| 摘要 |
PROBLEM TO BE SOLVED: To provide compositions having excellent green strength behavior without the need for expensive and complicated additives and mixtures.SOLUTION: The invention provides a moisture cure organosiloxane composition that comprises one or more components and has strength in an uncured state (commonly referred to in the industry as "green strength"), and its uses. The composition comprises an organopolysiloxane polymer having a viscosity of at least 1000 mPa s at the temperature of 25°C and comprising two or more silicon-bonded hydroxyl groups and/or silicon bonded hydrolyzable groups; a suitable catalyst; a cross-linker adapted to react with the organopolysiloxane polymer; and optionally one or more rheology modifiers and 0-10 wt.% of extenders or plasticizers. But in particular the composition contains a precipitated calcium carbonate filler in an amount of 50 to 70 wt.% of the total composition.SELECTED DRAWING: None |
