WO2026062614 - ROSIN ESTER-BASED COMPOSITIONS AND APPLICATIONS THEREOF
National phase entry is expected:
Publication Number
WO/2026/062614
Publication Date
26.03.2026
International Application No.
PCT/IB2025/059555
International Filing Date
23.09.2025
Title **
[English]
ROSIN ESTER-BASED COMPOSITIONS AND APPLICATIONS THEREOF
[French]
COMPOSITIONS À BASE D'ESTER DE COLOPHANE ET LEURS APPLICATIONS
Applicants **
KRATON CORPORATION
Inventors
SCHAAPMAN, Mark
NEUMANN, Brett
ZEEMAN, Ronnie
Priority Data
63/697,681
23.09.2024
US
Application details
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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.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2285 | |
| EPO | Filing, Examination, Granting | 12927 | |
| Japan | Filing, Examination, Granting | 2483 | |
| South Korea | Filing, Examination, Granting | 2577 | |
| USA | Filing, Examination, Granting | 7340 |
Total:
27,612
Abstract[English]
Rosin ester-based compositions are disclosed comprising (a) at least one polymer and (b) a rosin ester formed by esterification of a rosin or rosin acid with a cyclic polyol. The cyclic polyol is defined by a carbon-to-oxygen ratio of 1.0 to 20 and < 5 rotatable carbon– carbon bonds, thereby providing enhanced rigidity and compatibility. The resulting rosin ester can be employed directly without further modification and exhibits advantageous performance in polymer systems. Applications include hot-melt and pressure-sensitive adhesives, tire and rubber compositions based on diene rubbers, and other polymer-based materials requiring improved thermal stability, clarity, and adhesion balance.[French]
L'invention concerne des compositions à base d'ester de colophane comprenant (a) au moins un polymère et (b) un ester de colophane formé par estérification d'une colophane ou d'un acide de colophane avec un polyol cyclique. Le polyol cyclique est défini par un rapport carbone-oxygène de 1,0 à 20 et par moins de 5 liaisons carbone-carbone rotatives, ce qui lui confère une rigidité et une compatibilité accrues. L'ester de colophane obtenu peut être utilisé directement sans modification supplémentaire et présente des performances avantageuses dans des systèmes polymères. Des applications incluent des adhésifs thermofusibles et sensibles à la pression, des compositions de pneu et de caoutchouc à base de caoutchoucs diéniques, et d'autres matériaux polymères nécessitant une stabilité thermique, une transparence et un équilibre d'adhérence améliorés.