Patent application number | Description | Published |
20090017298 | Adhesive composition, adhesive optical film and image display device - An adhesive composition contains a copolymer obtained by preparing a monomer component containing an alkyl(meth)acrylate whose alkyl group has 4 to 18 carbon atoms, a carboxyl group-containing vinyl monomer and a phosphoric acid group-containing vinyl monomer as essential components, and containing, as an optional component, a copolymerizable vinyl monomer which is copolymerizable with the essential components so that an amount of the alkyl(meth)acrylate is from 60 to 99 parts by weight per 100 parts by weight of the monomer component, a total amount of the carboxyl group-containing vinyl monomer, the phosphoric acid group-containing vinyl monomer and the copolymerizable vinyl monomer is from 1 to 40 parts by weight per 100 parts by weight of the monomer component and polymerizing the monomer component; and a clay mineral so that an amount of the clay mineral is from 0.5 to 10 parts by weight per 100 parts by weight of the copolymer. | 01-15-2009 |
20110091716 | POLYESTER-BASED MASKING SHEET - The present invention relates to a polyester-based masking sheet including: a substrate; and a pressure-sensitive adhesive layer provided on the substrate, which contains a polyester resin obtained by condensation-polymerizing a plant-derived dicarboxylic acid with a plant-derived diol in a ratio such that a content of hydroxyl group in the diol is from 1.01 to 1.40 mol per 1.00 mol of carboxyl group contained in the dicarboxylic acid, and a tackifier in an amount of from 10 to 50 parts by weight per 100 parts by weight of the polyester resin, and is crosslinked by a crosslinking agent to have a gel fraction of 40 to 90%. | 04-21-2011 |
20120202058 | PRESSURE-SENSITIVE ADHESIVE SHEET FOR SURFACE PROTECTION - A surface-protecting pressure-sensitive adhesive sheet includes: a substrate; and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a crosslinking agent and a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, the polyester-based pressure-sensitive adhesive composition has a hydroxyl value of 20 to 60 mgKOH/g, and the pressure-sensitive adhesive layer has a gel fraction of 85 to 99% by weight. | 08-09-2012 |
20120208015 | THERMALLY REMOVABLE PRESSURE-SENSITIVE ADHESIVE SHEET - A thermally removable pressure-sensitive adhesive sheet includes a substrate and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, a foaming agent, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, and the polyester has a hydroxyl value of 1 to 60 mgKOH/g. | 08-16-2012 |
20120208016 | RADIATION-CURE REMOVAL TYPE PRESSURE-SENSITIVE ADHESIVE SHEET - A radiation-cure removable type pressure-sensitive adhesive sheet includes: a pressure-sensitive adhesive layer made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, a radiation-cure resin, a radiation reaction initiator, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a glass transition temperature of −70 to −20° C., a weight average molecular weight of 20,000 to 200,000, and a hydroxyl value of 1 to 60 mgKOH/g, the composition contains 30 to 70 parts by weight of the radiation-cure resin based on 100 parts by weight of the polyester and contains 3 to 10% by weight of the radiation reaction initiator based on the amount of the radiation-cure resin. | 08-16-2012 |
20120208017 | PRESSURE-SENSITIVE ADHESIVE TAPE FOR MASKING - A masking pressure-sensitive adhesive tape includes a substrate and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, the polyester has a hydroxyl value of 1 to 60 mgKOH/g, and the pressure-sensitive adhesive layer has a gel fraction of 40 to 90% by weight. | 08-16-2012 |
20120208955 | DOUBLE-SIDED PRESSURE-SENSITIVE ADHESIVE SHEET - A double sided pressure-sensitive adhesive sheet includes a pressure-sensitive adhesive layer made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, a tackifier resin, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, the polyester has a hydroxyl value of 1 to 60 mgKOH/g, the adhesive composition contains 10 to 70 parts by weight of the tackifier resin based on 100 parts by weight of the polyester, and the pressure-sensitive adhesive layer has a gel fraction of 50 to 90% by weight. | 08-16-2012 |
20120232226 | PRESSURE-SENSITIVE ADHESIVE COMPOSITION - The present invention has an object to provide a pressure-sensitive adhesive composition that provides a polyester-based pressure-sensitive adhesive capable of realizing both of heat resistance and adhesive force at high levels and a pressure-sensitive adhesive sheet having a polyester-based pressure-sensitive adhesive. The pressure-sensitive adhesive composition provided by the present invention contains a polyester resin A with Mw of 4×10 | 09-13-2012 |
20120244328 | ADHESIVE SHEET - The present invention provides a pressure-sensitive adhesive sheet containing a pressure-sensitive adhesive layer that contains a polyester resin as a main component, in which the pressure-sensitive adhesive layer having a laminate structure that contains at least one layer LA where a polyester resin E | 09-27-2012 |
20120301717 | POLYESTER ADHESIVE COMPOSITION - The present invention has an object to provide a solvent-free polyester-based adhesive composition having good coatability and capable of forming an adhesive that shows good adhesion performance. The present invention provides a polyester-based adhesive composition containing a polyester having Mw of from 1×10 | 11-29-2012 |