Thermosetting compositions and forming three-dimensional objects therefrom
AssigneeStratasys, Inc.
InventorsPaulus Antonius Maria Steeman, Marco Marcus Matheus Driessen
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Abstract
Thermoset compositions and methods for forming three-dimensional articles via an additive fabrication process, and articles made therefrom are disclosed herein. In an embodiment, a composition comprises a first network-forming component comprising a TPA-based polyester comprising a backbone and having at least 2 polymerizable groups, one or more first network monomers, and a first network initiator. The backbone of the TPA-based polyester comprises the reaction product of a terephthalic acid and a polyol. The composition may further comprise a second network-forming component.
Claims23
A composition for forming a three-dimensional object via an additive fabrication process comprising:
- a) from 30 to 100 wt. %, based on the total weight of the composition, of a first network network forming component comprising:
- i) from 19.95 to 80 wt. %, based on the total weight of the first network-forming component, of a TPA-based polyester comprising a backbone and having a number average of at least 2 polymerizable groups, wherein the backbone comprises the reaction product of a terephthalic acid and a polyol, wherein the polymerizable groups comprise acrylate, methacrylate, epoxy, oxetane, hydroxyl, itaconate, vinyl ether, allyl ether, maleate, or fumarate, and wherein the TPA-based polyester has a number average molecular weight of from 800 to 10,000 g/mol and a Tg of at least 25° C.;
- ii) from 19.95 to 80 wt. %, based on the total weight of the network-forming component, of one or more first network monomers having a number average of 0.95 to 1.1 polymerizable groups that are able to (co)polymerize with the polymerizable groups of the TPA-based polyester, wherein a linear polymer formed from the one or more first network monomers has a Tg of at least 25° C.;
- iii) from 0.05 to 5 wt. %, based on the total weight of the first network-forming component, of one or more first network initiators capable of initiating the polymerization of the TPA-based polyester and the first network monomer;
- and
- iv) optionally, up to 15 wt. % of one or more further first network monomers, oligomers, or polymers having a number average of 2 or more polymerizable groups that are able to (co)polymerize with the polymerizable groups of the TPA-based polyester or the one or more first-network monomers;
- b) a non-particulate impact modifier.
A composition for forming a three-dimensional object via an additive fabrication process comprising:
- a) from 30 to 100 wt. %, based on the total weight of the composition, of a first network-forming component comprising:
- i) from 19.95 to 80 wt. %, based on the total weight of the first network-forming component, of a TPA-based polyester comprising a backbone and having a number average of at least 2 polymerizable groups, wherein the backbone comprises the reaction product of a terephthalic acid and a polyol, wherein the polymerizable groups comprise acrylate, methacrylate, epoxy, oxetane, hydroxyl, itaconate, vinyl ether, allyl ether, maleate, or fumarate, and wherein the TPA-based polyester has a number average molecular weight of from 800 to 10,000 g/mol and a Tg of at least 25° C.;
- ii) from 19.95 to 80 wt. %, based on the total weight of the network-forming component, of one or more first network monomers having a number average of 0.95 to 1.1 polymerizable groups that are able to (co)polymerize with the polymerizable groups of the TPA-based polyester, wherein a linear polymer formed from the one or more first network monomers has a Tg of at least 25° C.;
- iii) from 0.05 to 5 wt. %, based on the total weight of the first network-forming component, of one or more first network initiators capable of initiating the polymerization of the TPA-based polyester and the first network monomer;
- and
- iv) optionally, up to 15 wt. % of one or more further first network monomers, oligomers, or polymers having a number average of 2 or more polymerizable groups that are able to (co)polymerize with the polymerizable groups of the TPA-based polyester or the one or more first-network monomers;
- c) a particulate filler not possessing a surface functionality.
Dependencies are inferred from the claim text.