The following are new product introductions, compiled during the ACS Rubber Division Mini-Expo in Columbus, Ohio, Oct. 5-8.
Zeon Chemicals L.P.'s new Zetpol 3300 and 4300 low-temperature hydrogenated nitrile butadiene rubbers are fully saturated, giving the materials better high-temperature performance, ozone resistance and long-term compression characteristics, according to the company.
Zetpol 3300 and 4300, which contain 25 and 17 percent acrylonitrile rubber, respectively, are for applications ``where people need low-temperature performance but also the optimum in heat resistance,'' said Mark Jones, Zetpol applications team leader for Zeon. Jones delivered a paper at the meeting introducing the new grades.
This represents an expansion on low-temperature HNBR technology that Zeon first introduced in 2001, according to Jones. The new HNBRs predominately are for automotive and dynamic sealing applications, he said, ``where you require high- and low-temperature performance, as well as good ozone resistance.''
For more information about Zetpol 3300 and 4300 HNBRs, contact David Rosbottom at Zeon at 800-735-3388.
DuPont Co. officially introduced its new Vamac DHC ethylene acrylic elastomer at the meeting. The company also distributed literature about its ETPV engineering thermoplastic vulcanizates, although the ETPV materials won't be formally introduced until the K 2004 international trade fair, schduled for Oct. 20-27 in Dusseldorf, Germany.
Cured with peroxides, Vamac dipolymers don't require post-cure cycles, according to DuPont. Vamac DHC has improved cure characteristics and improved compression set over standard Vamac dipolymers, the company said, but has slightly lower heat age performance. It is well-suited to injection, transfer and compression molding as well as extrusion, and fills a wide range of automotive applications including powertrain seals and gaskets, O-rings, fuel and coolant hose coverings and spark plug boots.
DuPont ETPV thermoplastic vulcanizates are designed to deliver the high performance of many thermoset rubbers, but with much lower processing costs, according to the company. They are ideal for automotive applications including ignition coil boots, air brake hoses and fuel vent tubes.
For more information, contact DuPont Industrial Polymers at 800-438-7225, or consult the DuPont Web site at http://plastics.dupont.com.
Instron and its Shore Instruments subsidiary exhibited a full range of rubber testing instruments. These included the Instron 3345 tabletop material testing system-complete with load cell, pneumatic grips, elastomeric extensometer and Series IX/S Materials Testing Software-and the product line of Shore durometers including S1 Digital durometers, round-style durometers, quadrant-style durometers and pencil durometers.
Shore durometers are ``a lot more accurate that the other machines in the field,'' said Delroy Francis, head of the Shore Department at Instron. Shore durometers allow users to recall test data from a specific day or time and download them to a personal computer or printer, thus allowing a running tally of information from multiple tests.
For more information, visit www.instron.com or www.shoreinstruments.com.
Rohm and Haas Co. has established a new e-Center for its customers to obtain product data sheets, processing information and other data on the company's adhesives and sealants.
``One of the complaints we heard most often was that since Rohm and Haas was such a big company, it was hard to call up and get information,'' said Donald Branek, Rohm and Haas commercial manager for Transportation Adhesives. ``This e-Center has a whole bunch of information, and it's very user-friendly-you can go from page to page very easily.''
The e-center's address is http://asecenter.rohmhaas.com.