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  2. Polycarbonate - Wikipedia

    en.wikipedia.org/wiki/Polycarbonate

    A study showed that the products were about 4050 wt.% liquid, 14–16 wt.% gases, while 34–43 wt.% remained as solid residue. Liquid products contained mainly phenol derivatives (~75 wt.%) and bisphenol (~10 wt.%) also present. [39] Polycarbonate, however, can be safely used as a carbon source in the steel-making industry. [41]

  3. Window film - Wikipedia

    en.wikipedia.org/wiki/Window_film

    Then the law was changed and 30 per cent was allowed. In 2017, the Federal Traffic Law was revised again. Now, people can tint their windows to 50 per cent. However, taxis and trucks are not allowed to tint their windows to 50 per cent. [26]

  4. Poly(4-vinylphenol) - Wikipedia

    en.wikipedia.org/wiki/Poly(4-vinylphenol)

    Poly(4-vinylphenol), also called polyvinylphenol or PVP, is a plastic structurally similar to polystyrene.It is produced from the monomer 4-vinylphenol, which is also referred to as 4-hydroxystyrene.

  5. Recycling codes - Wikipedia

    en.wikipedia.org/wiki/Recycling_codes

    Recycling codes on products. Recycling codes are used to identify the materials out of which the item is made, to facilitate easier recycling process.The presence on an item of a recycling code, a chasing arrows logo, or a resin code, is not an automatic indicator that a material is recyclable; it is an explanation of what the item is made of.

  6. Poly(methyl methacrylate) - Wikipedia

    en.wikipedia.org/wiki/Poly(methyl_methacrylate)

    The first acrylic acid was created in 1843. Methacrylic acid, derived from acrylic acid, was formulated in 1865.The reaction between methacrylic acid and methanol results in the ester methyl methacrylate.

  7. Smart glass - Wikipedia

    en.wikipedia.org/wiki/Smart_glass

    Darkening occurs from the edges, moving inward, and is a slow process, ranging from many seconds to 20–30 minutes depending on window size. Newer electrochromic technologies eliminate the yellow cast in the clear state and tinting to more neutral shades of gray, tinting evenly rather than from the outside in, and accelerate the tinting speeds ...

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