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:
Nov. 08, 1977
Filed:
Aug. 18, 1975
Thaddeus Audykowski, Basel, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The invention relates to the production of chemically resistant epoxide resin layers on solid surfaces. The liquid component (A) which contains an epoxide compound is preferably mixed, and applied, together with the component (B) containing the curing agent, in a spraying apparatus. The coating is then cured. The curing agent contained in (B) consists essentially of Zn(BF.sub.4).sub.2, quite specific ethers or thioethers, an acid ester of the phosphoric or pyrophosphoric acids or a certain phosphonic acid ester and water. The system is characterized by a short is preferably mixed, and applied, together with the component (b) containing the curing agent, in a spraying apparatus. The coating is then cured. The curing agent contained in (B) consists essentially of ZN(BF.sub.4).sub.2, quite specific ethers or thioethers, an acid ester of th phosphoric or pyrophosphoric acids or a certain phosphonic acid ester and water. The system is characterized by a short curing time and produces coatings which adhere strongly and are resistant to chemicals. If the component (A) contains an epoxide compound which consists to the extent of 50 to 100% by weight of a cycloaliphatic epoxide compound, a coating is finally obtained which is resistant to weathering.