition may be changed. The composition contains a first pigment and mircocapsules containing a second pigment. Upon rupture of the microcapsules, the coloration of the second pigment is added to the composition, altering its color characteristics.

Cosmetic colorant compositions

Microencapsulated materials are released by rupturing of an adhesive layer on a substrate containing the capsules.

Fragrance-releasing pull-apart sheet

An article comprises sheet material which may be printed and having an adherent coating of microscopic, rupturable capsules in a binder on at least one surface thereof, the article being capable of undergoing plastic deformation and exhibiting:

Stretchable microfragrance delivery article

Fragrance releasing appliques are provided which comprise a transparent or translucent substrate bearing microcapsules in a binder on one surface and an adhesive on the remaining surface.

Fragrance-releasing microcapsules on a see-through substrate

Carbonless imaging system containing transfer control agent to prevent undesirable back-transfer of image to transfer medium. The transfer control agent is selected from oxalic acid, phosphoric acid, or mixtures thereof. Transfer media and business forms are also described.

Carbonless imaging system

Color-forming precursor compositions comprising a metal-complexing compound having a plurality of ligand groups and color-activating compositions comprising transition metal salts of oleophilic, organic acids are combined to form dark, permanent images on substrates. The methods and compositions are particularly useful for providing permanent fingerprints and other dermographs.

Imaging compositions and methods

The disclosed compounds are adducts of imidazole or derivatives thereof and sulfur dioxide. The adducts are apparently of the Lewis acid-Lewis base type, and are useful as latent curing agents for epoxide resins. The adducts are prepared by interacting the imidazole and sulfur dioxide under anhydrous conditions. Equimolar imidazole--SO.sub.2 adducts can serve as a source of sulfur dioxide at room temperature.

Stabilized alpha-cyanoacrylate compositions

The disclosed compounds are adducts of imidazole or derivatives thereof and sulfur dioxide. The adducts are apparently of the Lewis acid-Lewis base type, and are useful as latent curing agents for epoxide resins. The adducts are prepared by interacting the imidazole and sulfur dioxide under anhydrous conditions. Equimolar imidazole-SO.sub.2 adducts can serve as a source of sulfur dioxide at room temperature.

Growing community of inventors

North Oaks, MN, United States of America

Norman P Sweeny