Orthodontic articles prepared using a polycarbonate diol, polymerizable compositions, and methods of making the articles

A method comprising:

• obtaining a photopolymerizable composition comprising:
• 30-65 parts by weight of monofunctional (meth)acrylate monomer(s) per 100 parts of the photopolymerizable composition,
• wherein the at least one monofunctional (meth)acrylate monomer is selected from a group comprising at least one of:
• a cycloaliphatic monofunctional (meth)acrylate, a tetrahydrofurfuryl methacrylate, a 2-phenoxyethyl methacrylate, a butyl methacrylate, a benzyl methacrylate, an n-propylmethacrylate, a tertiary butyl acrylate, or at least one combination thereof,
• wherein the group excludes isobornyl (meth)acrylate, and
• wherein a cured homopolymer of the at least one monofunctional (meth)acrylate monomer has a Tg of 30° C. or greater;
• and
• at least one urethane (meth)acrylate comprising polymerized units of an aliphatic polycarbonate diol;
• selectively curing the photopolymerizable composition;
• and
• repeating the obtaining and selectively curing steps to form multiple layers and create an orthodontic article.

A method comprising:

• receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying a plurality of layers of an orthodontic article;
• and
• generating, with the manufacturing device by an additive manufacturing process, the orthodontic article based on the digital object, the orthodontic article comprising a reaction product of a photopolymerizable composition, the photopolymerizable composition comprising a blend of:
• 30-65 parts by weight of monofunctional (meth)acrylate monomer(s) per 100 parts of the photopolymerizable composition,
• wherein the at least one monofunctional (meth)acrylate monomer is selected from a group comprising at least one of:
• a cycloaliphatic monofunctional (meth)acrylate, a tetrahydrofurfuryl methacrylate, a 2-phenoxyethyl methacrylate, a butyl methacrylate, a benzyl methacrylate, an n-propylmethacrylate, a tertiary butyl acrylate, or at least one combination thereof,
• wherein the group excludes isobornyl (meth)acrylate, and
• wherein a cured homopolymer of the at least one monofunctional (meth)acrylate monomer has a Tg of 30° C. or greater;
• and
• at least one urethane (meth)acrylate comprising polymerized units of an aliphatic polycarbonate diol.