Composition, coating, film, and base material

A composition, comprising:

• an ethylene-vinyl alcohol copolymer (A) comprising, in polymerized form, ethylene in a range of from 0.5 to 19 mol. %, relative to all polymerized monomer units;
• and
• a particle (B) comprising a polymer particle (BX), the polymer particle (BX) being a single-layer polymer particle, and
• wherein the particle (B) is present in the composition in a range of from 1 to less than 100 parts by mass, based on 100 parts by mass of the ethylene-vinyl alcohol copolymer (A),
• wherein the particle (B) has an average particle diameter in a range of from 10 to 500 nm,
• wherein the particle (B) does not include a polyvinyl alcohol-based polymer,
• wherein the composition is an aqueous emulsion, and
• wherein the composition comprises solid components in a range of from 1 to 30% by mass.

A composition, comprising:

• water;
• an ethylene-vinyl alcohol copolymer (A) having a content of an ethylene unit of 0.5 to 19 mol. % relative to all structural units;
• and
• a particle (B) comprising a polymer particle (BX),
• wherein the particle (B) is present in the composition in a range of from 1 to less than 100 parts by mass, based on 100 parts by mass of the ethylene-vinyl alcohol copolymer (A),
• wherein the particle (B) has an average particle diameter in a range of from 10 to 500 nm,
• wherein the particle (B) does not include a polyvinyl alcohol-based polymer,
• wherein the composition is an aqueous dispersion, and
• wherein the composition comprises solid components in a range of from 1 to 30% by mass.