Printable silicone composition and methods for its preparation and use

A curable silicone composition comprises:

• (A) an aromatic compound having two alkenyl groups per molecule and a molecular weight less than 1,000 g/mol, in an amount of 10 parts by mass to 90 parts by mass, wherein the aromatic compound is selected from the group consisting of
• an organic compound of formula (A-I):
• R1-R2-R1,
• a siloxane oligomer of formula (A-II):
• and
• (A-III) a combination of both the organic compound of formula (A-I) and the siloxane oligomer of formula (A-II), where each R1 is an independently selected alkenyl group of 2 to 12 carbon atoms, each R2 is an arylene moiety of 6 to 20 carbon atoms, each R3 is independently selected from the group consisting of an alkyl group of 1 to 12 carbon atoms and an aryl group of 6 to 20 carbon atoms, with the proviso that 15 mole % to 50 mole % of all instances of R3 are aryl groups and 50 mole % to 85 mole % of all instances of R3 are alkyl groups;
• and subscript a is an integer with a value of 2 to 3;
• (B) an aromatic compound having two silicon bonded hydrogen atoms per molecule and a molecular weight less than 1,000 g/mol, in an amount of 90 parts by mass to 10 parts by mass;
• with the proviso that the amount of starting material (A) and the amount of starting material (B) combined=100 parts by mass;
• (C) an alkenyl functional polyorganosilicate resin in an amount of 10 parts by mass to 130 parts by mass, per 100 parts by mass of starting material (A) and starting material (B) combined;
• optionally (D) an alkenyl functional polydiorganosiloxane in an amount of 0 to 52.5 parts by mass, per 100 parts by mass of starting material (A) and starting material (B) combined;
• optionally (E) a reactive diluent comprising a hydrocarbon compound of 8 to 18 carbon atoms with at least one aliphatically unsaturated group per molecule, in an amount of 0 to 25 parts by mass of starting material (A) and starting material (B) combined;
• optionally (F) a polyorganohydrogensiloxane in an amount of 0 to 8 parts by mass, per 100 parts by mass of starting material (A) and starting material (B) combined;
• with the provisos that starting materials (A), (B), (C), (D), (E), and (F) are present in amounts sufficient to provide a molar ratio of silicon bonded hydrogen atoms/alkenyl groups (SiH/Vi ratio) of 0.5/1 to 2/1;
• an aryl content of 246 mmol/100 g to 450 mmol/100 g;
• (G) a hydrosilylation reaction catalyst in an amount sufficient to provide 0.1 ppm to 5,000 ppm by mass of a platinum group metal, based on combined amounts of starting materials (A), (B), (C), (D), (E), (F), (G) and (H);
• optionally (H) a hydrosilylation reaction inhibitor in an amount of 0 to 10,000 ppm by mass, based on combined amounts of starting materials (A), (B), (C), (D), (E), (F), (G) and (H).