Ultraviolet curable silicone composition and cured product thereof

A method for forming a molded product from an ultraviolet curable silicone composition by inkjet methods using ink-jet 3D printers, comprising:

• ejecting the ultraviolet curable silicone composition via ink-jet ejection using the ink-jet 3D printer to produce the molded product,
• wherein the ultraviolet curable silicone composition is used as a 3D printer ink, the ultraviolet curable silicone composition comprising:
• (A) 100 parts by mass of an organopolysiloxane;
• (B) 0.1 to 10 parts by mass of a photopolymerization initiator;
• and
• 1 to 400 parts by mass of at least one of (C) a monofunctional (meth)acrylate compound having no siloxane structure and (D) a multifunctional (meth)acrylate compound having no siloxane structure, wherein the organopolysiloxane is represented by the following general formula (1):
• wherein n is a number satisfying 1≤n≤1,000, m is a number satisfying 1≤m≤1,000, siloxane units identified by n and m are sequenced in any order, Ar is an aromatic group, each R1 independently represents a monovalent hydrocarbon group having 1 to 20 carbon atoms, A is a group represented by the following formula (2):
• wherein p is a number satisfying 0≤p≤10, a is a number satisfying 1≤a≤3, each R1 independently represents an alkyl group having 1 to 10 carbon atoms, R2 represents an oxygen atom or an alkylene group, R3 represents an acryloyloxyalkyl group, a methacryloyloxyalkyl group, an acryloyloxyalkyloxy group or a methacryloyloxyalkyloxy group.

A method for applying an ultraviolet curable silicone composition to form a molded product by inkjet methods using ink-jet 3D printers, comprising:

• ejecting the ultraviolet curable silicone composition via ink-jet ejection using the ink-jet 3D printer to produce the molded product,
• wherein the ultraviolet curable silicone composition is used as a 3D printer ink, the ultraviolet curable silicone composition comprising:
• (A) 100 parts by mass of an organopolysiloxane;
• (B) 0.1 to 10 parts by mass of a photopolymerization initiator;
• and
• 1 to 400 parts by mass of at least one of (C) a monofunctional (meth)acrylate compound having no siloxane structure and (D) a multifunctional (meth)acrylate compound having no siloxane structure, wherein the organopolysiloxane is represented by the following general formula (1):
• wherein n is a number satisfying 1≤n≤1,000, m is a number satisfying 1≤m≤1,000, siloxane units identified by n and m are sequenced in any order, Ar is an aromatic group, each R1 independently represents a monovalent hydrocarbon group having 1 to 20 carbon atoms, A is a group represented by the following formula (2):
• wherein p is a number satisfying 0≤p≤10, a is a number satisfying 1≤a≤3, each R1 independently represents an alkyl group having 1 to 10 carbon atoms, R2 represents an oxygen atom or an alkylene group, R3 represents an acryloyloxyalkyl group, a methacryloyloxyalkyl group, an acryloyloxyalkyloxy group or a methacryloyloxyalkyloxy group.