WO2024171162 - A METHOD OF CURING AN EPOXIDE AND USE OF THE CURED EPOXIDE
National phase entry:
Publication Number
WO/2024/171162
Publication Date
22.08.2024
International Application No.
PCT/IB2024/051559
International Filing Date
19.02.2024
Title **
[English]
A METHOD OF CURING AN EPOXIDE AND USE OF THE CURED EPOXIDE
[French]
PROCÉDÉ DE DURCISSEMENT D'UN ÉPOXYDE ET UTILISATION DE L'ÉPOXYDE DURCI
Applicants **
ADITYA BIRLA CHEMICALS (THAILAND) LTD.
Inventors
DUBEY, Pradip
KOSINSKI, Szymon
DIXIT, Amit
NAIYAWAT, Thipa
SITTIPUMMONGKOL, Kanyarat
NOIPHOM, Nok
Priority Data
202321003699
18.02.2023
IN
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Pages of Specification | * |
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| Number of Office Actions | * |
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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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| * | |
| * | |
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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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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 1883 | |
| EPO | Filing, Examination, Granting | 8266 | |
| Japan | Filing, Examination, Granting | 1947 | |
| South Korea | Filing, Examination, Granting | 1547 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,383
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The invention relates to a method of curing an epoxide prepared from phenolic compounds such that the cured epoxy resin has a glass transition temperature (Tg) of at least 245°C The method comprises: (a) mixing the epoxide at a temperature of 25 to100°C with at least one hardener, a naturally occurring aliphatic polyamine or at least one analogue thereof or combination thereof, and at least one antioxidant; (b) heating the mixture of step(a) at 100 to 130 °C for 1 to 3 hrs; (c) heating the partially cured mixture of step(b) at 130 to 160 °C for 1 to 3 hrs; and (d) heating the substantially cured mixture of step(c) at 160 to 200 °C for 3 to 5 hrs; wherein steps (b) to (d) were performed in an atmosphere of nitrogen; and wherein the epoxide is trans-resveratrol trisepoxide of Formula (I), a tetraepoxide of Formula (II) or a diepoxide of Formula (III).[French]
L'invention concerne un procédé de durcissement d'un époxyde préparé à partir de composés phénoliques de telle sorte que la résine époxy durcie a une température de transition vitreuse (Tg) d'au moins 245°C. Le procédé comprend les opérations consistant à : (a) mélanger l'époxyde à une température de 25 à 100°C avec au moins un durcisseur, une polyamine aliphatique d'origine naturelle ou au moins un analogue de celle-ci ou une combinaison de ceux-ci, et au moins un antioxydant; (b) chauffer le mélange de l'étape (a) à 100 à 130°C pendant 1 à 3 heures; (c) chauffer le mélange partiellement durci de l'étape (b) à 130 à 160°C pendant 1 à 3 heures; et (d) chauffer le mélange sensiblement durci de l'étape (c) à 160 à 200°C pendant 3 à 5 heures; les étapes (b) à (d) ayant été effectuées dans une atmosphère d'azote; et l'époxyde étant le trisépoxyde de trans-resvératrol de Formule (I), un tétraépoxyde de Formule (II) ou un diépoxyde de Formule (III).