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Minwax was founded in 1904 by Arthur B Harrison. Harrison persuaded his employer at Clifford I. Miller to manufacture a line of waterproofing materials, and later bought the line in 1910, [2] which he then named Minwax®. [3]
A still more popular use of polyurethane in textiles is in the form of spandex, also known as elastane or by DuPont's brand name Lycra. Polyurethane fibers in the form of spandex can stretch up to 600% and still return to their original shape. Spandex is spun with other fibers, such as cotton, nylon, or polyester, to create stretchable fibers ...
Models designed for severe use such as for descending waterfalls are heavily elasticated so they remain in place, but require significant arm strength to fit. Neoprene spray decks may be fitted with additional reinforcement of wear resistant fabric on the front part of the deck, to reduce damage during boat-to-boat rescue and emptying.
This is of particular interest in the area of polyurethane coatings, where light stability is a critical factor and is the main reason that aliphatic isocyanates are used in making polyurethane coatings. When PU foam, which is made using aromatic isocyanates, is exposed to visible light, it discolors, turning from off-white to yellow to reddish ...
Polyurethane dispersion, or PUD, is understood to be a polyurethane polymer resin dispersed in water, rather than a solvent, although some cosolvent may be used.Its manufacture involves the synthesis of polyurethanes having carboxylic acid functionality or nonionic hydrophiles like PEG (polyethylene glycol) incorporated into, or pendant from, the polymer backbone. [1]
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.
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Polyurea and polyurethane are copolymers used in the manufacture of spandex, which was invented in 1959. Polyurea was originally developed in automotive applications in the 1980s [ 2 ] [ 3 ] but other applications such as protecting tabletop edges followed. [ 4 ]
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