THE TERM MAKING HAY WHILE the sun shines and similar expressions came up frequently at the 2nd Annual Chemical Industry Conference held at the Chemical Heritage Foundation in Philadelphia late last month. Representatives from eight major chemical companies—Praxair, Ashland, Cabot, Eastman Chemical, Lyondell Chemical, Hercules, DuPont, and Rohm and Haas—outlined their firms' virtues and admitted to faults they plan to correct. But most of all, they discussed plans to get as much profitable growth as possible out of the current economic expansion. Ricardo S. Malfitano, senior vice president of Praxair, said demand for hydrogen is now growing 20-25% per year, making hydrogen the company's fastest growing business. Consumption by refiners to upgrade fuel, oil, and bitumen is a primary driver in hydrogen demand, he said. To meet that demand, Praxair expects to announce that it will build at least one, if not two, new hydrogen plants before the end of this year. BUT MALFITANO noted ...