Title: Composite material for shielding against electromagnetic radiation

Abstract: A composite material comprising a polymer matrix containing metallized sheet-form textiles and/or metallized particles, and in addition additives for increasing the ohmic, electrical and/or magnetic losses which are uniformly present in the polymer and/or on the sheet-form textiles and/or particles, has a high shielding effect against electromagnetic radiation both in the short-range field and also in the long-range field over a wide frequency range.

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Inventors: Ebneth, Harold (Leverkusen, DE)
Fitzky, Hans G. (Odenthal, DE)
Oberkirch, Wolfgang (Cologne, DE)

Application Number: 06/272803
Filing Date: 1981-06-11
Publication_date: 1984-03-06
Assignee: BAYER AG (DE)

Primary Class(es): 428/195.100 428/407, 428/206, 442/133, 174/390, 428/403,
Other Classes: B29C70/88; D04H1/42; H01Q17/00; H05K9/00; B29C70/00; B32B3/00
US Patent Ref:

3347724	October, 1967	Schneble et al.	428/381	Metallizing flexible substrata
3440181	April, 1969	Olstowski et al.	428/403	METAL COATED VERMICULAR EXPANDED GRAPHITE AND POLYMER COMPOSITION CONTAINING SAME
3666550	May, 1972	Okuhashi et al.	428/263
3708335	January, 1973	Fujiwara et al.	428/381
4037009	July, 1977	Severinsen	428/283	Conductive elastomeric elements
4195114	March, 1980	Crosby et al.	428/403	Conductive plastic and method of preparation

Other Refs:
Primary Examiner: Bell, James J.
Assistant Examiner:
Attorney: Sprung, Horn, Kramer & Woods

Claims: