Search Results
- Title
- DuPont Chambers Works facilities at Deepwater Point, New Jersey
- Date(s)
- 1948-04-22
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator)
- Description
-
Image used in DuPont 'Better Living' employee magazine
- Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_3083
- Collection
- DuPont Company product information collection
- Title
- Miniature single cylinder paper machine
- Date(s)
- 1941
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator)
- Description
-
The box at the far right contains the coloring agent and the furnish, composed of either wood pulp or rag stock, depending upon the type and quality of paper desired. The subsequent option is comparable to that carried out in a paper mill resulting in the finished paper passing over a heated drum for drying,
- Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_3036
- Collection
- DuPont Company product information collection
- Title
- Weighing room at DuPont Technical Laboratory
- Date(s)
- 1941
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
- Description
-
Accuracy is extremely important in testing dyestuffs. Delicate balances are used, it being frequently necessary to weigh as little as 1 milligram of color. The DuPont Technical Laboratory is equipped with sensitive scientific balances, handled by trained operators to weigh out quantities of color used in making dyeings of prescribed strength on cotton, wool, rayon, acetate, nylon, silk, paper, leather etc.
- Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_3000
- Collection
- DuPont Company product information collection
- Title
- Reflux Units used in ascertaining the resistance of a brown dye to various metals
- Date(s)
- 1941
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
- Description
-
The equipment illustrated is typical of what the visitor will see in most research and application laboratories. Known as reflux units, they are used as testing instruments in ascertaining the resistance of a brown dye to various metals. Each flask contains a piece of metal and a prescribed quantity of dye in solution. After continuous boiling for a 24 hour period, the dye is carefully checked and tested, to determine what effect if any the metal may have had upon its shade, strength,...
Show moreThe equipment illustrated is typical of what the visitor will see in most research and application laboratories. Known as reflux units, they are used as testing instruments in ascertaining the resistance of a brown dye to various metals. Each flask contains a piece of metal and a prescribed quantity of dye in solution. After continuous boiling for a 24 hour period, the dye is carefully checked and tested, to determine what effect if any the metal may have had upon its shade, strength, physical composition or any other property essential to a satisfactory dying operation. Thus the user has predetermined information grading the characteristics of a color available to him.
Show less - Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_2999
- Collection
- DuPont Company product information collection
- Title
- Section of the vat color chemical control laboratory
- Date(s)
- 1941
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
- Description
-
This image shows a section of the vat color chemical control laboratory at the dye works. Vat colors are the fastest coloring agent known to modern science and are used on cotton, viscose process rayon and linen. In general, these colors are the fastest because of their inherent characteristics and the nature of their combination with the fibers colored. In themselves, vat dyes are outstanding in their resistance to such color destroying influences as light laundering, acids and alkalites....
Show moreThis image shows a section of the vat color chemical control laboratory at the dye works. Vat colors are the fastest coloring agent known to modern science and are used on cotton, viscose process rayon and linen. In general, these colors are the fastest because of their inherent characteristics and the nature of their combination with the fibers colored. In themselves, vat dyes are outstanding in their resistance to such color destroying influences as light laundering, acids and alkalites. They are insoluble in water and therefore cannot 'bleed'. When applied they are rendered soluble by chemical means, and this solution enters the fiber to be colored. The color is then oxidized with an oxidizing agent and the dye brought back to its original insoluble form. Thus, the dye become a permanent part of the fiber.
Show less - Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_3044
- Collection
- DuPont Company product information collection
- Title
- Camphor flaker at the camphor plant at Deepwater Point, New Jersey
- Date(s)
- 1941
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
- Description
-
This photograph shows a camphor flaker at the camphor plant of E.I. du Pont Nemours & Company at Deepwater Point NJ. At this plant camphor is manufactured for medical as well as industrial use. This latter is known as technical camphor. Technical camphor in flaked form is run from this machine directly into containers for shipment. Camphor was for centuries a natural monopoly. Chinese, visiting the Island of Formosa in 1421, found trees from the chips of which the natives distilled a white...
Show moreThis photograph shows a camphor flaker at the camphor plant of E.I. du Pont Nemours & Company at Deepwater Point NJ. At this plant camphor is manufactured for medical as well as industrial use. This latter is known as technical camphor. Technical camphor in flaked form is run from this machine directly into containers for shipment. Camphor was for centuries a natural monopoly. Chinese, visiting the Island of Formosa in 1421, found trees from the chips of which the natives distilled a white crystalline material of pleasing door. This material-camphor- was soon in demand throughout the then civilized world, chiefly as a medicine. The Chinese annexed Formosa and built up a monopoly on camphor which they maintained until 1895, when they lost the island to Japan. The growth of plastics manufacture resulted in the development of camphor as an important industrial commodity. This fact was thoroughly appreciated by the Japanese who controlled the world market and with it the price. Chemical research was directed to a method for the synthesis of this vital material. Within recent years, DuPont chemists have devised a successful process by which turpentine from southern pines is converted into camphor suitable for medical as well as industrial use.
Show less - Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_0530
- Collection
- DuPont Company product information collection
- Title
- Tanks used for the storage of raw materials at camphor plant
- Date(s)
- 1941-03-20
- Contributor(s)
- E.I. du Pont de Nemours & Company (originator)
- Description
-
Tanks used for the storage of raw materials at the camphor plant of the DuPont Company. The building in the background is the tetraethyl lead plant.
- Collection ID
- DuPont Company Product Information photographs (Accession 1972.341)
- Hagley ID
- 1972341_3695
- Collection
- DuPont Company product information collection