Lintec Corporation

Linetec Corporation

Huminori Ikeda

Atsushi Tezuna

Yumiko Matsubayashi

Osamu Kanazawa

Yoshitomo Ono

Atsuhiro Tanaka

Takamasa Kase

Soichiro Fujinaga

Fumio Hayakawa

The present invention is a paint coat-protecting removable pressure-sensitive adhesive sheet comprising a base sheet, and a pressure-sensitive adhesive layer that is provided on the base sheet, the pressure-sensitive adhesive layer being formed of an emulsion pressure-sensitive adhesive composition that includes an emulsion of an ethylene-vinyl carboxylate copolymer as a main component. The present invention provides a paint coat-protecting removable pressure-sensitive adhesive sheet that does not cause swelling, whitening, and adhesive transfer even when the pressure-sensitive adhesive sheet is attached to the surface of a paint coat that has not been sufficiently dried (i.e., contains a small amount of solvent) or has not been sufficiently cured after drying, and removed from the paint coat.

Paint coat-protecting removable pressure-sensitive adhesive sheet

The present invention provides a high-gloss pressure-sensitive adhesive sheet according to which, even if a surface thereof becomes uneven due to grit or the like, the evenness can be recovered. In a pressure-sensitive adhesive sheetA comprising a substrate filmA having a specular gloss Gs (60&#xb0;) of not less than 80% and a pressure-sensitive adhesive layer, the substrate filmA is made to have a storage modulus at some temperature between 70&#xb0; C. and 90&#xb0; C. in a range of from 1.0&#xd7;10to 2.8&#xd7;10MPa, and is preferably made to have a storage modulus at from 5 to 35&#xb0; C. in a range of from 1.0&#xd7;10to 5.0&#xd7;10MPa.

High-gloss pressure-sensitive adhesive sheet

According to the present invention, a pressure-sensitive adhesive for a motor vehicle brake disc antirust film, which comprises an acrylic resin based pressure-sensitive adhesive prepared by crosslinking an acrylic copolymer containing a unit based on a (meth)acrylamide based monomer and having a weight average molecular weight of 500,000 to 1,100,000 with a polyisocyanate compound by the utilization of the unit based on a (meth)acrylamide based monomer as a crosslinking base point. The pressure-sensitive adhesive for a motor vehicle brake disc antirust film can provide a motor vehicle brake disc antirust film which is hardly peeled off when adhered onto a motor vehicle wheel.

Pressure-sensitive adhesive for motor vehicle brake disc antirust film

A primer for adhesive sheets which comprises as a main component thereof an oligomer comprising a reaction product of a portion of an isocyanurate compound which is a trimer of tolylene diisocyanate and a polyol and has a number-average molecular weight in a range of 700 to 50,000; an article comprising an adhesive sheet attached to an adherend using a layer of the above primer as the intermediate layer; a process for producing an article attached with an adhesive sheet which comprises coating an adherend with the primer and attaching the adhesive sheet to the article when 1 minute to 24 hours has passed after the coating. Peeling and displacement of the adhesive sheet can be prevented and excellent properties can be maintained even when the adhesive sheet is attached to an article in a short time after the article is coated with the primer.

Growing community of inventors

Tokyo, Japan

Atsushi Tezuna