WO2026132243 - ACRYLATE TACKIFIER FROM SOLVENT-FREE PROCESS
National phase entry is expected:
Publication Number
WO/2026/132243
Publication Date
25.06.2026
International Application No.
PCT/EP2025/088036
International Filing Date
18.12.2025
Title **
[English]
ACRYLATE TACKIFIER FROM SOLVENT-FREE PROCESS
[French]
AGENT POISSEUX À BASE D'ACRYLATE AU MOYEN D'UN PROCÉDÉ SANS SOLVANT
Applicants **
TESA SE
Inventors
NGUYEN, Duc Hung
REN, Yanjie
ELLRINGMANN, Kai
Priority Data
24221635.6
19.12.2024
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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| * | |
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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 | 1944 | |
| EPO | Filing, Examination, Granting | 8240 | |
| Japan | Filing, Examination, Granting | 2136 | |
| South Korea | Filing, Examination, Granting | 1915 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
18,975
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Abstract[English]
A method for efficiently manufacturing low molecular weight poly(meth)acrylates that can be used as tackifier resins in pressure-sensitive adhesives should be provided. This is achieved with a Method for manufacturing a packaged poly(meth)acrylate having a weight-average molecular weight, determined by gel permeation chromatography as described herein, of 500 – 10,000 g/mol, the method comprising the steps of a) providing a composition comprising - a monomer mixture for producing a poly(meth)acrylate; - a polymerization initiator; and - a molecular weight-controlling substance contained in a packaging material; and b) polymerizing the composition to give a packaged poly(meth)acrylate. Further subject matters of the invention are a packaged poly(meth)acrylate obtained by a method according to the invention, a method for manufacturing a pressure-sensitive adhesive and a pressure-sensitive adhesive.[French]
L'invention concerne un procédé de fabrication efficace de poly(méth)acrylates de faible poids moléculaire qui peuvent être utilisés en tant que résines poisseuses dans des adhésifs sensibles à la pression. Ceci est obtenu avec un procédé de fabrication d'un poly(méth)acrylate emballé ayant un poids moléculaire moyen en poids, déterminé par chromatographie par perméation de gel tel que décrit ici, de 500 à 10 000 g/mol, le procédé comprenant les étapes consistant à a) fournir une composition comprenant un mélange de monomères pour produire un poly(méth)acrylate ; un initiateur de polymérisation ; et une substance de régulation de poids moléculaire contenue dans un matériau d'emballage ; et b) polymériser la composition pour obtenir un poly(méth)acrylate emballé. D'autres objets de l'invention sont un poly(méth)acrylate emballé obtenu par un procédé selon l'invention, un procédé de fabrication d'un adhésif sensible à la pression et un adhésif sensible à la pression.