US 12,214,548 B2
Processes for producing a shaped body using polyamide blends containing a polyarylether
Claus Gabriel, Ludwigshafen am Rhein (DE); Martin Weber, Ludwigshafen am Rhein (DE); Philipp Kloke, Schramberg (DE); and Thomas Meier, Ludwigshafen am Rhein (DE)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 16/321,079
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Jul. 21, 2017, PCT No. PCT/EP2017/068534
§ 371(c)(1), (2) Date Jan. 28, 2019,
PCT Pub. No. WO2018/019730, PCT Pub. Date Feb. 1, 2018.
Claims priority of application No. 16181973 (EP), filed on Jul. 29, 2016.
Prior Publication US 2019/0168450 A1, Jun. 6, 2019
Int. Cl. B29C 64/153 (2017.01); B29K 71/00 (2006.01); B29K 77/00 (2006.01); B29K 81/00 (2006.01); B33Y 10/00 (2015.01); B33Y 70/00 (2020.01); B33Y 80/00 (2015.01); C08L 71/12 (2006.01); C08L 77/02 (2006.01); C08L 81/06 (2006.01)
CPC B29C 64/153 (2017.08) [B33Y 10/00 (2014.12); B33Y 70/00 (2014.12); B33Y 80/00 (2014.12); C08L 71/12 (2013.01); C08L 77/02 (2013.01); B29K 2071/00 (2013.01); B29K 2077/00 (2013.01); B29K 2081/06 (2013.01); C08L 81/06 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A process for producing a shaped body by selective laser sintering of a sinter powder (SP), wherein the sinter powder (SP) comprises the following components:
(A) at least one semicrystalline polyamide comprising at least one unit selected from the group consisting of —NH—(CH2)m—NH— units where m is 4, 5, 6, 7 or 8, —CO—(CH2)n—NH— units where n is 3, 4, 5, 6 or 7, and —CO—(CH2)o—CO— units where o is 2, 3, 4, 5 or 6,
(B) at least one nylon-6I/6T,
(C) at least one polyaryl ether,
wherein
component (C) is a polyaryl ether containing units of the general formula (I)

OG Complex Work Unit Chemistry
with the following definitions:
t, q: each independently 0, 1, 2 or 3,
Q, T, Y: each independently a chemical bond or group selected from —O—, —S—, —SO2—, S═O, C═O, —N═N— and —CRaRb— where Ra and Rb are each independently a hydrogen atom or a C1-C12-alkyl, C1-C12-alkoxy or C6-C18-aryl group and where at least one of Q, T and Y is-SO2— and
Ar, Ar1: each independently an arylene group having from 6 to 18 carbon atoms, and wherein a first layer of the sinter powder (SP) is arranged in a powder bed and locally exposed to a laser beam, and wherein the sinter powder (SP) comprises in the range from 20% to 90% by weight of component (A), in the range from 5% to 40% by weight of component (B) and in the range from 5% to 40% by weight of component (C), based in each case on the sum total of the percentages by weight of components (A), (B) and (C).