The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2020
Filed:
May. 18, 2017
Henkel Ag & Co. Kgaa, Duesseldorf, DE;
Hongyu Wang, Shanghai, CN;
Chunfu Chen, Yok, CN;
Daoqiang Lu, Chandler, AZ (US);
Minrui Li, Shanghai, CN;
Yinxiao Yuan, Shanghai, CN;
Henkel AG & Co. KGaA, Duesseldorf, DE;
Abstract
The present invention provides a photo-curable adhesive composition for display panel assembly comprising a) at least one polyurethane acrylate having Tg value from −70 to 20° C.; b) at least one (meth)acrylate monomer; c) at least one chain transfer agent; d) at least two thixotropy agents, wherein first thixotropy agent is selected from the group consisting of hydrophobic fumed silica, hydrophilic fumed silica and mixtures thereof and second thixotropy agent is selected from the group consisting of modified urea, polyhydroxycarboxylic acid esters and mixtures thereof; e) at least one photoinitiator; f) at least one plasticizer; and g) at least one defoamer. The photo-curable adhesive composition according to the present invention can be used in bonding two transparent substrates together or in bonding one transparent substrate and one opaque substrate together. Furthermore, the composition according to the present invention can be used in a process of making an optical assembly.