Adhesive composition and adhesive sheet and adhesive optical...

Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer

Reexamination Certificate

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C428S423100

Reexamination Certificate

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06929855

ABSTRACT:
An optical component in combination with an adhesive composition, wherein the adhesive composition comprises (A) a copolymer of a (meth)acrylic ester having a molecular weight of 500,000 to 200,000 and (E) a crosslinking agent comprising an adduct of a polyisocyanate comprising (a) isocyanate difunctional adducts of a diisocyanate with a diol and (b) adducts of a diisocyanate with a polyhydric alcohol, having an isocyanate functionality of three or greater, in a weight ratio of the amounts of (a) to (b) of 95:5 to 10:90. An adhesive sheet and an adhesive optical component comprising a layer of the adhesive composition. The adhesive composition exhibits excellent adhesion with adherents, and stress relaxation and follows changes in the dimensions of substrates.

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“Encyclopedia of Polymer Science and Engineering”, vol. 2, pp. 75-78, (1984), Wiley Interscience Publishers, New York.
U.S. Appl. No. 09/829,061 to Takashi Suzuki et al.

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