Munsell Color introduced plastic color standards in a variety of resins and textures to ensure design-to-production accuracy. The firm expanded its custom-color services because of the growing use of plastics and the need to offer standards in the media being colored. Munsell, in New Windsor, N.Y., is a business unit of Macbeth division of Kollmorgen Instruments Corp. Macbeth offers color measurement systems, densitometers and lighting.
Tel. (914) 565-7660 or fax (914) 565-0390.
Polyimide that is both moldable and soluble in organic solvents has been developed by the Japan Research Development Council in Saitama prefecture, Japan.
Although polyimide has properties that make it an attractive material for a wide range of products including copier bearings and automobile wheels, it cannot be easily injection molded or extruded. The conventional alternative is forming and processing using a costly powder sintering method.
The high expense of manufactured polyimide parts prompted research into the problem of increasing the thermoplasticity of polyimide. The original research was done several years ago by Toshio Imai and others at the Tokyo Institute of Technology. Following promising results by the research team, JRDC commissioned Shinnihon Rika Ltd. of Osaka, Japan, to commercialize the process.
After more than half a decade of development, the effort has borne fruit.
The new technology, which starts with O-xylene made from naphtha, diphenylsulfonetetra-carbonic acid made from sulfuric acid, and diamine, produces a polyimide with such high thermoplasticity and solubility that it can be injection molded and even dissolved in organic solvents and used as a varnish.
Tel. +81 (6) 203-3961 or fax +81 (6) 202-7784.
Eastman Chemical Co.'s Spectar copolymer provides durability, clarity and easy processing for the board surface for the Tivy game marketed by Tivy Academic Games Inc. of Oklahoma City, Okla.
Allen Extruders Inc. of Holland, Mich., extrudes heavy-gauge Spec-tar sheet, cuts it to board size and die punches it to accept numbered cubes that are part of the game. Kingsport, Tenn.-based Eastman said 30,000 Tivy games have been sold through mail order.