JP-2024511283-A5 -

Dates

Publication Date

20260511

Application Date

20220224

Description

To address this objective, a hybrid resin composition for 3D printing of objects is provided, comprising polymerization components A, B, and C (and optionally D). The resin composition is A reactive diluent (RD), also called a reactive diluent, is a monofunctional photocurable component having formula (I), comprising a reactive species Y that readily undergoes radical polymerization or cationic polymerization, and a side group X, wherein component A forms a polymer skeleton upon photo-induced curing, and the skeleton preferably has a Tg of over 25°C, and component A, X-Y formula (I) Component B is at least one monofunctional or polyfunctional photocurable component that copolymerizes with component A via a corresponding curing mechanism, has a molecular weight greater than 500 gmol⁻¹ , functions as a toughness modifier (TNM), preferably has an elongation at break greater than 10%, and forms a polymerization network having a Tg greater than 0°C. The material comprises component C, which is at least one monofunctional or polyfunctional thermosetting component, preferably forming a second polymerization network having a Tg of over 100°C and functioning as a Tg enhancer ( Tg -enhancer, TGE), Optionally, a portion of the photocurable component B may be replaced by a photocurable crosslinking component D, also called a crosslinking agent (CA), which copolymerizes with components A and B via a corresponding curing mechanism to improve processability. The amount of photocurable component A is in the range of 5% to 80% by weight, based on the total weight of components A, B, and C; the amount of photocurable component B is in the range of 10% to 90% by weight; the amount of thermosetting component C is in the range of 1% to 50% by weight; and optionally, the amount of crosslinking component D is in the range of 3% to 70% by weight, based on the total weight of components B and D. Although some aspects of the present invention may overlap with other descriptions, they are shown below. However, the present invention is not limited to the following. [1] A hybrid resin composition for 3D printing of objects, comprising components A, B, and C, a) Component A is given by formula (I): X-Y formula (I) A monofunctional photocurable component comprising at least one reactant Y that readily undergoes radical polymerization or cationic polymerization, and a side group X, wherein component A forms a polymer skeleton upon photo-induced curing, and the skeleton preferably has a Tg of over 25°C. b) Component B is at least one monofunctional or polyfunctional photocurable component copolymerized with component A, having a molecular weight greater than 500 gmol⁻¹ , and component B preferably forms a polymerization network having a fracture elongation of more than 10% and a Tg greater than 0°C during photo-induced curing . c) Component C is at least one monofunctional or polyfunctional thermosetting component, preferably forming a second polymerization network having a Tg of over 100°C. A hybrid resin composition in which, based on the total weight of components A, B, and C, the amount of photocurable component A is in the range of 5% to 80% by weight, the amount of photocurable component B is in the range of 10% to 90% by weight, and the amount of thermosetting component C is in the range of 1% to 50% by weight. [2] The amount of the photocurable component A is in the range of 5% to 80% by weight, preferably 10% to 60% by weight, more preferably 15% to 55% by weight, and even more preferably 20% to 45% by weight, based on the total weight of components A, B, and C. The amount of the photocurable component B is in the range of 10% to 90% by weight, preferably 20% to 80% by weight, more preferably 25% to 70% by weight, and even more preferably 30% to 65% by weight, based on the total weight of components A, B, and C. The amount of the thermosetting component C is in the range of 1% to 50% by weight, preferably 2% to 40% by weight, more preferably 3% to 30% by weight, and even more preferably 5% to 25% by weight, based on the total weight of components A, B, and C. The resin composition according to [1], characterized in that... [3] Component B is partially substituted by crosslinking component D, which is at least one photocurable crosslinking agent (CA) copolymerized with component A and component B. The resin composition according to [1] or [2], characterized in that the amount of the crosslinking component D is in the range of 3% to 70% by weight, preferably 5% to 60% by weight, more preferably 7% to 50% by weight, and even more preferably 10% to 40% by weight, based on the total weight of component B and component D in the resin composition. [4] Component A is one or more compounds selected from the group consisting of monofunctional (meth)acrylates, (meth)acrylamides, vinyl esters and N-vinyl compounds, particularly isobornyl (meth)acrylate, cyclohexyl (meth)acrylate, trimethyl-cyclohexyl (meth)acrylate, glycerol formal (meth)acry