WO2025104593 - PFAS-FREE FLAME RETARDANT, IMPACT RESISTANT AND CHEMICAL RESISTANT POLYCARBONATE COMPOSITIONS
National phase entry:
Publication Number
WO/2025/104593
Publication Date
22.05.2025
International Application No.
PCT/IB2024/061243
International Filing Date
12.11.2024
Title **
[English]
PFAS-FREE FLAME RETARDANT, IMPACT RESISTANT AND CHEMICAL RESISTANT POLYCARBONATE COMPOSITIONS
[French]
COMPOSITIONS IGNIFUGES DE POLYCARBONATE SANS PFAS, RÉSISTANTES AUX CHOCS ET RÉSISTANTES AUX PRODUITS CHIMIQUES
Applicants **
SHPP GLOBAL TECHNOLOGIES B.V.
Inventors
LI, Yuntao
KYE, Daniel Kyungbin
Priority Data
23210723.5
17.11.2023
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 | 2087 | |
| EPO | Filing, Examination, Granting | 8286 | |
| Japan | Filing, Examination, Granting | 2154 | |
| South Korea | Filing, Examination, Granting | 2066 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,333
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 include: a. from 20 wt% to 93 wt% of a polycarbonate component including one or more of a virgin polycarbonate homopolymer and a post- consumer recycled polycarbonate; b. from 1 wt% to 25 wt% of a polycarbonate-polysiloxane copolymer having (1) a siloxane content of from about 30 wt% to 70 wt% present in an amount effective to provide the composition with a total siloxane content of 0.5 wt% to 25 wt%, and (2) a weight average molecular weight of 26,000 to 50,000 grams per mole, as determined by gel permeation chromatography using polystyrene standards and calculated for polycarbonate; and c. from greater than 6 wt% to 20 wt% of at least one phosphorous flame retardant additive. The flame retardant additive is free of or substantially free of halogen. A molded sample of the polycarbonate composition exhibits a UL-94 rating of V-0 at a thickness of 1.5 mm or less.[French]
L'invention concerne des compositions de polycarbonate comprenant : a. 20 % en poids à 93 % en poids d'un constituant de polycarbonate comprenant un ou plusieurs éléments parmi un homopolymère de polycarbonate vierge et un polycarbonate recyclé post-consommation ; b. 1 % en poids à 25 % en poids d'un copolymère de polycarbonate-polysiloxane présentant (1) une teneur en siloxane d'environ 30 % en poids à 70 % en poids, présent en une quantité efficace pour obtenir la composition avec une teneur totale en siloxane de 0,5 % en poids à 25 % en poids et (2) une masse moléculaire moyenne en poids de 26 000 à 50 000 grammes par mole, telle que déterminée par chromatographie par perméation de gel à l'aide de standards de polystyrène et calculée pour le polycarbonate ; et c. plus de 6 % en poids à 20 % en poids d'au moins un additif ignifuge phosphoreux. L'additif ignifuge est exempt ou sensiblement exempt d'halogène. Un échantillon moulé de la composition de polycarbonate présente un indice UL-94 de V-0 à une épaisseur de 1,5 mm ou moins.