Abstract: Silica and silicates having a water content of less than 0.5% by weight and specific surface areas of 25 to 300 (.+-. 25) m.sup.2 /g. by the BET procedure are employed as light fillers for the vulcanization of natural rubber and synthetic elastomers with or without counter pressure.
Type:
Grant
Filed:
January 26, 1976
Date of Patent:
November 22, 1977
Assignee:
Deutsche Gold- und Silber-Scheldeanstalt Vormals Roessler