Showing papers by "Jun Hatakeyama published in 1990"

Method for the preparation of foamed and cured silicone rubber body

Abstract: An efficient method for the preparation of a foamed and cured silicone rubber body having a uniform fine-cellular structure, in which a foamable silicone rubber composition is prepared by uniformly compounding a diorganopolysiloxane, finely divided silica filler, titanium dioxide powder, blowing agent and curing agent, each in a specified weight proportion, and irradiating the thus prepared composition with microwaves having a frequency of 900 to 5000 MHz which, by virtue of the titanium dioxide powder having a high dielectric constant, are efficiently absorbed and converted to heat, whereby the composition is evenly heated throughout the body to cause uniform foaming and curing.

Method of adhering silicone rubber to a coated metal surface

Abstract: Silicone rubber is adhered to a metal surface by coating the metal surface with an organopolysiloxane adhesion improving agent of the formula: ##STR1## wherein R 1 is a monovalent organic radical of from 2 to 8 carbon atoms which contains an unsaturated bond, R 2 is a substituted or unsubstituted monovalent hydrocarbon radical of from 1 to 10 carbon atoms which contains no unsaturated bond, a is a number in the range of 1