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  2. Polystyrene - Wikipedia

    en.wikipedia.org/wiki/Polystyrene

    Polystyrene (PS) / ˌ p ɒ l i ˈ s t aɪ r iː n / is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. [5] Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to air and water vapor and has a relatively low ...

  3. Phase-out of polystyrene foam - Wikipedia

    en.wikipedia.org/wiki/Phase-out_of_polystyrene_foam

    Washington, D.C. banned polystyrene foam takeout containers on January 1, 2016. The ban was expanded on January 1, 2021, to include the retail sale of polystyrene foam. [89] American Samoa banned the import, sale, and distribution of polystyrene foam containers on February 6, 2024, taking effect 60 days later. [90]

  4. Polymeric foam - Wikipedia

    en.wikipedia.org/wiki/Polymeric_foam

    Polystyrene#Foams (PS) foam Expanded polystyrene (EPS) Extruded polystyrene foam (XPS), sometimes sold under brand name Styrofoam; sometimes polystyrene paper (PSP) Polyurethane (PU) foam. LRPu low-resilience polyurethane; Memory foam; Sorbothane; Polyurea foam; Polyethylene foam, as used in PEF rod; Polyvinyl chloride (PVC) foam Closed-cell ...

  5. Styrofoam - Wikipedia

    en.wikipedia.org/wiki/Styrofoam

    Styrofoam insulation extruded polystyrene foam (XPS), owned and manufactured by DuPont. Styrofoam is a genericized trademarked brand of closed-cell extruded polystyrene foam (XPS), manufactured to provide continuous building insulation board used in walls, roofs, and foundations as thermal insulation and as a water barrier.

  6. 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.

  7. Vitamin D not recommended for preventing fractures in older ...

    www.aol.com/vitamin-d-not-recommended-preventing...

    The U.S. Preventive Services Task Force released a draft recommendation advising against using vitamin D to prevent falls and fractures in people over 60. Pharmacist Katy Dubinsky weighs in.

  8. Gary D. Cohn - Pay Pals - The Huffington Post

    data.huffingtonpost.com/paypals/gary-d-cohn

    The Gary D. Cohn Stock Index From January 2008 to December 2012, if you bought shares in companies when Gary D. Cohn joined the board, and sold them when he left, you would have a -40.6 percent return on your investment, compared to a -2.8 percent return from the S&P 500.

  9. Tacticity - Wikipedia

    en.wikipedia.org/wiki/Tacticity

    Atactic polymers such as polystyrene (PS) are technologically very important. [citation needed] If a special catalyst [clarification needed] is used in its synthesis, it is possible to obtain the syndiotactic version of this polymer, but most industrial polystyrene produced is atactic.

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