Pressure-sensitive adhesive
AssigneeLG Chem, Ltd.
InventorsJin Ho SON, Hui Je LEE
Life of this patent
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Abstract
The present application may provide a pressure-sensitive adhesive, which is applied to a flexible device, thereby effectively responding to repeated deformation and recovery, causing no defects (for example, observation of deformation traces and the like) before and after deformation, having excellent cuttability and workability, and causing no lifting, delamination, and/or bubble generation, and a use thereof.
Claims16
A pressure-sensitive adhesive comprising a cross-linked acrylic copolymer, and
- having a storage elastic modulus at −20° C. of 100,000 Pa or less,
- a peel force of 1,700 gf/inch or more to glass, and
- haze of 0.5% or less.
A pressure-sensitive adhesive comprising a cross-linked acrylic copolymer, and
- having an elastic modulus change rate of 2500 or less according to Equation 1 below, and
- haze of 0.5% or less:
- Elastic
-
- modulus
-
- change
-
- rate
- =
- (
- M
-
- 20
- -
- M
-
- 25
- )
- /
- 45
- [
- Equation
-
- l
- ]
- wherein, M20 is a storage elastic modulus of the pressure-sensitive adhesive at −20° C., and M25 is a storage elastic modulus of the pressure-sensitive adhesive at 25° C.
A pressure-sensitive adhesive comprising a cross-linked acrylic copolymer and a compound of Formula 1 below:
- wherein, X is carbon or nitrogen, R1 to R3 are each independently hydrogen, an alkyl group, or a hydroxy group, and R4 is a substituent of Formula 2 below, but when X is nitrogen, R4 is not present, and at least one of R1 to R3 is a hydroxy group:
- wherein, R5 is a single bond, an oxygen atom, -L1-C(═O)-L2-, -L1-C(═O)—O-L2-, or -L1-O—C(═O)-L2-, where L1 and L2 are each independently a single bond, an alkylene group, or an alkylidene group, R6 is an alkylidene group or an alkylene group, R7 is a single bond, —O—C(═O)—, —C(═O)—, or —C(═O)—O—, R8 and R9 are each independently hydrogen or an alkyl group, and n is a number in a range of 0 to 10.
Dependencies are inferred from the claim text.