Two-part curable liquid silicone composition

A two-part curable liquid silicone composition comprising a first liquid composition (I) comprising components (A), (C), and (E) described below and a second liquid composition (II) comprising components (A) (B), (C), and (D) described below, which yields upon mixing a curable liquid silicone composition comprising

• (A) 100 parts by weight of an alkenyl-substituted polyorganopolysiloxane having a viscosity at 25.degree. C. of 10 to 1,000,000 centipoise and containing at least 2 alkenyl groups in each molecule;
• (B) a hydrogen-substituted organopolysiloxane having a viscosity at 25.degree. C. of 1 to 10,000 centipoise and containing at least 2 silicon-bonded hydrogen atoms in each molecule, in an amount that provides 0.3 to 10 moles silicon-bonded hydrogen from component (B) per 1 mole alkenyl in component (A);
• (C) 2 to 50 parts by weight of an inorganic filler that has a specific surface area of 50 to 500 m.sup.2 /g;
• (D) 0.1 to 20 parts by weight of an alkoxy-substituted organopolysiloxane having a viscosity at 25.degree. C. of 1 to 2,000 centipoise and containing at least 2 silicon-bonded alkoxy groups in each molecule;
• and
• (E) platinum catalyst in a quantity sufficient to cure the curable liquid silicone composition;
• wherein the curable silicone composition that results when the first liquid composition (I) and the second liquid composition (II) are mixed, is thixotropic and has a viscosity, immediately upon mixing that is greater than the viscosity of the first liquid composition (I) and is greater than the viscosity of the second liquid composition (II);
• and
• wherein component (D) is a compound having the formula ##STR12## a compound having the formula ##STR13## a compound having the formula ##STR14## a compound having the formula ##STR15## or a compound having the formula ##STR16## wherein m and n are integers with a value of at least 1.