公开(公告)号：US20220340727A1

公开(公告)日：2022-10-27

申请号：US17753712

申请日：2020-09-11

Applicant: BASF SE

Inventor： Daniela LONGO-SCHEDEL ,  Isa Alexandra QUEIROZ DA FONSECA ,  Patrick SPIES ,  Rene HOLSCHUH ,  Rainer BIRLI ,  Angelika KELLER

IPC: C08J9/00 ,  C08J9/12 ,  C08J9/228 ,  C08L77/02 ,  C08L77/08

Abstract: Described herein are polyamide foam particles including a polymer mixture including: (A) from 25 to 95 wt.-% of at least one polyamide, which is different from a copolyamide (B); and (B) from 5 to 75 wt.-% of at least one copolyamide prepared by polymerizing the following components: (B1) from 15 to 84 wt.-% of at least one lactam; and (B2) from 16 to 85 wt.-% of monomer mixture (M) including; (M1) at least one C32-C40 dimer acid; and (M2) at least one C4-C12 diamine; where the sum of the components (B1) and (B2) are 100 wt.-%. Also described herein is a process for preparing such polyamide foam particles and polyamide particle foam moldings obtainable by steam-chest molding.

公开(公告)号：US20200148851A1

公开(公告)日：2020-05-14

申请号：US16627501

申请日：2018-07-25

Applicant: BASF SE

Inventor： Isa Alexandra QUEIROZ DA FONSECA ,  Peter GUTMANN ,  Judith BRAEUER ,  Georg GRAESSEL ,  Rainer BIRLI ,  Markus SCHMIDT ,  Sibylle BURKHART ,  Angelika KELLER ,  Florian HENNENBERGER

IPC: C08J9/18 ,  B29C44/02 ,  B29B9/12 ,  B29C44/34 ,  C08J9/00 ,  C08J9/232 ,  C08J9/14

Abstract: Expandable, blowing agent-containing pellets based on high temperature thermoplastics having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expandable, blowing agent-containing pellets comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 400 to 900 kg/m3 and a mass in the range from 1 to 5 mg/pellet, processes for production thereof and foam particles obtainable therefrom having a glass transition temperature according to ISO 11357-2-1999 of at least 180° C., wherein the expanded foam particles comprise at least one nucleating agent and have a poured density according to DIN ISO 697:1982 in the range from 10 to 200 kg/m3, and particle foams obtainable therefrom and the use thereof for producing components for aviation.