WO2025068910 - FLAME RETARDANT POLYCARBONATE COMPOSITIONS
National phase entry:
Publication Number
WO/2025/068910
Publication Date
03.04.2025
International Application No.
PCT/IB2024/059354
International Filing Date
25.09.2024
Title **
[English]
FLAME RETARDANT POLYCARBONATE COMPOSITIONS
[French]
COMPOSITIONS IGNIFUGES DE POLYCARBONATE
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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| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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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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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2102 | |
| EPO | Filing, Examination, Granting | 8536 | |
| Japan | Filing, Examination, Granting | 2227 | |
| South Korea | Filing, Examination, Granting | 2235 | |
| USA | Filing, Examination, Granting | 5340 |
Total:
20,440
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 include: a homopolycarbonate composition having one or more homopolycarbonates, wherein an average of the weight average molecular weight of the homopolycarbonate composition is 25,000 g/mol or more, a poly(carbonate-siloxane) having a siloxane content of 30-70 wt% present in an amount effective to provide 4.5-14 wt% siloxane repeating units based on the total weight of the composition, and having a weight average molecular weight of 26,000-50,000 grams per mole,; and having less than 1 wt% of a poly(carbonate-siloxane) with a siloxane content of less than 30 wt%; 0.01-1.0 wt% of a flame retardant comprising an aromatic sulfonate inorganic salt, an aromatic sulfone sulfonate inorganic salt, or a combination thereof.[French]
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 comprennent : une composition d'homopolycarbonate ayant un ou plusieurs homopolycarbonates, une moyenne de la masse moléculaire moyenne en poids de la composition d'homopolycarbonate étant de 25 000 g/mol ou plus, un poly(carbonate-siloxane) ayant une teneur en siloxane de 30 à 70 % en masse présent en une quantité efficace pour fournir de 4,5 à 14 % en masse d'unités de répétition de siloxane sur la base de la masse totale de la composition, et ayant une masse moléculaire moyenne en poids de 26 000 à 50 000 grammes par mole ; et ayant moins de 1 % en masse d'un poly(carbonate-siloxane) ayant une teneur en siloxane inférieure à 30 % en masse ; 0,01 à 1,0 % en masse d'un retardateur de flamme comprenant un sel inorganique de sulfonate aromatique, un sel inorganique de sulfonate de sulfone aromatique, ou une combinaison de ceux-ci.