Search Results | Hagley Digital Archives

Title: Panel exposure room to test performance of pigments in indoor paints
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Panel exposure room tests performance of pigments in indoor paints in DuPont's sales service laboratory at Chestnut Run. Here technician is installing paint chips which later will be compared with identical control samples and evaluated for performance after exposure under controlled conditions.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2778
Collection: DuPont Product Information photographs

Title: Observing a catalytic reaction
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: The catalytic reaction being observed by this DuPont scientist is part of the Electrochemicals Department's long range research program. One dramatic result of this type of research was a new process for making vinyl acetate, a polymer intermediate important in the manufacture of polyvinyl acetate resin emulsion adhesives and paints.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2700
Collection: DuPont Product Information photographs

Title: Undergoing grease resistance tests
Date(s): 1938-02
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Lacquers and finishes undergo grease resistance tests in du Pont laboratories. The device illustrated subjects the film to a rubbing operation with a series of felt pads, kept saturated with fresh butter and other grease. Under varying degrees of pressure, these pads are stroked across the surface and the resistance to the action of the grease established.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2781
Collection: DuPont Product Information photographs

Title: Scientific color matching
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Physicist A. C. Webber studies a new model of a three dimensional transparent color system which makes it possible to identify colors by number. The model is made out of DuPont's Lucite acrylic resin. All colors that the eye can distinguish can be specified uniquely by use of the system. Many of the colors are illustrated by the plastic disks on the model.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2787
Collection: DuPont Product Information photographs

Title: A 'quartz fingernail' used to determine hardness of paint films
Date(s): 1930/1939, 1930, 1939
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A 'quartz fingernail' is used by DuPont chemists to determine how hard a paint film is. The device measures the weight necessary to drive the rounded end of a quartz rod a given distance into the film. In this manner the exact hardness of the paint is ascertained,
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2779
Collection: DuPont Product Information photographs

Title: Determining the degree of gloss
Date(s): 1938-02
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: To determine the degree of gloss in a lacquer or finish, du Pont chemists use a device that measures the amount of light reflected. The light from a constant source is thrown back from the panel into the telescope tube. One half of the 'eyepiece' is illuminated by this reflected radiation, with the other half lighted by a small bulb in the photometer tube attached to the side of the telescope. This light is passed back and forth in the tube until the brightness of the two section meet. The...
Show moreTo determine the degree of gloss in a lacquer or finish, du Pont chemists use a device that measures the amount of light reflected. The light from a constant source is thrown back from the panel into the telescope tube. One half of the 'eyepiece' is illuminated by this reflected radiation, with the other half lighted by a small bulb in the photometer tube attached to the side of the telescope. This light is passed back and forth in the tube until the brightness of the two section meet. The distance of the light from the 'eyepiece' is then a measure of the amount of light reflected or the gloss.
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Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2784
Collection: DuPont Product Information photographs

Title: Testing resin at Marshall Laboratory in Philadelphia, Pennsylvania
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: At DuPont, research is constantly being enlarged and broadened. Ideas for new products and new processes are always being studied in laboratories, such as the one shown here at Marshall Laboratory in Philadelphia, Pennsylvania. Here a scientist checks vacuum distillation equipment as he experiments with a potential new resin formula for paint.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2788
Collection: DuPont Product Information photographs

Title: Testing stencil paste
Date(s): 1930/1939, 1930, 1939
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A result of the testing of stencil paste in the control laboratory of the DuPont Philadelphia Paint Plant.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2785
Collection: DuPont Product Information photographs

Title: A 'quartz fingernail' used to determine hardness of paint films
Date(s): 1930/1939, 1930, 1939
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A 'quartz fingernail' is used by DuPont chemists to determine how hard a paint film is. The device measures the weight necessary to drive the rounded end of a quartz rod a given distance into the film. In this manner the exact hardness of the paint is ascertained, a close up of the 'fingernail' biting into the paint, at one of the DuPont laboratories.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2780
Collection: DuPont Product Information photographs