Benq Materials Corporation

Wen-Chun Chen

Yan-Chiuan Liou

Chung-Han Lee

Pao-Hsun Wu

Yi-Ting Tseng

The present disclosure relates to a (meth)acrylate adhesive composition comprising a (meth)acrylated polymer, a crosslinking agent and a silane copolymer, wherein the silane copolymer comprises 70 to 95 weight parts of an acrylate monomer containing C-Calkyl group and 5 to 30 weight parts of a silane represented by the following formula (I):X&#x2014;R&#x2014;SiR(OR)&#x2003;&#x2003;(I)wherein the weight-average molecular weight of the silane copolymer is ranging from 40,000 to 150,000. The silane copolymer can enhance the initial adhesion strength, rework ability and weather resistance of the (meth)acrylate adhesive composition. Furthermore, the (meth)acrylate adhesive composition can be used in the flexible optical film with a good bending restoring property and adhesion.

(Meth)acrylate adhesive composition

The disclosure relates to a (meth)acrylate adhesive composition comprising a (meth)acrylate polymer, a cross-linking agent and a reactive siloxane copolymer with the acid value of the (meth)acrylate polymer is between 0 and 15 mgKOH/g, and the reactive siloxane copolymer derived from the copolymerization of a silane compound represented by the formula: X&#x2014;R&#x2014;SiR(OR)(I), a non-hydroxyl acrylate monomer containing C-Calkyl group and a hydroxyl (meth)acrylate monomer, wherein the use amount of the reactive siloxane copolymer is between 0.1 parts to 6 parts by weight per hundred parts by weight of the (meth)acrylate polymer, wherein X is an acryl group or a (methyl)acryloxy group, Ris a C-Calkyl group or alkoxy group, Rand Rrespectively are C-Calkyl group, and a is an integer between 1 to 3. The present (meth)acrylate adhesive composition can provide an enhanced adhesion and weather resistance, also an enhanced stability over time and storage stability, when be used in polarizer bonding, can show a satisfied adhesion reliability and a proper rework ability.

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Taoyuan, Taiwan

Wen-Chun Chen