did a google search to see if i could come up with anything else:
* Ethylene oxide (EO) and ethylene oxide derivatives (OED) - As supply chains of raw materials have been disrupted and major detergent and cleaning product manufacturers have been doing their best to meet demand for disinfectants, cleaning products and paper diapers in earthquake-ravaged areas, a severe shortage has arisen in the production of such products among Japanese companies, prompting them to seek support from Taiwanese producers. ... However, Taiwanese manufacturers can only meet 60% of the increased demand.
*Dyestuffs and pigments are produced in Japan along with a range of other imaging chemicals such as waxes, resins, charge-control agents, and surfactants used to produce toners, inks, and parts critical to printers and copiers. Japan also manufactures many of the chemicals used in coatings and substrates for paper and media. In addition to manufacturing base chemicals, a number of companies also produce cartridge components and finished toners and inks.
*Of most concern is a likely shortage of bismaleimide triazine resin, which is used as an insulating material in a wide range of printed circuit boards and integrated-circuit substrates.
*Also out of commission are two facilities that together represent one-fourth of the world’s capacity for silicon wafers, the base material for semiconductor fabrication. Shin-Etsu Chemical says it doesn’t know when it will be able to restart its Shirakawa facility in Fukushima prefecture, a giant plant that produces about 20% of the world’s wafers.
*About 50 percent of the 300-millimeter silicon wafers -- the raw material for the most advanced computer chips -- is produced in Japan, according to Gartner, a technology research firm. The country also produces more than half of some key materials used in photolithography, the process that makes chips out of silicon.
*Japan also manufactures about 90 percent of an obscure chemical called bismaleimide triazine, which is crucial to the production of the latest microchips used in devices such as smartphones and laptops, said Klaus Rinnen, an analyst who covers semiconductor manufacturing at Gartner.
*Production of liquid-crystal displays is likely to be disrupted as well, according to the Taipei-based market research firm DisplaySearch. In a report, the firm observes that three Japanese companies—Mitsui Chemicals, Kanto Denka Kogyo, and Central Glass—account for roughly 30% of the world’s output of nitrogen trifluoride, a cleaning gas used in display manufacturing. Japanese production of the gas, which was already in tight supply before the quake, could be disrupted by irregular electricity output in Japan and by damage to a Kanto Denka plant, according to DisplaySearch.
*DisplaySearch also notes that indium tin oxide, a transparent conductor used in liquid-crystal displays, is made mostly in Japan. The world’s largest producer, JX Nikko, has stopped production at a plant located 50 miles from the troubled Fukushima nuclear reactors, DisplaySearch says.
* Japan is a key producer -- and in some cases the dominant one -- of many components at the heart of high-tech items such as PCs, smartphones and Apple's iPad. Production and distribution of many of those parts has been disrupted by the earthquake, tsunami, nuclear crisis and electrical blackouts that have roiled Japan since last week. Many parts for the iPad 2 -- including its battery, storage, memory and the glass for its touchscreen -- are made in Japan, according to iSuppli.
*A new report from the Wall St. Journal notes that Apple is experiencing shortages of the lithium-ion batteries used in its line of iPods. Going down the supply chain, Apple traced the shortage back to a Japanese chemical manufacturing company called Kureha Corp.