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  2. List of polyurethane applications - Wikipedia

    en.wikipedia.org/wiki/List_of_polyurethane...

    Polyurethane is the basis for some construction adhesives in a caulking tube format. [16] On the way to a new and better glue for bookbinders, a new adhesive system was introduced for the first time in 1985. The base for this system is polyether or polyester, whereas polyurethane (PUR) is used as prepolymer.

  3. Polyurethane - Wikipedia

    en.wikipedia.org/wiki/Polyurethane

    Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.

  4. Moisture cure polyurethane - Wikipedia

    en.wikipedia.org/wiki/Moisture_cure_polyurethane

    Moisture cured polyurethane–urea coatings have been made by reacting 1,2,3-triazole rich polyether polyols with HMDI at NCO/OH eq. ratio of 1.2 to obtain isocyanate-terminated polyurethane prepolymers. The prepolymers were cured under atmospheric moisture to make polyurethane–urea free films.

  5. Caulk - Wikipedia

    en.wikipedia.org/wiki/Caulk

    Caulk (also known as caulking and calking) [1] is a material used to seal joints or seams against leakage in various structures and piping. The oldest form of caulk consisted of fibrous materials driven into the wedge-shaped seams between boards on wooden boats or ships. Cast iron sewerage pipes were formerly caulked in a similar way.

  6. Silyl modified polymers - Wikipedia

    en.wikipedia.org/wiki/Silyl_modified_polymers

    Typically the sealant products manufactured with silyl-modified polymers have good adhesion on a wide range of substrate materials, and have good temperature and UV resistance. MS polymers consist of a polyether backbone with dimethoxy-silyl or trimethoxy-silyl ends, with trimethoxy-silyl groups being more reactive.

  7. Polyol - Wikipedia

    en.wikipedia.org/wiki/Polyol

    Polyether polyols have numerous uses. [16] [17] As an example, polyurethane foam is a big user of polyether polyols.[18]Polyester polyols can be used to produce rigid foam. [19] [20] They are available in both aromatic and aliphatic versions.

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