US 12,202,974 B2
Method for manufacturing a silicone elastomer article using a 3D printer
Christophe Marquette, Villeurbanne (FR); Edwin-Joffrey Courtial, Villeurbanne (FR); and Jean-Marc Frances, Meyzieu (FR)
Assigned to ELKEM SILICONES FRANCE, Lyons (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); UNIVERSITÉ CLAUDE BERNARD LYON, Villeurbanne (FR); and INSTITUT NATIONAL DES SCIENCES APPLIQUÉES LYON 1, Villeurbanne (FR)
Appl. No. 17/053,969
Filed by ELKEM SILICONES France SAS, Lyons (FR); Centre national de la recherche scientifique, Paris (FR); Université Claude Bernard Lyon 1, Villeurbanne (FR); and Institut National des Sciences Appliquées LYON, Villeurbanne (FR)
PCT Filed May 7, 2019, PCT No. PCT/EP2019/061736
§ 371(c)(1), (2) Date Nov. 9, 2020,
PCT Pub. No. WO2019/215190, PCT Pub. Date Nov. 14, 2019.
Claims priority of application No. 18305570 (EP), filed on May 9, 2018.
Prior Publication US 2021/0238418 A1, Aug. 5, 2021
Int. Cl. C08L 83/04 (2006.01); B29C 64/106 (2017.01); B29C 64/357 (2017.01); B29K 83/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08L 71/02 (2006.01)
CPC C08L 83/04 (2013.01) [B29C 64/106 (2017.08); B29C 64/357 (2017.08); B33Y 70/00 (2014.12); B29K 2083/00 (2013.01); B33Y 10/00 (2014.12); C08L 71/02 (2013.01); C08L 2312/00 (2013.01)] 17 Claims
 
1. A method for manufacturing a silicone elastomer article comprising:
1) providing a composition C, comprising water and at least 20% by weight of at least one poloxamer, into a container;
2) placing the container comprising the composition C at a required temperature T1 to form a gel;
3) printing a crosslinkable silicone composition X into the gel obtained in 2) with a 3D printer at the required temperature T1;
4) allowing the printed composition X to partially or totally crosslink, by heating at a temperature between 30° C. and 90° C. to obtain a silicone elastomer article, in the container;
5) placing the container obtained in 4) at a temperature T3 lower than the sol-gel transition temperature of composition C;
6) after 5), recovering the silicone elastomer article; and
7) optionally washing the obtained silicone elastomer article for example with water at the temperature T3 lower than the sol-gel transition temperature of composition C;
wherein after 5), composition C is recovered in a reusable form and is recycled in 1).