WO2025169073 - FLAME RETARDANT POLYBUTYLENE TEREPHTHALATE COMPOSITIONS AND ARTICLES
National phase entry is expected:
Publication Number
WO/2025/169073
Publication Date
14.08.2025
International Application No.
PCT/IB2025/051184
International Filing Date
04.02.2025
Title **
[English]
FLAME RETARDANT POLYBUTYLENE TEREPHTHALATE COMPOSITIONS AND ARTICLES
[French]
COMPOSITIONS DE POLY(TÉRÉPHTALATE DE BUTYLÈNE) IGNIFUGES ET ARTICLES
Applicants **
SHPP GLOBAL TECHNOLOGIES B.V.
Inventors
WANG, Jian
CHENG, Yunan
ZHENG, Yun
Priority Data
24156209.9
07.02.2024
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 | 2070 | |
| EPO | Filing, Examination, Granting | 8246 | |
| Japan | Filing, Examination, Granting | 2155 | |
| South Korea | Filing, Examination, Granting | 2071 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,282
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Abstract[English]
Thermoplastic compositions include: (a) from about 20 wt% to about 60 wt% of a polybutylene terephthalate (PBT) component; (b) from about 3 wt% to about 30 wt% of a polyetherimide (PEI) component; (c) from about 5 wt% to about 25 wt% of a phosphorous flame retardant (FR) component; and (d) from about 10 wt% to about 50 wt% of a low Dk flat glass fiber. The composition has a UL94 flame retardancy rating of V0 or V1 at a thickness of 0.8 millimeter (mm) or 1.0 mm, a notched Izod impact strength of at least 100 joules per meter (J/m) as tested in accordance with ASTM D256 at 25 °C and 5 pound-force per foot (lbf/ft), or a metal bonding force of at least 20 megapascals (MPa) as tested in accordance with ISO 19095 using a TRI-treatment. Methods of forming the thermoplastic compositions are also described.[French]
L'invention concerne des compositions thermoplastiques qui comprennent : (a) d'environ 20 % en poids à environ 60 % en poids d'un composant poly(téréphtalate de butylène) (PBT) ; (b) d'environ 3 % en poids à environ 30 % en poids d'un composant polyétherimide (PEI) ; (c) d'environ 5 % en poids à environ 2 5% en poids d'un composant ignifuge à base de phosphore (FR) ; et (d) d'environ 10 % en poids à environ 50 % en poids d'une fibre de verre plate à Dk faible. La composition possède un indice d'ignifugation UL94 de V0 ou V1 à une épaisseur de 0,8 millimètre (mm) ou 1,0 mm, une résistance au choc sur barreau entaillé d'après Izod d'au moins 100 joules par mètre (J/m) testée conformément à la norme ASTM D256 à 25 °C et une force de 5 livres-pieds (lbf/ft), ou une force de liaison métallique d'au moins 20 mégapascals (MPa) testée conformément à la norme ISO 19095 à l'aide d'un traitement TRI. L'invention concerne également des procédés pour former ces compositions thermoplastiques.