Abstract: A tire includes four zigzag circumferential grooves and hexagonal blocks divided by the lateral grooves each extending so as to connect between adjacent ones of the zigzag circumferential grooves. The zigzag circumferential grooves include a pair of center circumferential grooves each having a groove width not more than 4.0 mm and a pair of shoulder circumferential grooves each having a groove width larger than that of each of the center circumferential grooves. A depth of each of the lateral grooves is smaller than a depth of each of the zigzag circumferential grooves, and a groove bottom of each of the lateral grooves is provided with a first sipe.

Abstract: A pneumatic tire comprises a tread portion provided with crown main grooves, center axial grooves and center blocks including a siped center block with a first sipe. The siped center block has a pair of substantially v-shaped opposite first and second block side walls each having an outwardly protruding vertex. The first sipe has a wavy configuration at least partially. One end of the first sipe is positioned on one side in the tire circumferential direction of the vertex of the first block side wall, whereas the other end of the first sipe is positioned on other side in the tire circumferential direction of the vertex of the second block side wall.

Abstract: A tire includes four zigzag circumferential grooves and hexagonal blocks divided by the lateral grooves each extending so as to connect between adjacent ones of the zigzag circumferential grooves. The zigzag circumferential grooves include a pair of center circumferential grooves each having a groove width not more than 4.0 mm and a pair of shoulder circumferential grooves each having a groove width larger than that of each of the center circumferential grooves. A depth of each of the lateral grooves is smaller than a depth of each of the zigzag circumferential grooves, and a groove bottom of each of the lateral grooves is provided with a first sipe.

Abstract: A tire comprises a tread portion 2 comprising blocks 20. At least one of the blocks has a first block wall (25a), a second block wall (25b), and a first region (26a) and a second region (26b) divided by a crossing sipe 30. In a plan view, the first and second block walls (25a) and (25b) are each formed in a convex V-shape so as to have an apex portion 27 protruding toward the outside of the block. The crossing sipe 30 has a first end (28a) positioned on a first side of the apex portion 27 of the first block wall (25a) and a second end (28b) positioned on a second side of the apex portion 27 of the second block wall (25b) in the tire circumferential direction. The first and second regions (26a) and (26b) each have a closed sipe 38 having both ends terminating within the region.

Abstract: A pneumatic tire comprises a tread portion provided with blocks divided by main grooves extending continuously in the tire circumferential direction, and axial grooves connecting between the main grooves. The blocks include a siped block. The siped block is provided with a first sipe extending in the tire axial direction across the block, and second sipes respectively disposed in regions subdivided by the first sipe. Each of the second sipes is a closed sipe whose both ends are closed, and the maximum depth of the second sipe is less than the maximum depth of the first sipe.

Abstract: A coating composition capable of forming an acrylic hard coat film contains (A) an acrylate component and (B) a metal oxide, wherein a mass ratio (B)/(A) of (B) the metal oxide to (A) the acrylate component is from 0.1 to 1.5, (A) the acrylate component comprises components (a-1), (a-2) and (a-3), and a content ratio X of the component (a-1), a content ratio Y of the component (a-2) and a content ratio Z of the component (a-3) satisfies the following conditions (1) and (2). Condition (1): in (A) the acrylate component, X is from 40 to 60% by mass, and a total of Y and Z is from 60 to 40% by mass, and condition (2): in the total of Y and Z, Z is 0% by mass or more and less than 100% by mass.

Abstract: A tire comprises a tread portion 2 comprising blocks 20. At least one of the blocks has a first block wall (25a), a second block wall (25b), and a first region (26a) and a second region (26b) divided by a crossing sipe 30. In a plan view, the first and second block walls (25a) and (25b) are each formed in a convex V-shape so as to have an apex portion 27 protruding toward the outside of the block. The crossing sipe 30 has a first end (28a) positioned on a first side of the apex portion 27 of the first block wall (25a) and a second end (28b) positioned on a second side of the apex portion 27 of the second block wall (25b) in the tire circumferential direction. The first and second regions (26a) and (26b) each have a closed sipe 38 having both ends terminating within the region.

Abstract: Coating composition containing (A) an acrylate component and (B) zirconia, wherein a mass ratio (B)/(A) of (B) to (A) is from 0.1 to 2.0, (A) contains components (a-1), (a-2) and (a-3), and a content ratio X of component (a-1), a content ratio Y of component (a-2) and content ratio Z of component (a-3) satisfies conditions (1) and (2), and optical member having hard coat film obtained by using coating composition.

Abstract: A coating composition contains (A) an acrylate component and (B) a metal oxide. A mass ratio (B)/(A) is from 0.6 to 1.3, (A) contains the components (a-1), (a-2) and (a-3), and a content ratio X of (a-1), a content ratio Y of (a-2) and a content ratio Z of (a-3) satisfies the conditions (1) and (2): (a-1): a polyfunctional acrylate compound having 3 or more acrylate groups in one molecule; (a-2): a dendritic aliphatic compound having an acrylate group at an end thereof; and (a-3): a modified acrylate compound having been modified with an alkylene oxide or ?-caprolactone. The condition (1): in (A), X is from 40 to 60% by mass, and a total of Y and Z is from 60 to 40% by mass, and the condition (2): in the total of Y and Z, Z is 30% by mass or more and less than 100% by mass.

