The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The question of the supply of natural and synthetic rubber and their uses in electrical insulation continues to be an important one. In the country as a whole, the proportion of synthetic rubber used fell to about 42 per cent in 1947. About 80 per cent of the rubber used in electrical insulation was synthetic, since this material is preeminently adapted to this use. It would have been still greater...
1943 was marked In the rubber Industry by the growth of the supply of synthetic rubber and a sharp decrease in that of natural rubber. During the year, the use of natural rubber in electrical insulation was severely curtailed. This was accomplished by the limitation of the uses for natural rubber and by controlling its maximum content in insulating compounds. In the latter part of the year, the shift...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.