US 12,134,670 B2
Composition used in 3D printing system, its application thereof
Hang Xu, Chigasaki (JP); Sheng Zhong Zhou, Shanghai (CN); and Stefan Hirsemann, Shanghai (CN)
Assigned to BASF SE, (DE)
Appl. No. 16/608,261
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Apr. 16, 2018, PCT No. PCT/EP2018/059654
§ 371(c)(1), (2) Date Oct. 25, 2019,
PCT Pub. No. WO2018/197248, PCT Pub. Date Nov. 1, 2018.
Claims priority of application No. PCT/CN2017/081898 (WO), filed on Apr. 25, 2017.
Prior Publication US 2020/0181303 A1, Jun. 11, 2020
Int. Cl. C08F 220/06 (2006.01); B29C 64/40 (2017.01); B29K 33/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); C08F 220/04 (2006.01); C08F 220/28 (2006.01)
CPC C08F 220/06 (2013.01) [B29C 64/40 (2017.08); B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); C08F 220/04 (2013.01); C08F 220/282 (2020.02); B29K 2033/12 (2013.01); C08F 220/281 (2020.02)] 18 Claims
 
1. A composition comprising:
a) 10% to 30% by weight of at least one monomer of Formula I:

OG Complex Work Unit Chemistry
wherein R1 is a C2-C8 alkenyl group with or without substitution of a carboxyl group;
b) 10% to 30% by weight of at least one monomer of Formula II:

OG Complex Work Unit Chemistry
wherein R2 is a C1-C18 alkyl group with or without substitution of a hydroxy group, a 2-(2-ethoxyethoxy) group or a C1-C8 alkoxy group, a C2-C8 alkenyl group, a cyclohexyl group, or a tetrahydrofurfuryl group; R3 is a C1-C8 alkyl group or a C2-C8 alkenyl group and the total number of unsaturated bond in R2 and R3 is 1;
c) 5% to 15% by weight of at least one alkali metal salt of Formula III and/or Formula IV;

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
wherein M is alkali metal selected from sodium, potassium and lithium; R4, R5, R6, R7, R8, R9 and R10 are independently of each other hydrogen, methyl or ethyl group; n, m and 1 are independently of each other integer number from 0 to 3;
d) 0.5% to 10% by weight of at least one water soluble saturated polyvalent metallic salt having no unsaturated C≡C bond which can generate polyvalent metallic cations;
e) 1% to 10% by weight of at least one polymerization initiator; and
f) 20% to 50% by weight of water, and the weight percentages of components a), b), c), d), e) and f) are based on a total weight of the composition;
wherein said water soluble polyvalent metallic cation is selected from ferric cation, or aluminum cation, or a mixture thereof.