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:
May. 03, 1988
Filed:
Nov. 06, 1986
Cressie E Holcombe, Jr, Knox County, TN (US);
Lloyd R Chapman, Anderson County, TN (US);
ZYP Coatings, Inc., Oak Ridge, TN (US);
Abstract
A composition to produce an adherent and water insoluble deposit on substrate surfaces. An ink or other coating material for these surfaces is described which can be applied at any temperature up to at least 2,000 degrees Fahrenheit, with the resultant deposit (after drying) being highly adherent and water insoluble. As an ink, this composition is useful to produce bar codes on metals to identify the composition, heat treatment, customer, sections for other processing, etc. This ink (coating) has a liquid phase formed from at least water, a pre-reacted lithium silicate, and unreacted lithium hydroxide monohydrate. Preferably, the liquid phase contains a dispersent in the form of a clay, for example. Typically the pre-reacted Li.sub.2 O-SiO.sub.2 has a SiO.sub.2 :Li.sub.2 O molar ratio of about 4.6:1, and the unreacted LiOH.multidot.H.sub.2 O provides from 1/3 to 2/3 the total lithium oxide content, giving a final SiO:Li.sub.2 O molar ratio of the composition of from about 1.71:1 to about 2.97:1. To this liquid phase is added a pigment, typically TiO.sub.2 or MnO-Fe.sub.2 O.sub.3 at about 12-60 wt % based upon the liquid phase. A range of compositions is discussed as well as typical results.