Abstract: A pneumatic tire comprises a tread portion provided with crown main grooves, center axial grooves and center blocks including a siped center block with a first sipe. The siped center block has a pair of substantially v-shaped opposite first and second block side walls each having an outwardly protruding vertex. The first sipe has a wavy configuration at least partially. One end of the first sipe is positioned on one side in the tire circumferential direction of the vertex of the first block side wall, whereas the other end of the first sipe is positioned on other side in the tire circumferential direction of the vertex of the second block side wall.

Abstract: A pneumatic tire comprises a tread portion provided with blocks divided by main grooves extending continuously in the tire circumferential direction, and axial grooves connecting between the main grooves. The blocks include a siped block. The siped block has a first block side wall and a second block side wall respectively extending along the main grooves on both sides thereof. The siped block is provided with a first sipe extending from the first block side wall to the second block side wall. In the top view of the siped block, the first block side wall and the second block side wall are substantially V-shaped to have a vertex protruding outwardly of the block. One end of the first sipe is positioned on one side in the tire circumferential direction of the vertex of the first block side wall, whereas the other end of the first sipe is positioned on the other side in the tire circumferential direction of the vertex of the second block side wall.

Abstract: A pneumatic tire comprises a tread portion provided with blocks divided by main grooves extending continuously in the tire circumferential direction, and axial grooves connecting between the main grooves. The blocks include a siped block. The siped block is provided with a first sipe extending in the tire axial direction across the block, and second sipes respectively disposed in regions subdivided by the first sipe. Each of the second sipes is a closed sipe whose both ends are closed, and the maximum depth of the second sipe is less than the maximum depth of the first sipe.

Abstract: To provide a plastic lens having a ?/4 layer exhibiting excellent adhesion between a plastic substrate and a hard coat layer, and a method for producing thereof. A plastic lens containing: a plastic substrate (A); a ?/4 layer (B) that is formed on the plastic substrate, is formed by curing a composition comprising a bifunctional or higher functional acrylate compound, a dendritic aliphatic compound having an acrylate group at an end thereof, and metal oxide particles, and has a thickness of from 50 to 100 nm; and a hard coat layer (C) that is formed on the ?/4 layer directly or through another layer.

Abstract: An aspect of the present invention relates to a polarizing lens, which comprises a polarizing layer comprising a dichroic dye and a functional film in this order on a lens substrate, and further comprises a waterborne resin layer between the polarizing layer and the functional film as a layer adjacent to both the polarizing layer and functional film, wherein the waterborne resin layer is greater than 0.50 ?m in thickness and has been formed by coating and drying a waterborne resin composition comprising a polyether polyurethane resin and a water-based solvent.

Abstract: A coating composition contains (A) an acrylate component and (B) a metal oxide. A mass ratio (B)/(A) is from 0.6 to 1.3, (A) contains the components (a-1), (a-2) and (a-3), and a content ratio X of (a-1), a content ratio Y of (a-2) and a content ratio Z of (a-3) satisfies the conditions (1) and (2): (a-1): a polyfunctional acrylate compound having 3 or more acrylate groups in one molecule; (a-2): a dendritic aliphatic compound having an acrylate group at an end thereof; and (a-3): a modified acrylate compound having been modified with an alkylene oxide or ?-caprolactone. The condition (1): in (A), X is from 40 to 60% by mass, and a total of Y and Z is from 60 to 40% by mass, and the condition (2): in the total of Y and Z, Z is 30% by mass or more and less than 100% by mass.

Abstract: A coating composition capable of forming an acrylic hard coat film contains (A) an acrylate component and (B) a metal oxide, wherein a mass ratio (B)/(A) of (B) the metal oxide to (A) the acrylate component is from 0.1 to 1.5, (A) the acrylate component comprises components (a-1), (a-2) and (a-3), and a content ratio X of the component (a-1), a content ratio Y of the component (a-2) and a content ratio Z of the component (a-3) satisfies the following conditions (1) and (2). Condition (1): in (A) the acrylate component, X is from 40 to 60% by mass, and a total of Y and Z is from 60 to 40% by mass, and condition (2): in the total of Y and Z, Z is 0% by mass or more and less than 100% by mass.

Abstract: Coating composition containing (A) an acrylate component and (B) zirconia, wherein a mass ratio (B)/(A) of (B) to (A) is from 0.1 to 2.0, (A) contains components (a-1), (a-2) and (a-3), and a content ratio X of component (a-1), a content ratio Y of component (a-2) and content ratio Z of component (a-3) satisfies conditions (1) and (2), and optical member having hard coat film obtained by using coating composition.

Abstract: To provide a plastic lens having a ?/4 layer exhibiting excellent adhesion between a plastic substrate and a hard coat layer, and a method for producing thereof. A plastic lens containing: a plastic substrate (A); a ?/4 layer (B) that is formed on the plastic substrate, is formed by curing a composition comprising a bifunctional or higher functional acrylate compound, a dendritic aliphatic compound having an acrylate group at an end thereof, and metal oxide particles, and has a thickness of from 50 to 100 nm; and a hard coat layer (C) that is formed on the ?/4 layer directly or through another layer.