公开(公告)号：US11008440B2

公开(公告)日：2021-05-18

申请号：US16320228

申请日：2017-07-24

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Liang Wen ,  Benoit Lecouvet ,  Chaodong Jiang ,  Azzedine Kioul ,  Saad Alhussain ,  Faisal Al Suhaibani ,  Jun Zhou

IPC: C08K13/02 ,  C08K3/32 ,  C08K5/523 ,  C08L23/12 ,  C09K21/12 ,  C09K21/04 ,  C08K5/3462 ,  C08K5/3492 ,  C08K5/49 ,  C08K5/00 ,  C08K3/016

Abstract: The invention relates to a flame retardant polypropylene composition comprising (A) a polypropylene-based polymer, (B) a first flame retardant in an amount of 15 to 40 wt % of the total composition, wherein the first flame retardant is in the form of particles comprising ammonium polyphosphate and at least one phosphate selected from the group consisting of melamine phosphate, melamine polyphosphate, melamine pyrophosphate, piperazine phosphate, piperazine polyphosphate, piperazine pyrophosphate, 2-methylpiperazine monophosphate, tricresyl phosphate, alkyl phosphates, haloalkyl phosphates, tetraphenyl pyrophosphate, poly(2-hydroxy propylene spirocyclic pentaerythritol bisphosphate) and poly(2,2-dimethylpropylene spirocyclic pentaerythritol bisphosphonate) and (C) a second flame retardant in an amount of 0.1 to 15 wt % of the total composition, wherein the second flame retardant comprises an aromatic phosphate ester.