Abstract: A pressure-sensitive adhesive composition which comprises a pressure-sensitive adhesive polymer (A), a near-infrared absorbing dye (B), an ultraviolet absorber (C) and/or a hindered amine light stabilizer (D) is provided. The pressure-sensitive adhesive composition makes it possible to lessen deterioration of the near-infrared absorbing dye used by ultraviolet rays. Also, the composition is suited for use in forming pressure-sensitive adhesive layers and the like for sticking together laminar materials forming plasma displays and the like, can combine the functions of the respective layers in the plasma display front face plate in the pressure-sensitive adhesive layer formed, is capable of absorbing near-infrared rays as well as ultraviolet rays and, further, exhibits a color tone-adjusting function.

Abstract: The present invention provides an emulsion for pressure-sensitive adhesive, and a pressure-sensitive adhesive product which exhibits high water resistance and high adhesion properties. The emulsion for pressure-sensitive adhesive includes as essential components: a pressure-sensitive adhesive polymer (A) having a glass-transition temperature of −80 to −20° C., a weight-average molecular weight of 150,000 or larger, and a carboxylic acid value of 30 or smaller; a rosin derivative (B) having a weight-average molecular weight of 100,000 or smaller, and containing at least part of the carboxyl groups being alkali salt with a carboxylic acid value of 190 or larger before alkalization; and a compound (C) having a weight-average molecular weight of 100,000 or smaller, and having no carboxyl group but having at least one functional group reactive with a carboxyl group in its molecule.

Abstract: The present invention discloses a water-dispersion type pressure-sensitive adhesive composition, a method for producing the same, and a pressure-sensitive adhesive product employng the same. With the present invention, the hydrophilic nature of dispersant (C) can be nullified by reacting a compound (B), containing a metal having a valence of at least two or having a specific functional group having reactivity, with the functional groups of dispersant (C), with the result that while being a water dispersion type pressure-sensitive adhesive composition, it displays excellent water resistance properties on a par with pressure-sensitive adhesives made from solvent type pressure-sensitive adhesive compositions.