Synthetic rubber is resilient
Article Abstract:
Single-site catalyst production is increasingly growing, but gas-phase processes for EPDM are barely surviving. For instance, while Wilmington, DE-based DuPont Dow's plan to produce the synthetic rubber EPDM using the single-catalyst technology materialized, Union Carbide Corp.'s plan has been temporary shelved due to plant shutdown. Bayer AG of Leverkusen, Germany, attribute the slow growth of gas-phase processes to under-development of the technology. According to Bayer, until such time that the technology is perfected, it will continue to use its a solution and suspension process in producing EPDM, which is a terpolymer of ethylene, propylene and dienes.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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Supercritical fluids stay solvent
Article Abstract:
An increasing number of new applications for supercritical fluids (SCFs) in the semiconductor, pharmaceutical, waste treatment and textile industries are being commercialized. This trend is driven further by restrictions on the usage of chemicals that adversely affect human health and the environment. While environmental issues remain as major factors in creating applications for SCFs, technological innovations are also playing key roles in drumming up interest in these fluids. Despite these developments, SCFs have yet to maximize demand for environment-friendly substances in other sectors of the chemical processes industries.
Comment:
New applications for supercritical fluids in semicon, pharmaceutical, waste treatment & textile inds are being commercialized
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 1998
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Pasteurization under pressure
Article Abstract:
High-pressure pasteurization is an alternative to the sterilization process, which is a standard in the food and beverage industry, that uses heat or radiation to kill deadly bacteria such as Salmonella and E coli. High-pressure pasteurization is a process that eliminates pathogens at ambient tempepratures. The process, therefore, has the ability to preserve the fresh taste of foods and to impart a unique texture to some prpoducts. The main factor that drives the use of high-pressure pasteurization is the fear of deadly pathogens which have been responsible for the death of 5,000 and the illness of 76 million in the US.
Publication Name: Chemical Engineering
Subject: Engineering and manufacturing industries
ISSN: 0009-2460
Year: 2000
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