This disclosure describes compositions, kits, methods, systems, and three-dimensional parts. According to an example, described herein is a three-dimensional printed part made from three-dimensional printing, the three-dimensional part comprising: a thermoplastic polymer powder composition comprising a mixture of two or more polyolefins including at least 60 wt % of a C3 polyolefin based on the total weight of the mixture of the two or more polyolefins, wherein the thermoplastic polymer powder composition has a processing window of from about 120° C. to about 150° C.

An optical printing positioning system is set forth. The system includes a cavity for retaining an optical surface having an inner surface dimensioned and configured to maintain and to constrain an optical surface disposed therein when the optical surface undergoes a printing process.

This disclosure describes compositions, kits, methods, systems, and three-dimensional parts. According to an example, described herein is a threedimensional printing composition comprising: a polymeric powder build material comprising a thermoplastic polymer powder composition, wherein the thermoplastic polymer powder composition comprises: (a) at least 50 wt % of a C3 polyolefin, or a mixture of two or more polyolefins including at least 60 wt % of a C3 polyolefin based on the total weight of the mixture of the two or more polyolefins, (b) 0.1 to 1 wt % antioxidants, (c) 0.1 to 5 wt % flow aids, (d) 0-10 wt % of a surface modifying agent, (e) 0.05-wt %-10 wt % antistatic agents, (f) 2 wt % to 40 wt % filler, wherein the total of (a) to (f) is 100 wt %.

The present disclosure relates to a surface-modifiable injection-molded body comprising a thermoplastic polymer matrix and second polymer material at least in parts, in which the polymer matrix and the second polymer material have different weight average molecular weights and polarities, and the second polymer material is an adhesive. The present disclosure also relates to a method for its production.

Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA) wherein a macromer is photopolymerized to form a manufactured article. Representative compounds comprise a polyaxial central core (CC) and 2-4 arms of the formula (A)-(B) or (B)-(A) extending from the central core, where at least one of the arms comprise a light-reactive functional group (Q) and (A) is the free-radical polymerization product from monomers selected from trimethylene carbonate (T) and ε-caprolactone (C), while (B) is the free-radical polymerization product from monomers selected from glycolide, lactide and p-dioxanone.

The present disclosure provides a process. In an embodiment, the process includes providing a foamable composition. The foamable composition includes an ethylene-based elastomer, a blowing agent, and a peroxide. The process includes heating the foamable composition to form a pliable formulation. The pliable formulation has (i) a viscosity (0.1 rad/s at 180 C.) from greater than 70,000 Pa.Math.s to 2,000,000 Pa.Math.s, (ii) a tan delta (0.1 rad/s at 180 C.) from 0.2 to less than 2, (iii) a strain hardening index greater than 2.5 to 6, and (iv) an extensional viscosity (1 s.sup.1 at 180 C.) from greater than 400,000 Pa-s to 7,000,000 Pa-s. The process includes introducing the pliable formulation into a mold having an expandable mold cavity and unidirectionally expanding the expandable mold to form a crosslinked foam article. The process includes cooling, in the expanded mold, the crosslinked foam article; and removing the crosslinked foam article from the expandable mold.

A heart valve is at least partially constructed from a block-copolymer, the block-copolymer having a phase structure formed by its constituent blocks, and wherein the phase structure is arranged so as to produce anisotropic physical properties in the heart valve.

The present invention relates to a method for interconnecting components of a sporting good, in particular a sports shoe, and a sports shoe manufactured with such a method. The method may include (a.) forming a pattern element having at least one removable at least partially non-transparent or non-reflective portion, (b.) irradiating at least one of the first and the second component via the pattern element with heat radiation and (c.) interconnecting the irradiated first and second component.

The present invention relates to a method for interconnecting components of a sporting good, in particular a sports shoe, and a sports shoe manufactured with such a method. The method may include (a.) forming a pattern element having at least one removable at least partially non-transparent or non-reflective portion, (b.) irradiating at least one of the first and the second component via the pattern element with heat radiation and (c.) interconnecting the irradiated first and second component.

A composition includes specific amounts of a block polycarbonate-polysiloxane, a core-shell impact modifier, and, optionally, a block polyestercarbonate. The core-shell impact modifier has a core that includes polydimethylsiloxane or poly(butyl acrylate) or both, and a shell includes a poly(methyl methacrylate). The block polyestercarbonate-polysiloxane and the block polyester-carbonate are present in a total amount of greater than 60 weight percent to 99 weight percent. And the block polyestercarbonate-poly-siloxane contributes 0.3 to 0.7 weight percent of dimethylsiloxane units to the composition. Also described are an article comprising the composition, and a method of additive manufacturing utilizing the composition.