Patent classifications
C09J171/00
Photocurable adhesive composition
Provided is a method of manufacturing a liquid crystal panel employing a photocurable adhesive composition which causes no damage to adherends during bonding and which, when used in bonding rugged adherends, can bond the adherends without forming a gap therebetween. The photocurable adhesive composition of the inventive method comprises (A) 100 parts by mass of a urethane (meth)acrylate oligomer having a weight-average molecular weight of 20,000 to 100,000, (B) 5 parts to 70 parts by mass of a phenoxy resin, and (C) 0.1 parts to 10 parts by mass of a photopolymerization initiator. The uncured composition has a loss tangent (loss modulus/storage modulus) of less than 1 at 25° C. and the temperature at which the loss tangent of the uncured composition reaches 1 or more is 80° C. or less.
Photocurable adhesive composition
Provided is a method of manufacturing a liquid crystal panel employing a photocurable adhesive composition which causes no damage to adherends during bonding and which, when used in bonding rugged adherends, can bond the adherends without forming a gap therebetween. The photocurable adhesive composition of the inventive method comprises (A) 100 parts by mass of a urethane (meth)acrylate oligomer having a weight-average molecular weight of 20,000 to 100,000, (B) 5 parts to 70 parts by mass of a phenoxy resin, and (C) 0.1 parts to 10 parts by mass of a photopolymerization initiator. The uncured composition has a loss tangent (loss modulus/storage modulus) of less than 1 at 25° C. and the temperature at which the loss tangent of the uncured composition reaches 1 or more is 80° C. or less.
NOVEL COMPOSITIONS WHICH ARE CROSS-LINKABLE BY HEATING, AND CORRESPONDING SELF-ADHESIVE ARTICLES
1) A heat-crosslinkable adhesive composition, comprising: at least one polymer (A) comprising a hydrolyzable alkoxysilane group; at least one tackifying resin (B); at least one silsesquioxane resin (C); and at least one crosslinking catalyst (D).
2) A self-adhesive article comprising a support layer coated with a self-adhesive layer consisting of the adhesive composition in the crosslinked state.
NOVEL COMPOSITIONS WHICH ARE CROSS-LINKABLE BY HEATING, AND CORRESPONDING SELF-ADHESIVE ARTICLES
1) A heat-crosslinkable adhesive composition, comprising: at least one polymer (A) comprising a hydrolyzable alkoxysilane group; at least one tackifying resin (B); at least one silsesquioxane resin (C); and at least one crosslinking catalyst (D).
2) A self-adhesive article comprising a support layer coated with a self-adhesive layer consisting of the adhesive composition in the crosslinked state.
CONDUCTIVE COMPOSITION AND ELECTRONIC PARTS USING THE SAME
A conductive composition, which can form bonded portions and is capable of maintaining a thickness of the bonded portions and bonding strength, and which includes: (A) silver fine particles having a number average particle diameter of primary particles of 40 nm to 400 nm, (B) a solvent, and (C) thermoplastic resin particles having a maximal value of an endothermic peak in a DSC chart, determined by a measurement using a differential scanning calorimeter, within a range of 80° C. to 170° C.
ADHESIVE
Described herein is a two-part condensation curable silyl-modified polymer based adhesive composition suitable for the adhesion of a front lens having an anti-haze coating onto a lamp body for lighting applications. Also described herein are lamps comprising a lamp body and a front lens utilizing the adhesive composition to adhere the front lens to the lamp body while generally preserving the integrity of the anti-haze coating.
ADHESIVE
Described herein is a two-part condensation curable silyl-modified polymer based adhesive composition suitable for the adhesion of a front lens having an anti-haze coating onto a lamp body for lighting applications. Also described herein are lamps comprising a lamp body and a front lens utilizing the adhesive composition to adhere the front lens to the lamp body while generally preserving the integrity of the anti-haze coating.
ONE-PART ADHESIVE FOR THERMOPLASTIC URETHANES
A one-part adhesive including a grafted phenoxy resin, a polymaleimide compound, an organic carbonate, and an optional silane adhesion promoter is described. More particularly, the grafted phenoxy resin includes carboxylic acid and acrylate ester functionality. Methods of using adhesives to bond a thermoplastic urethane to a rigid substrate, e.g., in an injection or compression molding process, are also described.
ONE-PART ADHESIVE FOR THERMOPLASTIC URETHANES
A one-part adhesive including a grafted phenoxy resin, a polymaleimide compound, an organic carbonate, and an optional silane adhesion promoter is described. More particularly, the grafted phenoxy resin includes carboxylic acid and acrylate ester functionality. Methods of using adhesives to bond a thermoplastic urethane to a rigid substrate, e.g., in an injection or compression molding process, are also described.
ADHESIVE COMPOSITION, THERMOSETTING ADHESIVE SHEET, AND PRINTED WIRING BOARD
An adhesive composition having a low dielectric constant, low dielectric loss tangent, excellent folding endurance, and excellent heat resistance. The adhesive composition includes: with respect to the total of 100 parts by mass of the adhesive composition, 70 to 90 parts by mass of the styrene elastomer; 5 to 25 parts by mass of a modified polyphenyleneether resin having a polymerizable group at an end; totally 10 parts by mass or less of an epoxy resin and an epoxy resin curing agent, wherein the styrene ratio of the styrene elastomer is less than 42%.