He says synthetic rubber cannot be used, as there is a strong tradition of using natural rubber.

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These new compounds are mostly synthetic rubber, and compounds are evolving fast.

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The RSPB called for PIB, a colourless, synthetic rubber which can be released legally under certain conditions, to be reclassified and discharges outlawed.

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The hybrid design which Mr Jubb has come up with uses a solid fuel called hydroxyl-terminated polybutadiene, a form of synthetic rubber used to make things like aircraft tyres.

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Diehr, in which the Supreme Court upheld a patent for curing synthetic rubber that covered the process of checking temperatures and pressures and adjusting them according to a set of specified parameters.

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In addition, Sinopec's petrochemical business (resins, synthetic fibers, rubber) is also growing at a double-digit rate, with production continuing to expand to meet robust industrial demand for these essential manufacturing inputs.

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The plastination process involves replacing the natural body fluids with synthetic materials such as silicone rubber, epoxy resin or polyester.

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It is made from a blend of crushed rock, rubber and polyurethane, a synthetic plastic that replaces bitumen as the binding agent and allows even bigger pores in the road surface.

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Top Glove, which gets 80% of its sales from latex gloves, has been smart enough to diversify and, like its U.S. rivals, is making nitrile gloves, using a nonallergenic synthetic product, but in doing so it loses an edge: its proximity to its Malaysia's rubber plantations.

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