The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Apr. 08, 2010
Stephen Clifford, Bremgarten, CH;
Faustine Soyeux, Luneville, FR;
Andrej Krivda, Wettingen, CH;
Vincent Tilliette, Zurich, CH;
Nikolaus Zant, Zurich, CH;
Bandeep Singh, Wytheville, VA (US);
Felix Greuter, Baden-Ruetihof, CH;
Leopold Ritzer, Untersiggenthal, CH;
Stephen Clifford, Bremgarten, CH;
Faustine Soyeux, Luneville, FR;
Andrej Krivda, Wettingen, CH;
Vincent Tilliette, Zurich, CH;
Nikolaus Zant, Zurich, CH;
Bandeep Singh, Wytheville, VA (US);
Felix Greuter, Baden-Ruetihof, CH;
Leopold Ritzer, Untersiggenthal, CH;
ABB Research Ltd., Zurich, CH;
Abstract
Polymer concrete electrical insulation including a hardened epoxy resin composition filled with an electrically non-conductive inorganic filler compositions. The polymer concrete electrical insulation system optionally may contain additives. The epoxy resin composition is based on a cycloaliphatic epoxy resin. The inorganic filler composition can be present within the range of about 76% by weight to about 86% by weight, calculated to the total weight of the polymer concrete electrical insulation system. The inorganic filler composition includes a uniform mixture of (i) an inorganic filler with an average grain size within the range of 1 micron (μm) to 100 micron (μm) [component c(i)], and (ii) an inorganic filler with an average grain size within the range of 0.1 mm (100 micron) to 2 mm [component c(ii)]. The inorganic filler with an average grain size within the range of 1 micron (μm) to 100 micron (μm) [component c(i)] can be present in an amount within the range of 22% to 42%, calculated to the total weight of the polymer concrete electrical insulation system; and (e) the inorganic filler with an average grain size within the range of 0.1 mm to 2 mm [component c(ii)] is present within the range of 41% to 61% by weight, calculated to the total weight of the polymer concrete electrical insulation; and method of producing said electrical insulation.