Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive for labels excellent in initial adhesion, little in viscosity increase in winters, having viscosity stable with time, excellent in washability of a labeler, and having water resistance and bottle washability by an alkali comparable to an adhesive containing much casein. SOLUTION: The adhesive for labels comprises (A) a water-soluble resin that has a weight average mol.wt. (Mw) of 4,000-170,000 and an acid number of 30-260 and contains at least one selected from a carboxyl group, a carboxylate group and a carboxylic anhydride group and (B) casein. The labels obtained by coating the above adhesive for labels are also provided. The labels easily peel off when the bottles are washed with an alkali though they are suitably pasted on the glass bottles. Accordingly it is possible to promote the recycling of the containers. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive tape for processing a semiconductor wafer and the like, which can sufficiently reduce an amount of an adhesive compound remaining on a surface of an adherend after tape peeling.SOLUTION: An adhesive tape 100 according to a present embodiment for processing a semiconductor wafer and the like, comprises a base material layer 200 and an adhesive layer 300. The adhesive layer 300 is formed at least on one surface of the base material layer 200. Further, the adhesive layer 300 consists primarily of carboxyl polymer. The carboxyl polymer contains a radiation polymerizable compound (especially, urethane acrylate). The radiation polymerizable compound has a weight-average molecular weight of not less than 500 and not more than 3000, and has functional groups of not less than 5 and not more than 15.
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive tape for processing semiconductor wafers and the like, with which the quantity of an adhesive left on the surface of an adherend after the tape is peeled can be sufficiently reduced.SOLUTION: An adhesive tape 100 for processing semiconductor wafers and the like is provided with a base layer 200 and an adhesive layer 300. The adhesive layer 300 is formed on the base layer 200. Also, the adhesive layer 300 mainly comprises a carboxyl group-containing polymer. The carboxyl group-containing polymer contains urethane acrylate. The urethane acrylate has a weight average molecular weight of 1,000-20,000 and also has a number of functional groups of 10 functionalities or more.
Abstract:
PROBLEM TO BE SOLVED: To provide an adhesive comprising a photosensitive resin composition which has an excellent developability and in which the outgassing after the curing is enough decreased.SOLUTION: The adhesive is used to bond an optional substrate or members mutually by heating/pressurizing for 1-60 seconds under the condition of the temperature of 130-180°C and the pressure of 0.1-1.5 MPa, and the adhesive comprises the photosensitive resin composition that includes: (A) a binder polymer having a carboxyl group; (B) a photopolymerizable compound; (C) a photopolymerization initiator; (D) an inorganic filler; and (E) a compound having a hetero ring.