Lintec Corporation

Nippon Mining & Metals Co., Ltd.

Satoshi Kawada

Kiichiro Kato

Shigeru Saito

Yumiko Amino

Kazue Uemura

Yoshitomo Ono

Takashi Sugino

Tetsuyuki Utagawa

Tatsuya Tsukida

Takamasa Kase

Tomio Hatanaka

Koji Tsuchibuchi

Kouji Tsuchiya

Haruya Yamada

Kenichi Kamimura

Hanako Ikeda

An electrically peelable pressure sensitive adhesive composition, which contains an acrylic polymer (A), a (poly)alkylene polyol (B) having a number average molecular weight of no greater than 2000, and an ammonium salt (C), has a high adhesiveness before voltage application, but the adhesiveness can decrease effectively by voltage application for a short time.

Electrically peelable adhesive composition and electrically peelable adhesive sheet, and method for using electrically peelable adhesive sheet

A pressure sensitive adhesive sheet including, on a substrate or a release material, a resin layer including a resin part (X) containing a resin as a main component, and a particle part (Y) consisting of fine particles and having a surface (&#x3b1;) having pressure sensitive adhesiveness and one or more concave portions. When the surface (&#x3b1;) of the resin layer is adhered to a smooth surface of a light transmissive adherend to give a laminate, the areal ratio (S) of the attached area adhered to the smooth surface to the surface (&#x3b1;) is 10 to 95% at 23&#xb0; C. and 50% RH, and the area increase rate {[(S&#x2212;S)/S]&#xd7;100} is &#x2212;10 to 20% after heating of the smooth surface by statically leaving the laminate at 80&#xb0; C. for 30 minutes.

Adhesive sheet and method for producing same

The invention provides a method for analyzing minute amounts of Pd, Rh and Ru with high accuracy by a high-frequency plasma mass spectroscope. The method comprises (1) a step of pretreating a sample by an alkali fusion method using a sodium compound; and (2) a step of analyzing the pretreated sample using a high-frequency plasma mass spectroscope; wherein, in step (2), the distance between a sampling cone and a skimmer cone is adjusted such that the concentration ofArCu which interferes with Pd, the concentrations ofArCu andArArNa which interfere with Rh, and the concentrations ofArCu andArArNa which interfere with Ru are all equal to or less than 0.05 ppb.

Method for analyzing minute amounts of Pd, Rh and Ru, and high frequency plasma mass spectroscope used for same

A method for recording and erasure of images using a rewritable thermal label of the non-contact type which enables complete elimination of residual images after the erasure and repeated rewriting. The absorptivity of laser light used for the recording with the surface of the label is 50% or greater, the laser light irradiating the surface of the label for the recording has a wavelength of 700 to 1,500 nm and an amount of energy of irradiation of 5.0 to 15.0 mJ/mm, the product of the amount of energy of irradiation of the laser light and the absorptivity of the laser light during the recording is 3.0 to 14.0 mJ/mm, and the product of the amount of energy of irradiation of the laser light and the absorptivity of the laser light with the surface of the label during the erasure is 1.1 to 3.0 times as great as the corresponding product during the recording.

Method for recording and erasure of images using a rewritable thermal label of a non-contact type

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Koshigaya, Japan

Satoshi Kawada