Sarah Granzo

US Patent:

20040063816, Apr 1, 2004

Filed:

Oct 1, 2002

Appl. No.:

10/263439

Inventors:

Debora Bergstrom - Midland MI, US
Gary Burns - Midland MI, US
Sarah Granzo - Midland MI, US
Csilla Kollar - Midland MI, US
Clifford Reese - Midland MI, US

International Classification:

C08K009/06

US Classification:

523/212000

Abstract:

Treating compositions for application to particles of a filler consist of 5-95 percent by weight of a silicon atom containing hydrophobic-type treating agent, and 5-95 percent by weight of a silicon atom containing functional-type treating agent, based on the weight of the composition. Useful functional-type treating agents include bis(alkoxysilylalkyl)polysulfides and mercaptoorganosilicon compounds. Useful hydrophobic-type treating agents include polyorganohydrogensiloxanes and silanol terminated silicone oligomers. The filler most preferred is precipitated (i.e., synthetic) calcium carbonate.