EP 4320184 A1 20240214 - FLAME RETARDANT POLYAMIDE COMPOSITIONS, USES OF SAME AND PROCESSES FOR THE PREPARATION THEREOF
Title (en)
FLAME RETARDANT POLYAMIDE COMPOSITIONS, USES OF SAME AND PROCESSES FOR THE PREPARATION THEREOF
Title (de)
FLAMMHEMMENDE POLYAMIDZUSAMMENSETZUNGEN, VERWENDUNGEN DAVON UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
COMPOSITIONS DE POLYAMIDE IGNIFUGES, LEURS UTILISATIONS ET LEURS PROCEDES DE PREPARATION
Publication
Application
Priority
- FR 2103584 A 20210408
- FR 2022050607 W 20220331
Abstract (en)
[origin: WO2022214755A1] The invention relates to a composition for a thermoplastic composite material, comprising: (a) from 65 to 95% by weight of at least one reactive semi-crystalline polyamide prepolymer having an average molar mass Mn of less than 5000 g/mol and having a volume median diameter Dv50 of the reactive semi-crystalline polyamide prepolymer powder particles of 10 to 300 μm; (b) from 5 to 35% by weight of at least one flame retardant selected from an at least partially meltable flame retardant in powder form and having a volume median diameter Dv50 of 10 to 300 μm, and a non-meltable flame retardant in the form of a pre-milled powder and having a volume median diameter Dv50 of 1 to 50 μm; and (c) from 0 to 2% by weight of at least one additive, and said reactive polyamide prepolymer comprising or consisting of at least one Z/BACT/XT copolyamide wherein: - BACT is an amide unit having a molar ratio of 10 to 65%; - XT is an amide unit having a molar ratio of 30 to 60 mol%; - Z Is an amide unit unit present at a molar ratio ranging from 5 to 30%; and wherein the molar sum Z + BACT + XT is equal to 100%, the sum of the constituents (a) + (b) + (c) is equal to 100%, and said reactive semi-crystalline polyamide prepolymer has a melting point Tf < 300°C, a glass transition temperature Tg > 80°C, and a difference between the melting point and the crystallization temperature Tf -Tc < 70°C.
IPC 8 full level
C08J 5/04 (2006.01); C08G 69/26 (2006.01); C08K 5/527 (2006.01); C08K 5/5313 (2006.01); C08K 7/02 (2006.01); C08L 77/02 (2006.01); C08L 77/06 (2006.01)
CPC (source: EP)
C08G 69/265 (2013.01); C08J 5/042 (2013.01); C08L 77/02 (2013.01); C08J 2323/00 (2013.01); C08J 2377/00 (2013.01); C08K 5/527 (2013.01); C08K 5/5313 (2013.01); C08L 77/06 (2013.01)
C-Set (source: EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2022214755 A1 20221013; EP 4320184 A1 20240214; FR 3121681 A1 20221014; FR 3121681 B1 20240503
DOCDB simple family (application)
FR 2022050607 W 20220331; EP 22719320 A 20220331; FR 2103584 A 20210408