Scratchable hiding layer-forming silicone composition

A hiding layer-forming silicone composition comprising

• a reaction product obtained by reacting 100 parts by weight of component (A) a linear diorganopolysiloxane comprising structural units of the following formula (1) and having an average degree of polymerization of at least 50,
• wherein R1 is a substituted or unsubstituted alkyl or aryl group having 1 to 20 carbon atoms, R2 is R1, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy group, each of R1 and R2 is identical or different, and O is shared between adjoining structural units to form a siloxane bond, said linear diorganopolysiloxane comprising 5 mol % or less of tri- and tetrafunctional structural units, with 10 to 200 parts by weight of a branched organopolysiloxane comprising structural units of the following formulae (2) and (3):
• (R1—)n(R2—)3−nSi—O— (2)
• wherein R1 and R2 are as defined above, each of R1 and R2 is identical or different, n is an integer of 1 to 3, and O is shared between adjoining structural units, said branched diorganopolysiloxane comprising 30 mol % or less of di- and trifunctional structural units, to form a siloxane bond in the presence of a basic catalyst,
• (C) 10 to 500 parts by weight of an inorganic powder opacifier per 100 parts by weight of components (A) and (B) combined, and
• (E) an organic solvent.

A substrate having an image thereon, wherein said image is coated with a scratchable hiding layer silicon film composition comprising

• (A) 100 parts by weight of a linear diorganopolysiloxane comprising structural units of the following formula (1) and having an average degree of polymerization of at least 50,
• wherein R1 is a substituted or unsubstituted alkyl or aryl group having 1 to 20 carbon atoms, R2 is R1, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy group, each of R1 and R2 is identical or different, and O is shared between adjoining structural units to form a siloxane bond, said linear diorganopolysiloxane comprising 5 mol % or less of tri- and tetrafunctional structural units,
• (B) 10 to 200 parts by weight of a branched organopolysiloxane comprising structural units of the following formulae (2) and (3):
• (R1—)n(R2—)3−nSi—O— (2)
• wherein R1 and R2 are as defined above, each of R1 and R2 is identical or different, n is an integer of 1 to 3, and 0 is shared between adjoining structural units to form a siloxane bond, said branched diorganopolysiloxane comprising 30 mol % or less of di- and trifunctional structural units,
• (C) 10 to 500 parts by weight of an inorganic powder opacifier per 100 parts by weight of components (A) and (B) combined,
• (D) an effective amount of a curing catalyst for causing components (A) and (B) to cure, and
• (B) an organic solvent.

A substrate having an image thereon, wherein said image is coated with a scratchable hiding layer silicon film composition comprising

• (F) a reaction product obtained by reacting 100 parts by weight of component (A) 100 parts by weight of a linear diorganopolysiloxane comprising structural units of the following formula (1) and having an average degree of polymerization of at least 50,
• wherein R1 is a substituted or unsubstituted alkyl or aryl group having 1 to 20 carbon atoms, R2 is R1, alkenyl, alkoxy, alkoxyalkoxy, hydroxyl or epoxy group, each of R1 and R2 is identical or different, and O is shared between adjoining structural units to form a siloxane bond, said linear diorganopolysiloxane comprising 5 mol % or less of tri- and tetrafunctional structural units, with 10 to 200 parts by weight of component (B) 10 to 200 parts by weight of a branched organopolysiloxane comprising structural units of the following formulae (2) and (3):
• (R1—)n(R2—)3−nSi—O— (2)
• wherein R1 and R2 are as defined above, each of R1 and R2 is identical or different, n is an integer of 1 to 3, and 0 is shared between adjoining structural units to form a siloxane bond, said branched diorganopolysiloxane comprising 30 mol % or less of di- and trifunctional structural units, in the presence of a basic catalyst,
• (C) 10 to 500 parts by weight of an inorganic powder opacifier per 100 parts by weight of components (A) and (B) combined, and
• (E) an organic solvent.