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US 12,545,815 B2Granted
Protective sheet
AssigneeNitto Denko Corporation
InventorsKosuke Yonezaki, Hakaru Horiguchi, Yuta Shimazaki
Life of this patent
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Abstract
Provided is a Low-E glass plate protective sheet having excellent long-term reliability. A Low-E glass plate protective sheet is provided. The protective sheet has a PSA layer. The PSA layer has a chloride ion amount of 105 μg or less per gram of PSA, determined by hot water extraction.
Claims13
A low-emissivity glass plate protective sheet having a pressure-sensitive adhesive layer, wherein
- the pressure-sensitive adhesive layer is formed from a water-dispersed pressure-sensitive adhesive composition,
- the water-dispersed the pressure-sensitive adhesive composition comprises an acrylic polymer, a chloride ion and an aqueous liquid,
- the acrylic polymer comprises, as a monomer unit, an alkyl (meth)acrylate in an amount of 75% by weight or more,
- the alkyl (meth)acrylate has an alkyl group having 1 to 20 carbon atoms, and
- the pressure-sensitive adhesive layer has a chloride ion amount of 1 μg or greater and 105 μg or less per gram of the pressure-sensitive adhesive layer.
2 more elements
Dependencies are inferred from the claim text.