Crossword clues for polyurethane
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Polyurethane \Pol"y*ur`eth*ane\, n. (Chem.) any polymer containing [-NH.CO.O-] linkages; such polymers are much used as the basis of light but rigid foams for packaging (
polyurethane foam) and for hard coatings, as on floors.
Douglas Harper's Etymology Dictionary
Wiktionary
n. (context organic chemistry English) Any of various polymeric resins containing urethane links; used in very many industrial and domestic applications.
WordNet
n. any of various polymers containing the urethane radical; a wide variety of synthetic forms are made and used as adhesives or plastics or paints or rubber [syn: ployurethan]
Wikipedia
Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. While most polyurethanes are thermosetting polymers that do not melt when heated, thermoplastic polyurethanes are also available.
Polyurethane polymers are traditionally and most commonly formed by reacting a di- or poly isocyanate with a polyol. Both the isocyanates and polyols used to make polyurethanes contain, on average, two or more functional groups per molecule.
Some noteworthy recent efforts have been dedicated to minimizing the use of isocyanates to synthesize polyurethanes, because the isocyanates raise severe toxicity issues. Non-isocyanate based polyurethanes (NIPUs) have recently been developed as a new class of polyurethane polymers to mitigate health and environmental concerns.
Polyurethane products often are simply called “urethanes”, but should not be confused with ethyl carbamate, which is also called urethane. Polyurethanes neither contain nor are produced from ethyl carbamate.
Polyurethanes are used in the manufacture of high-resilience foam seating, rigid foam insulation panels, microcellular foam seals and gaskets, durable elastomeric wheels and tires (such as roller coaster, escalator, shopping cart, elevator, and skateboard wheels), automotive suspension bushings, electrical potting compounds, high performance adhesives, surface coatings and surface sealants, synthetic fibers (e.g., Spandex), carpet underlay, hard-plastic parts (e.g., for electronic instruments), condoms, and hoses.
Usage examples of "polyurethane".
Briggs sloshed on the polyurethane with all the delicacy of a toddler, and I followed along behind her, trying to smooth out the drips before they hardened.
New sounds, a different flight path, a sense of being encased in solid tubing and not some polyurethane wrap.
It had coated the travertine flowstone like poured polyurethane, sharpening the delicate oranges, greens and reds of the original mineral salts into a crystalline riot of color.
He pulled the fitted sheet back and saw that the mattress had been covered with a soft polyurethane topper.
It contained a double bed without a headboard, polyurethane curtains of white and silver thread, and a long dresser of fake oak veneer under a mirror stuck to the wall with clear plastic fasteners.
Inside the boxes were the remains of young Americans in black polyurethane body bags.
Although eight was not a particularly overwhelming number, all eight openings were covered with huge sheets of clear polyurethane due to the construction, the translucent curtains apparently intended to keep dust off the tombs inside the alcoves.
Portaree Inn shiny with coats of polyurethane, the light from brass lamps, their lustre factory-aged, glistening on the stone.
I probably ought not to have seen: a plastic female body almost identical to Karenbony, taut, skeletal, and yellowed, made of polyurethane foam, with long straight brown Orion hair parted in the middle.
Germyn was too busy to grieve, so he lived on, no theorist, not very cerebral, but glorying in a full gut, in taking a strong woman, in waking and lying extra minutes idly on a bed of polyurethane foam raped from its cushioning job in a stamping mill.
Reproduction antique navigational charts were embedded in polyurethane on every tabletop, and the world they portrayed was one of vast unpopulated oceans with treacherous creatures lurking at the outer edges.
Pons and abducent to hook up with the polyurethane basilar-stem artery and allow a safe shimmy down to the good old oblongata just outside the rubberized meatus at ground zero.
The polyurethane bulged and settled in the North Shore wind and seemed like some monstrous vacuole inhaling and exhaling directly over little Gately, lying there, wide-eyed.
Most car manufacturers have gone to a clear base coat, which is a polyurethane enamel.
Ayeeyah, the Pacific Rim will gorge on all the polyurethane foam products we can make for packaging, building, bedding and insulating.