WO2024194229 - OPTICALLY TRANSPARENT ADHESIVE, PROCESS FOR PRODUCING IT, ADHESIVE TRANSFER TAPE COMPRISING THE ADHESIVE AND USE OF THE ADHESIVE
National phase entry is expected:
Publication Number
WO/2024/194229
Publication Date
26.09.2024
International Application No.
PCT/EP2024/057102
International Filing Date
18.03.2024
Title **
[English]
OPTICALLY TRANSPARENT ADHESIVE, PROCESS FOR PRODUCING IT, ADHESIVE TRANSFER TAPE COMPRISING THE ADHESIVE AND USE OF THE ADHESIVE
[French]
ADHÉSIF OPTIQUEMENT TRANSPARENT, SON PROCESSUS DE PRODUCTION, RUBAN DE TRANSFERT ADHÉSIF COMPRENANT L'ADHÉSIF ET UTILISATION DE L'ADHÉSIF
Applicants **
TESA SE
Hugo-Kirchberg-Str. 1
22848 Norderstedt, DE
Inventors
HANISCH, Mathias
c/o tesa SE; Hugo-Kirchberg-Str. 1
22848 Norderstedt, DE
FISCHER, Alexander
c/o tesa SE; Hugo-Kirchberg-Str. 1
22848 Norderstedt, DE
MOON, Sie-Seong
c/o tesa SE; Hugo-Kirchberg-Str. 1
22848 Norderstedt, DE
Priority Data
102023107341.9
23.03.2023
DE
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
| * | |
| * | |
International Searching Authority |
EPO
* |
| Applicant's Legal Status |
Legal Entity
* |
| * | |
| * | |
| * | |
| * | |
| Entry into National Phase under |
Chapter I
* |
| Translation |
|
Recalculate
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing | 1072 | |
| EPO | Filing, Examination | 4639 | |
| Japan | Filing | 535 | |
| South Korea | Filing | 576 | |
| USA | Filing, Examination | 3835 |
Total: 10657 USD
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
The present invention relates to an optically transparent adhesive, to a process for producing it and to an adhesive transfer tape comprising the adhesive. The present invention also relates to the use of the adhesive. In accordance with the invention is an optically transparent adhesive for bonding displays, holographic optical elements, lenses and glasses, wherein the adhesive contains 80 to 100% by weight of at least one (meth)acrylate-containing copolymer A, wherein the copolymer A is composed of 5 to 30% by weight of hydroxy group- containing (meth)acrylate monomers, and wherein the adhesive has a storage modulus G' at 25°C and 40 Hz of less than 100 kPa, and wherein the adhesive has a HAZE value of less than 5%, preferably 0% to less than 1%, and a transmission at 400 nm to 800 nm of more than 90%, preferably more than 95%, more preferably 98 to 100%, very preferably more than 99 to 100%, in each case measured according to ASTM D1003-13.[French]
La présente invention concerne un adhésif optiquement transparent, son processus de production et un ruban de transfert adhésif comprenant l'adhésif. La présente invention concerne également l'utilisation de l'adhésif. L'invention concerne un adhésif optiquement transparent pour coller des écrans, des éléments optiques holographiques, des lentilles et des verres, l'adhésif contenant de 80 à 100% en poids d'au moins un copolymère A contenant du (méth)acrylate, le copolymère A étant composé de 5 à 30% en poids de monomères de (méth)acrylate contenant un groupe hydroxy, et l'adhésif ayant un module de stockage G' à 25°C et 40 Hz inférieur à 100 kPa, et l'adhésif ayant une valeur de HAZE inférieure à 5%, de préférence de 0% à moins de 1%, et une transmission à 400 nm à 800 nm de plus de 90%, de préférence plus de 95%, plus préférablement de 98 à 100%, de manière très préférée de plus de 99 à 100%, dans chaque cas mesurée selon la norme ASTM D1003-13.