3m Innovative Properties Company

Chad D Mistele

Mario Alberto Perez

Bhaskar V Velamakanni

Mark E Napierala

James K Young

Nathan K Hagen

David R Hague

The present invention relates to a filler material useful for communication cables, such as electrical cables and optical cables. In one embodiment, (a) from about 50 to 95 percent by weight mineral oil; (b) less than about 10 percent by weight block copolymer selected from the group consisting of styrene-ethylene/butylene, styrene-ethylene/propylene, styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene/butylene-styrene, styrene-ethylene/propylene-styrene, and combinations thereof; (c) less than about 35 percent by weight petroleum wax; (d) less than about 20 percent by weight hollow glass microspheres; and (e) less than about 10 percent by weight thixotropic agent selected from the group consisting of clay, colloidal metal oxide, fumed metal oxide, and combinations thereof.

Filling materials

A curable composition for use as a sealant, in which the curable composition comprises a silicone fluid in an amount from about 80 wt % to about 90 wt %, a vinyl group containing polyorganosiloxane in an amount from about 10 wt % to about 20 wt %, a hydrogen containing polysiloxane in an amount from about 0.5 wt % to about 2.0 wt %, and a hydrosilation photocatalyst in an amount from about 5 ppm to about 100 ppm. The sealant cures in about 1 second to about 20 seconds during reaction of the vinyl group containing polydiorganosiloxane and the hydrogen containing polysiloxane, by exposure to ultraviolet radiation, in the presence of the hydrosilation photocatalyst. The sealant has an adhesion force to plastic from about 2.0 N/100 mm to about 4.0 N/100 mm.

Photocured silicone sealant having improved adhesion to plastic

Growing community of inventors

Alexandria, MN, United States of America

Chad D Mistele