The invention concerns glass microbubbles having an inorganic thin-film coating not exceeding about 10 nm in thickness, especially a coating of a metal, a metalloid, or an alloy thereof. When dispersed throughout a matrix such as a polymer, the coated glass microbubbles can afford surprisingly good hiding power while also imparting esthetically pleasing colors to otherwise transparent articles.
申请公布号
DE3668160(D1)
申请公布日期
1990.02.15
申请号
DE19863668160
申请日期
1986.05.27
申请人
MINNESOTA MINING & MFG. CO., SAINT PAUL, MINN., US
发明人
CHAMBERLAIN, S., CRAIG;VESLEY, F., GEORGE;ZIMMERMAN, G., PATRICK;MCALLISTER, W., JEROME, SAINT PAUL, MN 55133-3427, US