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New cast elastomer offered

By David Reed, UT EditorLong Beach, California-Cal Polymers, Inc., which has been offering polyurethane-based materials since 1954, has added a cast elastomer to its Calthane ND range of polymers first introduced in 1975.Typical systems can either cure fast enough to be used in spray systems or overnight at ambient temperature, the firm indicates, adding that the systems are free of mercury, TDI (toluene diisocyanate) and MOCA (methylene ortho-bis(chloroaniline)). One two-part system allows users to make polymers with a hardness in the range 0-50 Shore D, Cal Polymers indicated in a 16 Oct. statement.The new material can yield elastomers with hardness in the range 0 Shore A to 80 Shore D, the firm says, adding that it can be optically clear or coloured and either shatter-proof or fragile. It also offers outstanding cryogenic properties, down to -300°F (-150°C), and is resistant to boiling water, according to Cal Polymers.Finally, the firm says the new material can be used to make shape-memory products which are tough and stiff at room temperature but instantly become soft and rubbery in hot water.”

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