| 摘要 |
PCT No. PCT/GB92/00520 Sec. 371 Date May 24, 1994 Sec. 102(e) Date May 24, 1994 PCT Filed Mar. 23, 1992 PCT Pub. No. WO92/17418 PCT Pub. Date Oct. 15, 1992.Non-asbestos flexible sheet material suitable for use in gaskets (e.g., automobile exhaust manifold gaskets) operating at high temperature (e.g., 500 DEG -700 DEG C.) is made by impregnating a non-woven tissue of glass or like fiber stable at 700 DEG C. with an aqueous slurry of inorganic filler, particularly a clay, said aqueous slurry including a dispersed elastomeric binder (e.g., an acrylic) and a dispersed or dissolved binder (e.g., colloidal silica) which is essentially inorganic and is effective above 300 DEG C. The impregnated tissue is then dried.
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