公开(公告)号：US11248080B2

公开(公告)日：2022-02-15

申请号：US16613832

申请日：2018-05-16

Applicant: BASF SE

Inventor： Konrad Knoll ,  Ingo Bellin ,  Jan Holoch ,  Eckhard Neufeld

IPC: C08G83/00 ,  C08F297/04 ,  C08J9/14 ,  C08J9/20 ,  C08J9/232 ,  C08L53/00 ,  C09K21/14

Abstract: Brominated vinylaromatic-diene block copolymers (Br-SBC) comprising a vinylaromatic polymer block S and a brominated diene polymer block BB, wherein before bromination the weight-average molar mass Mw of the block S is greater than or equal to Mw of the block BB, use thereof as flame retardants, and also polymer compositions comprising these for unfoamed and foamed thermoplastic polymers, for example EPS and XPS.

公开(公告)号：US10253150B2

公开(公告)日：2019-04-09

申请号：US14938095

申请日：2015-11-11

Applicant: BASF SE

Inventor： Andreas Füssl ,  Bangaru Dharmapuri Sriramulu Sampath ,  Maximilian Hofmann ,  Ingo Bellin ,  Sameer Nalawade ,  Klaus Hahn ,  Andreas Künkel ,  Robert Loos

IPC: C08L67/04 ,  C08J9/12 ,  C08J9/00 ,  C08J9/16 ,  C08J9/18 ,  C08L33/06 ,  C08L67/02

Abstract: The invention relates to a process for producing expandable pelletized material which comprises polylactic acid which comprises the following steps: a) melting and incorporation by mixing of polylactic acid, one or more further polymers, a diepoxide or polyepoxide, and one or more additives, b) incorporation by mixing of an organic blowing agent into the polymer melt by means of a static or dynamic mixer at a temperature of at least 140° C., c) discharging through a die plate with holes, the diameter of which at the exit from the die is at most 1.5 mm, and d) pelletizing the melt comprising blowing agent directly downstream of the die plate, and under water, at a pressure in the range from 1 to 20 bar. The invention further relates to expandable pelletized material which comprises polylactic acid and which is obtainable by said process.