WO2025068916 - FLAME RETARDANT POLYCARBONATE COMPOSITIONS
National phase entry:
Publication Number
WO/2025/068916
Publication Date
03.04.2025
International Application No.
PCT/IB2024/059363
International Filing Date
25.09.2024
Title **
[English]
FLAME RETARDANT POLYCARBONATE COMPOSITIONS
[French]
COMPOSITIONS DE POLYCARBONATE IGNIFUGES
Applicants **
SHPP GLOBAL TECHNOLOGIES B.V.
Inventors
LUGGER, Jody Ann Martin
VAN HEERBEEK, Hendrikus Petrus Cornelis
VAN DER MEE, Mark Adrianus Johannes
Priority Data
23199544.0
25.09.2023
EP
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2085 | |
| EPO | Filing, Examination, Granting | 8306 | |
| Japan | Filing, Examination, Granting | 2155 | |
| South Korea | Filing, Examination, Granting | 2071 | |
| USA | Filing, Examination, Granting | 5340 |
Total:
19,957
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
Polycarbonate compositions having a low added fluorine content while also achieving a V-0 flame test rating at 1.5 mm or 1.2 mm include: 80-95 wt% of a homopolycarbonate composition including one or more homopolycarbonates, wherein an average of the weight average molecular weight of the homopolycarbonates is 26,000 g/mol or more; 5-20 wt% of a poly(carbonate-siloxane) having a siloxane content of 30-70 wt% present in an amount effective to provide 2-14 wt% siloxane repeating units based on the total weight of the composition, and having a weight average molecular weight of 26,000-50,000 g/mol, and having less than 1 wt% of a poly(carbonate-siloxane) having a siloxane content of less than 30 wt%; 2.5-10 wt% of a phosphazene flame retardant.[French]
L'invention concerne des compositions de polycarbonate ayant une faible teneur en fluor ajoutée tout en obtenant également une évaluation de test de flamme V-0 à 1,5 mm ou 1,2 mm qui comprennent : de 80 à 95% en poids d'une composition d'homopolycarbonate comprenant un ou plusieurs homopolycarbonates, une moyenne du poids moléculaire moyen en poids des homopolycarbonates étant de 26 000 g/mol ou plus ; de 5 à 20% en poids d'un poly (carbonate-siloxane) ayant une teneur en siloxane de 30 à 70% en poids présente en une quantité efficace pour fournir de 2 à 14% en poids de motifs de répétition de siloxane sur la base du poids total de la composition, et ayant un poids moléculaire moyen en poids de 26 000 à 50 000 g/mol, et ayant moins de 1% en poids d'un poly (carbonate-siloxane) ayant une teneur en siloxane inférieure à 30% en poids ; de 2,5 à 10% en poids d'un retardateur de flamme de phosphazène.