Abstract:
Disclosed are polymerizable compositions, methods, and articles and coatings related to multi-polymer networks wherein at least one of the polymer networks is based on particles. In an embodiment, the polymerizable compositions comprise at least two parts: 1) a polymer forming part comprising one or more compounds comprising a polymerizable group, wherein a composition consisting of the polymer forming part, if 90% or more polymerized, has a Tg of less than 25 °C and a prescribed volume average cross-link density at 100 °C; and 2) swellable particles comprising cross-links and having a Tg of less than 25 °C and a prescribed cross-link density The swellable particles swell to a prescribed swelling ratio by mass from their non-swollen state if the swellable particles are swollen to equilibrium in a mixture consisting of the polymer forming part and the swellable particles.
Abstract:
The invention relates to a multi-component resin system comprising (A) a hydroxyl functional unsaturated polyester resin comprising fumaric acid building blocks as unsaturated dicarboxylic acid building blocks and hydroxyl building blocks according to formula 1 in which n+m ≥3, R is H or CH3 and R1 is H or CH3 and having a hydroxyl value of from 40 up to and including 150 and an acid value
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 first oligomer 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 first oligomer comprises a polyepoxide based on Bisphenol A, F, or S, a polyepoxide based on hydrogenated Bisphenol A, F, or S, a polycarbonate, or a polyimide. The composition may further comprise a second network-forming component.
Abstract:
This invention relates to a multi-component system comprising a first component, a second component and a third component wherein the first component being a resin composition comprising an hydroxy-functional unsaturated polyester resin with an acid value 1 , R 2 , R 3 and R 4 are independently selected from hydrogen, C1-C12 alkyl, C3-C8 cycloalkyl, C6-C12 aryl and C5-C12 heteroaryl; X is selected from C=O and -[C(R) 2 ] z - wherein z is from 1 to 3 and each R is independently selected from hydrogen, hydroxyl, C1 -C4 alkoxy and C1 -C4 alkyl; each Rx and Ry are independently selected from hydrogen, C1 -C8 alkyl, C1-C8-alkyl-O-C1-C8-alkyl, C1-C8-alkyl-O-C6-C10-aryl, C6-C10-aryl, C1 -C8-hydroxyalkyl, and (CH 2 )nC(O)OR 5 wherein n is from 0 to 4 and R 5 is hydrogen, C1-C12 alkyl or an amide; Ra is a 2-pyridyl group or an alkylidene-2-pyridyl group; Rb is selected from C1-C24 alkyl, C6-C10 aryl and a group containing a heteroatom; and wherein the resin composition comprises an iron salt and/or complex; and the second component comprises an isocyanate compound with an average functionality > 1.7, and the third component comprises a peroxide compound.