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:
Sep. 29, 1987
Filed:
Jul. 09, 1985
Hilary E Adeney, Surrey Hills, AU;
Derrard M Hall, Glen Waverley, AU;
Dulux Australia Ltd., Victoria, AU;
Abstract
This invention relates to aqueous 'multi-pack' coating compositions, that is, those which comprise at least two discrete components (or 'packs') which are mixed prior to application. Prior attempts to provide an aqueous multi-pack composition have failed to provide a suitable combination of the desirable characteristics of adequate 'pot-life' (the time for which the mixed components remain workable) and early development of adequate mechanical properties. The compositions of the present invention which provide such a combination consist of a number of components which together comprise a constituent having epoxide groups, a constituent comprising addition polymer in the form of an aqueous dispersion and a constituent capable of reacting with epoxide groups. In an especially preferred embodiment, the aqueous addition polymer dispersion is combined with at least one of the other constituents in the form of a multi-polymer particle dispersion. The composition are useful in the automotive refinish and heavy duty coatings areas.