A sealant and a preparation method thereof, a display panel motherboard and a manufacturing method thereof are disclosed. The sealant includes a main adhesive material and a water swellable material dispersed and doped in the main adhesive material. The sealant and the preparation method thereof, the display panel motherboard and the manufacturing method thereof are capable of solving a problem of a notch formed in a sealant where a etchant flows into the display panel unit when the display panel mother board is subjected to a thinning treatment.

A sealant and a preparation method thereof, a display panel motherboard and a manufacturing method thereof are disclosed. The sealant includes a main adhesive material and a water swellable material dispersed and doped in the main adhesive material. The sealant and the preparation method thereof, the display panel motherboard and the manufacturing method thereof are capable of solving a problem of a notch formed in a sealant where a etchant flows into the display panel unit when the display panel mother board is subjected to a thinning treatment.

Provided are a pressure-sensitive adhesive composition, a pressure-sensitive adhesive optical laminate, a pressure-sensitive adhesive polarizing plate and a display device. The pressure-sensitive adhesive composition offers a pressure-sensitive adhesive that has excellent durability and processability in manufacturing due to increased hardness even when the pressure-sensitive adhesive layer is formed thinner than a typical adhesive composition, and that can prevent a pressure mark and leakage of the pressure-sensitive adhesive, as well as a bending problem generated when applied on an optical member such as a polarizing plate, etc.

Provided are a pressure-sensitive adhesive composition, a pressure-sensitive adhesive optical laminate, a pressure-sensitive adhesive polarizing plate and a display device. The pressure-sensitive adhesive composition offers a pressure-sensitive adhesive that has excellent durability and processability in manufacturing due to increased hardness even when the pressure-sensitive adhesive layer is formed thinner than a typical adhesive composition, and that can prevent a pressure mark and leakage of the pressure-sensitive adhesive, as well as a bending problem generated when applied on an optical member such as a polarizing plate, etc.

Provided are a pressure-sensitive adhesive composition, a pressure-sensitive adhesive optical laminate, a pressure-sensitive adhesive polarizing plate and a display device. The pressure-sensitive adhesive composition offers a pressure-sensitive adhesive that has excellent durability and processability in manufacturing due to increased hardness even when the pressure-sensitive adhesive layer is formed thinner than a typical adhesive composition, and that can prevent a pressure mark and leakage of the pressure-sensitive adhesive, as well as a bending problem generated when applied on an optical member such as a polarizing plate, etc.

A method of bonding a vulcanized elastomer is provided comprising the steps of; providing an adhesive comprising a primary acrylate monomer, a reactive flexibilizing monomer, and further optionally comprising a toughener, an adhesion promoter and a free radical initiator, then depositing the adhesive on at least one surface of an elastomer or a second substrate, wherein the elastomer is a vulcanized elastomer, then bringing the elastomer substrate and second substrate together with the adhesive disposed therebetween, and allowing the adhesive to cure and bond the elastomer and second substrate together at a temperature of less than about 100° C. to produce a bonded structure.

A method of bonding a vulcanized elastomer is provided comprising the steps of; providing an adhesive comprising a primary acrylate monomer, a reactive flexibilizing monomer, and further optionally comprising a toughener, an adhesion promoter and a free radical initiator, then depositing the adhesive on at least one surface of an elastomer or a second substrate, wherein the elastomer is a vulcanized elastomer, then bringing the elastomer substrate and second substrate together with the adhesive disposed therebetween, and allowing the adhesive to cure and bond the elastomer and second substrate together at a temperature of less than about 100° C. to produce a bonded structure.

Disclosed is a method for preparing an acrylic rubber roll. The method includes mixing and stirring 50-77 wt % 2-ethylhexyl acrylate, 2-10 wt % acrylic acid, 20-40 wt % 2-hydroxyethyl acrylate, and 0.1-0.5 wt % curing agent at room temperature to form a mixture; adding 0.1-0.2 wt % photoinitiator into the mixture, and continuing to stir until the photoinitiator is fully dissolved in order to form an acrylic composition; irradiating the acrylic composition with UV light to crosslink and cure the acrylic composition in order to obtain an acrylic tape; and cutting the acrylic tape according to a size of a plastic rubber roll shaft, and evenly sticking the acrylic tape to a freely-rotatable rubber roll while avoiding air bubbles so as to obtain the acrylic rubber roll.

Provided are: a polymerizable monomer excellent in mechanical strength of its cured product and excellent also in handling property with low viscosity even under a room temperature environment, specifically, a polymerizable monomer, which is represented by the following general formula (1):

##STR00001##

in the general formula (1), Ar.sup.1 and Ar.sup.2 each represent an aromatic group having a valence selected from divalence to tetravalence, L.sup.1 and L.sup.2 each represent a divalent hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 10 and containing at least one hydroxy group, and may be identical to or different from each other, R.sup.1 and R.sup.2 each represent hydrogen or a methyl group, q represents 0 or 1, and m1 and m2 each represent 1 or 2; and a method of producing the polymerizable monomer, a curable composition and a resin member each using the polymerizable monomer.

Provided are: a polymerizable monomer excellent in mechanical strength of its cured product and excellent also in handling property with low viscosity even under a room temperature environment, specifically, a polymerizable monomer, which is represented by the following general formula (1):

##STR00001##

in the general formula (1), Ar.sup.1 and Ar.sup.2 each represent an aromatic group having a valence selected from divalence to tetravalence, L.sup.1 and L.sup.2 each represent a divalent hydrocarbon group having a main chain with a number of atoms within a range of from 2 to 10 and containing at least one hydroxy group, and may be identical to or different from each other, R.sup.1 and R.sup.2 each represent hydrogen or a methyl group, q represents 0 or 1, and m1 and m2 each represent 1 or 2; and a method of producing the polymerizable monomer, a curable composition and a resin member each using the polymerizable monomer.