	US 11,999,861 B2
	Thermosetting compositions and forming three-dimensionalobjects therefrom
Paulus Antonius Maria Steeman, Echt (NL); and Marco Marcus Matheus Driessen, Echt (NL)
Assigned to Stratasys, Inc., Eden Prairie, MN (US)
Filed by STRATASYS INC., Eden Prairie, MN (US)
Filed on Aug. 4, 2022, as Appl. No. 17/881,097.
Application 17/881,097 is a continuation of application No. 16/344,488, granted, now 11,485,865, previously published as PCT/EP2017/077782, filed on Oct. 30, 2017.
Claims priority of application No. 16196334 (EP), filed on Oct. 28, 2016; and application No. 16196338 (EP), filed on Oct. 28, 2016.
Prior Publication US 2023/0056681 A1, Feb. 23, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 11/10 (2014.01); B29C 64/124 (2017.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08F 290/06 (2006.01); C09D 11/101 (2014.01); C09D 11/102 (2014.01); C09D 11/104 (2014.01); C09D 11/107 (2014.01); C09D 11/30 (2014.01); B29C 64/153 (2017.01); B33Y 70/10 (2020.01); G03F 7/038 (2006.01)

CPC C09D 11/101 (2013.01) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08F 290/061 (2013.01); C08F 290/064 (2013.01); C09D 11/102 (2013.01); C09D 11/104 (2013.01); C09D 11/107 (2013.01); C09D 11/30 (2013.01); B29C 64/153 (2017.08); B33Y 70/10 (2020.01); G03F 7/0388 (2013.01)]

15 Claims

1. 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 one or more polyacids including 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 10000 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.; and

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

b. a second network-forming component comprising one or more second network compounds comprising polymerizable groups that do not (co)polymerize with the polymerizable groups of the TPA-based polyester, and a second network initiator for initiating the polymerization of the one or more second network compounds.