摘要:
A pressure-sensitive adhesive layer for an optical film made from an aqueous dispersion-type pressure-sensitive adhesive composition, wherein the aqueous dispersion-type pressure-sensitive adhesive composition is an aqueous dispersion comprising a water-dispersible (meth)acryl-based copolymer (A) having a glass transition temperature from −55° C. to less than 0° C.; and a water-soluble or water-dispersible component (B) having a glass transition temperature of 0° C. or more, a mixture ratio (A)/(B) is in the range of 50-97/3-50, the component (B) forms domains with maximum lengths between 1 nm and 200 nm in a resin component made of the (meth)acryl-based copolymer (A), and the pressure-sensitive adhesive layer has a haze value (H20) of 1% or less when having a thickness of 20 μm. The pressure-sensitive adhesive layer for an optical film, which is made from an aqueous dispersion-type pressure-sensitive adhesive composition has good reworkability or recyclability, and has a sufficient level of durability.
摘要:
A pressure-sensitive adhesive layer for an optical film made from an aqueous dispersion-type pressure-sensitive adhesive composition, wherein the aqueous dispersion-type pressure-sensitive adhesive composition is an aqueous dispersion comprising a water-dispersible (meth)acryl-based copolymer (A) having a glass transition temperature from −55° C. to less than 0° C.; and a water-soluble or water-dispersible component (B) having a glass transition temperature of 0° C. or more, a mixture ratio (A)/(B) is in the range of 50-97/3-50, the component (B) forms domains with maximum lengths between 1 nm and 200 nm in a resin component made of the (meth)acryl-based copolymer (A), and the pressure-sensitive adhesive layer has a haze value (H20) of 1% or less when having a thickness of 20 μm. The pressure-sensitive adhesive layer for an optical film, which is made from an aqueous dispersion-type pressure-sensitive adhesive composition has good reworkability or recyclability, and has a sufficient level of durability.
摘要:
An aqueous dispersion-type pressure-sensitive adhesive composition for an optical film of the invention includes a emulsion particles of a core-shell structure, wherein the emulsion particles include a (meth)acryl-based copolymer (A) having a glass transition temperature of −55° C. to 0° C. and a (meth)acryl-based copolymer (B) having a glass transition temperature of 0° C. to 180° C., in a single emulsion particle, one of the copolymers (A) and (B) forms a core layer, and another forms a shell layer, at least one of the copolymers (A) and (B) contains a carboxyl group-containing monomer, a difference of the glass transition temperatures between the copolymers (A) and (B) is 50° C. or more, and a ratio (A)/(B) (by weight) is in the range of 50/50 to 90/10. The above composition can form a pressure-sensitive adhesive layer which is prevented from peeling in a moist environment and also prevented from peeling over time after taken out of a high-temperature moist environment.
摘要:
An aqueous dispersion-type pressure-sensitive adhesive composition for an optical film includes a emulsion particles of a core-shell structure, wherein the emulsion particles include a (meth)acryl-based copolymer (A) having a glass transition temperature of −55° C. to 0° C. and a (meth)acryl-based copolymer (B) having a glass transition temperature of 0° C. to 180° C., in a single emulsion particle, one of the copolymers (A) and (B) forms a core layer, and another forms a shell layer, at least one of the copolymers (A) and (B) contains a carboxyl group-containing monomer, a difference of the glass transition temperatures between the copolymers (A) and (B) is 50° C. or more, and a ratio (A)/(B) (by weight) is in the range of 50/50 to 90/10.
摘要:
A pressure-sensitive adhesive optical film of the invention includes an optical film; and a pressure-sensitive adhesive layer placed on at least one side of the optical film, wherein the pressure-sensitive adhesive layer is a product formed by applying a pressure-sensitive adhesive coating liquid having a dissolved oxygen concentration of 0.02 to 3 mg/L and then drying the pressure-sensitive adhesive coating liquid. The pressure-sensitive adhesive optical film can satisfy heat durability, humidity durability, and high contrast.
摘要:
A pressure-sensitive adhesive layer for an optical film of the invention, which is formed by applying an aqueous dispersion pressure-sensitive adhesive including an aqueous dispersion containing at least a base polymer dispersed in water, and then drying the applied aqueous dispersion pressure-sensitive adhesive, has a content of residual monomer in the pressure-sensitive adhesive layer is 5 to 100 ppm per 1 g of the solid of the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer for an optical film has high durability so that foaming and peeling can be suppressed even under high temperature or high humidity environment.
摘要:
A pressure-sensitive adhesive layer is obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition. On a surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
摘要:
The aqueous dispersion adhesive composition contains an aqueous dispersion copolymer obtained by reacting of a reaction component containing alkyl (meth)acrylate whose linear or branched alkyl group has 4 to 18 carbon atoms, (meth)acrylic acid, a phosphoric acid group-containing vinyl monomer and an alkoxysilyl group-containing vinyl monomer to react; and a crosslinking agent having reactivity with a carboxyl group. In the aqueous dispersion adhesive composition, an amount of the crosslinking agent is from 0.07 to 4 parts by weight per 100 parts by weight of the aqueous dispersion copolymer, and in an adhesive layer made of the aqueous dispersion adhesive composition, an elongation at 90° C. is 200% or less.
摘要:
A pressure-sensitive adhesive layer is obtained by applying and drying an aqueous dispersion type pressure-sensitive adhesive composition. On a surface of the pressure-sensitive adhesive layer, the number of a concave portion having a depth in a thickness direction of 0.2 to 20 μm and a maximum length along the surface of 1 to 10 mm is 5 or less per 1 m2.
摘要:
A pressure-sensitive adhesive layer of the invention includes product formed by applying an aqueous dispersion type pressure-sensitive adhesive including a dispersion containing at least a base polymer dispersed in water and by drying the applied aqueous dispersion type pressure-sensitive adhesive, the pressure-sensitive adhesive layer dose not contain air bubbles with a maximum length of more than 350 μm and the number of air bubbles with a maximum length of 50 μm to 350 μm is 1/m2 or less in a surface of the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer is formed using an aqueous dispersion type pressure-sensitive adhesive with low environmental loading and has a high-quality coating appearance with no problem of fine air bubble defects.
摘要翻译:本发明的压敏粘合剂层包括通过涂布包含至少分散在水中的基础聚合物的分散体并通过干燥所施加的水性分散型压敏粘合剂的水分散型压敏粘合剂形成的产品, 粘合剂层不含有最大长度大于350μm的气泡,并且在粘合剂层的表面中最大长度为50μm至350μm的气泡数为1 / m 2以下。 使用环境负荷低的水性分散型压敏粘合剂形成压敏粘合剂层,并且具有高质量的涂布外观,没有气泡缺陷的问题。