公开(公告)号：US20230082902A1

公开(公告)日：2023-03-16

申请号：US17783278

申请日：2020-11-17

Applicant: BASF SE

Inventor： Claus GABRIEL ,  Jordan Thomas KOPPING ,  Thomas MEIER ,  Erik GUBBELS ,  Ruth LOHWASSER ,  Simon KNIESEL

IPC: B29C64/153 ,  C08L67/02 ,  B33Y70/00 ,  C08G63/183 ,  C08J3/12

Abstract: The present invention relates to a sinter powder (SP) comprising at least one semicrystalline terephthalate polyester (A) which is prepared by reacting at least one aromatic dicarboxylic acid (a) and at least two aliphatic diols (b1) and (b2), where the aliphatic diol (b1) is neopentyl glycol. The present invention further relates to a method of producing the sinter powder (SP), and to a method of producing a shaped body by sintering the sinter powder (SP). The present invention further relates to the shaped body obtainable by the sintering. The present invention also relates to the use of the sinter powder (SP) in a sintering method.

公开(公告)号：US20210206941A1

公开(公告)日：2021-07-08

申请号：US15999522

申请日：2017-02-16

Applicant: BASF SE

Inventor： Claus GABRIEL ,  Ruth LOHWASSER ,  Rainer OSTERMANN ,  Simon GRAMLICH ,  Philipp KLOKE

IPC: C08K3/34 ,  C08G69/14 ,  C08L77/02 ,  C08L77/06 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/10

Abstract: The present invention relates to a process for producing a shaped body by selective laser sintering of a sinter powder (SP). The sinter powder (SP) comprises at least one polyimide (P) and in the range from 10% to 50% by weight of at least one aluminosilicate. The at least one aluminosilicate has a D50 in the range from 2.5 to 4.5 μm. The present invention further relates to shaped bodies obtainable by the process of the invention.

公开(公告)号：US20190264029A1

公开(公告)日：2019-08-29

申请号：US16307723

申请日：2017-06-08

Applicant: BASF SE

Inventor： Ruth LOHWASSER ,  Natalie Beatrice Janine HERLE ,  Rosa CORBERAN ROC ,  Axel HUST

IPC: C08L77/06 ,  C08L23/22 ,  C08L77/02 ,  C08L35/00 ,  B29C45/00

Abstract: A thermoplastic molding composition containing A) 20 to 99.9 wt % of a thermoplastic polyamide, B) 0.1 to 40 wt % of an alkenylsuccinic acid derivative obtained by reaction of polyiso-butene (B1) having a number-average molecular weight Mn of 10,000 to 50,000 at temperatures of 180° C. to 250° C. with maleic acid or derivatives thereof (B2) in a stoichiometric ratio of at least 2 equivalents of α,β-unsaturated mono- and dicarboxylic acid or derivatives thereof (B2) per reactive double bond in the polyisobutene (B1) for a duration of at least 15 minutes to 10 hours and up to 10 bar of positive pressure, wherein the derivatives are anhydrides, mono- or dialkyl esters, and mixed esters, and wherein the reactive double bonds are the sum total of the terminal α- and β-double bonds in the polyisobutene (B1), and C) 0 to 60 wt % of further additives, wherein the weight percentages for the components A) to C) sum to 100%.