A soluble composite powder comprising homogenous composite particles, the homogenous composite particles comprising at least one soluble thermoplastic material and at least one submicron nanoparticle material. The at least one soluble thermoplastic material comprises from about 50 to 99 weight percent of the powder, and the at least one submicron nanoparticle material comprises from about 1 to 50 weight percent of the powder. The powder is soluble.

A protective window includes a flexible base film and a hard coating layer disposed on the flexible base film. The hard coating layer includes a silicone leveling agent and an inorganic antistatic agent. The coating layer includes an upper area and a lower area disposed between the upper area and the flexible base film, and a density of the inorganic antistatic agent in the lower area is greater than a density of the inorganic antistatic agent in the upper area.

An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

An optical laminate is provided, wherein stable durability is secured even at a high temperature, particularly an ultra-high temperature of about 100° C. or more, other physical properties required for the optical laminate are also excellent, and even in the case of being disposed adjacent to the electrode, corrosion of the relevant electrode or the like is not induced.

Provided is an antistatic agent (Z) containing: a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units; and a sulfonate (S), the sulfonate (S) being a salt of an alkylbenzenesulfonic acid anion which has a C6-C18 alkyl group, the sulfonate (S) including at least two alkylbenzenesulfonates different in the number of carbon atoms of the alkyl group in the anion, the sulfonate (S) satisfying the following formula:

0.40≤W(n)/[W(n−1)+W(n)+W(n+1)]≤0.90

wherein n is the number of carbon atoms of the alkyl group in the anion of an alkylbenzenesulfonate accounting for the highest proportion by weight in the sulfonate (S); W(n) is a weight of said alkylbenzenesulfonate; and W(n−1) and W(n+1) are respectively a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n−1) carbon atoms and a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n+1) carbon atoms.

An antistatic agent for thermoplastic resins (Z) containing a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units, and a C6-C18 branched alkylbenzenesulfonate (S); an antistatic resin composition (Y) containing the antistatic agent (Z) and a thermoplastic resin (E); and a molded article of the antistatic resin composition (Y).

Provided is an antistatic agent (Z) containing: a block polymer (A) having a block of a hydrophobic polymer (a) and a block of a hydrophilic polymer (b) as structure units; and a sulfonate (S), the sulfonate (S) being a salt of an alkylbenzenesulfonic acid anion which has a C6-C18 alkyl group, the sulfonate (S) including at least two alkylbenzenesulfonates different in the number of carbon atoms of the alkyl group in the anion, the sulfonate (S) satisfying the following formula:
0.40≤W(n)/[W(n−1)+W(n)+W(n+1)]≤0.90
wherein n is the number of carbon atoms of the alkyl group in the anion of an alkylbenzenesulfonate accounting for the highest proportion by weight in the sulfonate (S); W(n) is a weight of said alkylbenzenesulfonate; and W(n−1) and W(n+1) are respectively a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n−1) carbon atoms and a weight of an alkylbenzenesulfonate containing an anion having an alkyl group with (n+1) carbon atoms.

Expanded polyethylene resin particles include an antistatic agent and a base resin. The expanded polyethylene resin particles are obtained by expanding polyethylene resin particles including the antistatic agent and the base resin, the polyethylene resin particles having a storage modulus of elasticity of 900 to 5000 Pa at an angular frequency of 1 rad/sec in dynamic viscoelastic behavior measurement at 190° C. and a storage modulus of elasticity of 100000 Pa or less at an angular frequency of 100 rad/sec in dynamic viscoelastic behavior measurement at 190° C. The expanded polyethylene resin particles have a low temperature side melting peak and a high temperature side melting peak on a differential scanning calorimetry (DSC) curve obtained when a temperature of the expanded polyethylene resin particles is increased from 20° C. to 220° C. at a heating rate of 10° C./min.

Provided are a pressure-sensitive adhesive composition, a protection film, an optical laminate, a polarizing plate, and a display device. Provided is the pressure-sensitive adhesive composition which is excellent in various physical properties, such as endurance reliability, has excellent antistatic characteristics that change little over time. The pressure-sensitive adhesive composition can be used for a protection film, or can be used for an optical film, such as a polarizing plate, for example.

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A particulate material for powder bed fusion has specific particle size characteristics and includes a thermoplastic and a sulfonate salt having the structure (A), wherein Z is a phosphorus atom or a nitrogen atom; each occurrence of X is independently halogen or hydrogen provided that at least one X is halogen; b, d, and e are integers from zero to 12; c is 0 or 1 provided that when c is 1, d and e are not both zero; R.sup.11_13 are each independently C.sub.1-C.sub.12 hydrocarbyl; R.sup.14 is C.sub.1-C.sub.18 hydrocarbyl; and Y is selected from (B)—wherein R.sup.15 is hydrogen or C.sub.1-C.sub.12 hydrocarbyl. Also described is a method of powder bed fusion utilizing the particulate material.