Word: latex
(lookup in dictionary)
(lookup stats)
Dates: during 1930-1939
Sort By: most recent first
(reverse)
...older balloons were hand-fashioned sheets of rubber stock-a laborious task at best. The new balloons are made by a radically new process perfected by the research laboratories ol he Dewey and Almy Chemical Co. and known as the Kaysam Process. By it, virgin latex is cast to give a hollow ten-inch ball of rubber gel, which can then be expanded by air pressure into a four-foot balloon. After drying and curing it is ready...
Because of the peculiar physical properties of he latex rubber, the cured balloon can be expanded with a very slight pressure to at least 16 ft. in diameter before it bursts. In the expanded balloon the latex rubber is stretched so that its thickness is in the neighborhood of .00006 in. It is their ability to expand to such great size that makes these balloons so well-adapted to stratospheric work...
Last week a company called Parabond Corp. of America, in Cambridge, Mass., disclosed its novel solution, which has been adopted by Connecticut, Rhode Island, Massachusetts. Parabond is a rubber latex compound poured into the expansion joints, where it jells. To prevent the usual separation from the concrete, it has a strong adhesive mixture. To prevent bulging, it is thickly interlarded with puffed wheat. The porous globules of puffed wheat constitute bubbles in the mixture, permitting the latex to give without forming a ridge across the highway...
...company. Alert, ambitious, quick-thinking, he was soon moved up to the position of works manager and finally, in 1928, became president. Quiet, conservative Mr. Tew kept on living in comparative modesty at nearby Hudson where, always investigating new ways to make rubber, he used to putter with latex on the kitchen stove...
...years chemists tried to make synthetic rubber by picking latex apart, deciding what it was composed of, reassembling the elements. It might have been better to look for a compound which would serve the purpose of rubber rather than duplicate its composition. The synthetic rubber which grew out of the Nieuwland researches is 40% chlorine, not an ingredient of natural rubber at all. At a chemistry symposium in Rochester, during the winter of 1925, Father Nieuwland read a paper on the formation of divinyl acetylene from acetylene and cuprous ammonium chloride. Du Font's Dr. Elmer K. Bolton...