Modified vinyl acetal resin for interlayer film of laminated glass

A laminated glass, comprising:

• two glass plates and
• an interlayer film arranged between the two glass plates wherein the sheet shaped article has
• wherein
• the interlayer film comprises a sheet shaped article containing a resin composition, which comprises 80% by mass or more of a modified vinyl acetal resin;
• the modified vinyl acetal resin contains 27 to 48 mol % of ethylene units, 36 to 57 mol % of vinyl alcohol units, and 16 to 28 mol % of acetalized vinyl alcohol units, based on all monomer units constituting the modified vinyl acetal resin;
• the modified vinyl acetal resin is produced through an acetalization reaction of an aldehyde with an ethylene vinyl alcohol copolymer;
• the aldehyde is only one or more aldehydes selected from the group consisting of formaldehyde, acetaldehyde, propionaldehyde, butylaldehyde, hexylaldehyde, benzaldehyde (C6H5CHO), isobutylaldehyde, 2-ethylhexylaldehyde, 2-methylbutylaldehyde, trimethylacetaldehyde, 2-methylpentylaldehyde, 2,2-dimethylbutylaldehyde, 2-ethylbutylaldehyde, and 3,5,5-trimethylhexylaldehyde;
• and the modified vinyl acetal resin has an acetalization degree of 5 mol % or more and less than 40 mol %, where the acetalization degree is defined as a ratio of the acetalized vinyl alcohol units out of all the monomer units other than the ethylene units.