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:
Feb. 24, 1981
Filed:
Aug. 10, 1979
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
Steel, wood and other structural elements and substrates are flameproofed by being coated with a composition comprising at least one metal salt of a phosphonocarboxylic or phosphonophosphonic acid of the formula ##STR1## in which R.sub.1 =a carboxy group, a phosphono group, an alkyl, alkoxy or alkylamino radical optionally substituted one or more times by oxygen and/or nitrogen and containing at least one substituent from the group comprising the substitutents --COOH and --PO.sub.3 H.sub.2, the alkyl group containing from 1 to 12 carbon atoms, preferably from 1 to 4 carbon atoms, and the sum of the number of carboxyl and phosphono groups being from 1 to 8, preferably from 1 to 4; or a hydroxyalkyl or aminoalkyl radical containing from 1 to 12 and preferably from 1 to 4 carbon atoms,