US864836A - Process of treating wurtzilite or elaterite and of producing fusible soluble products. - Google Patents

Description

UNITED sTA ss RATE n r onir oili WILLIAM F. DOERFLINGER AND LEON ll. lllltlh, ()l N [AGA RA FALLS, NEW YORK. AFSHENOlti-l, BY MESNE ASSIGNMENTS, TO MARCUS h'llNh), 01* NEW YORK, .r'., AND lilllllll Ill) 1 (1.

YOUNG, OF JERSEY CITY, NEW JERSEY.

SOLUBLE PRODUCTS.

Specification. of Letters Patent.

Patented Sept. 8, 1907.

Application filed January 26,1906. Serial No. 297,970.

To all whom it may concern:

'Be it known that we, WILLIAM F. Dormrnmonn and LEON H. BUCK, both citizens of the United States, residing at Niagara Falls, in the State of New York, have invented certain new. and useful Improvements in Processes of Treating Wurtzilite or Elaterite and of Producing Fusible Soluble Products Containing Wurtzilito or Elaterite, and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to make the same.

Wurtzilite, or elateritc, is the name given by mineralogists to a mineral asphaltic substance which varies in composition but which has certain well known physical characteristics. It is of conchoidal fracture, has a brown streak, is brownish black in color and in pieces thin enough to be translucent, has an orange red brown color by transmitted light. It is tough at ordinary temperatures and is not soluble in alkalics, acids. or the petroleum distillatcs, except in minute quantities. On account of these properties, it is an ideal substance for use as a coating material to protcct structures exposed to the weather, such as build ings, or to the water, such as vessels, but the ditliculty of treating it and mixing it with ordinary liquid vehicles, such as turpentine, whereby it may be applied to such purposes, has heretofore rendered its use unpractical;

When heated under ordinary conditions wurtzilito does not melt until a relatively high temperature is reached, but decomposes. We have discovered, however, that when it is mixed before, or at the time of, heating with certain resinous substances it does not decompose but becomes fusible when heated to a comparatively low temperature, say 350 C. and after cooling becomes completely soluble in turpentine and other liquid vehicles wher by may hi.- up plied to the purposes stated. lit is nec ssary that the resinous substance employed should he one which after treatment is itself soluble in the liquid W'llH'lu to be thereafter employed, for instance, it may be gilsonite which is soluble in turpentine without heating, or it may be amber gum, which is not soluble in.

turpentine until it has been heated.

As a concrete example of the application of our discovery, we may take a suitable quantity of wurtzilite and almost the same quantity of gilsonite and first grind them together to a finely divided state, {or iustance, so that the particles will pass through a 40 mesh sieve. Tho mixed powder is then placed in a suitable vessel to be heated.

It is best that the vessel should not be more than two-thirds full and the t it should be. sot away from the direct lire so that it cannot locally be overheated. "he vessel should then be liontcd to about 350 i and maintained at that temperature for about live hours. With any particular mixture or cmnbiualion of ingredients this time should be. determined by previous experiment. A suliiciout time has elapsed, it will. be 'l'ound, when a cooled sample completely dissol es in turpentine free, or nearly free, from. in soluble specks.

When the heat is first applied, there is given oil a little iricondensahlo gas and then possibly the per cent. of a volatile liquid. which should be caught in a condenser and receiver supplied for that purpose. After this has taken place, very little gas is given off and the upper part ol the vessel is always filled with organic vapor which excludes air from the materials "ed on. Jlll has an injurious influence and should as or as possible be excluded Alter the heating mjlt-rntiorl is completed the vessel will he found to contain a homogeneous liquid. This is then run. oft and allowed to cool and when it be,- comes solid it is broken up and is ready to be used in the preparation of the coating material,

instead of 1 st grinding the Wurtzilitc and gilsonite and then lieuting them together, the gilsonite may be first heated and liquefied and the solid mu'tzilitc then added. This is not dill'eront in technical el'l'ect from the step described and may under some conditions be preferred.

:lL'IU /VOVI'I the healing accomplished. the gilsonito seems to act a vehicle for carryim; the heat to all parts of the mass of wurtzilito whereby the heat uuil'oruily distributed and evenly tlpj llll'fii l to the'latter. This causes the u'urtnilile to melt at a temperature lower than that heretofore employed to fuse it and with a resulting economy in heat and time:

The product is less decomposed and more elastic than wurtzilitl. heated alone which, for many pupposts, is almost Worthless.

The pieces of the compound-alter cooling are mixed with the proper ingredients to use us a coating mu.- tcriul. A good mixture consists o say 100 parts ol' the. compound, 150 parts of lurpcntim: and 25 parts of linseed oil, .heuted together under conditions of agitation in a suitable vessel until'solution takes OF PEUDUUING FUSIBLE place; The liquid is then filtered or otherwise cleared of impurities and cooled. The coating material thus produced is readily applied with e brush, has a high luster, may be diluted as desired, is acid proof and has good wearing properties.

Having described our invention, what We claim as new is:-

1. The process of treating wurtzilite which consists in heating it in the presence oi. a suitable fusible resinous substance until homogeneous fusion takes place.

2. The process of treating wurtzilite which consists in heating it in the presence of :1 suitable fusible resinous substance whereby the resultant compound is soluble in turpentine.

3 The process of treatin;, wurtzilite which consists in heating it in the presence of a suitable fusible resinous substance, allowing the compound to cooiand dissolving the same in a suitable liquid vehicle, as turpentine, whereby it may be employed as a coating material.

4. The process of treating wurtzilite which consists in heating it in the presence of a suitable resinous substance to a temperature of about 350 1., mnintaining it at such temperature with the exclusion of air until a homogeneous liquidis formed and thereafter allowing the. same to cool.

5 The process of treating wurtlzilite which consists in 2 heating it in theprcsence of a fusible resinous substance which is soluble in turpentine. showing the mass to cool after heuting, and dissolving the same in turpentine to form a coating material.

6. The process of treating wurtzilite which consists in heating it in the presence of a fusible resinous substance which is soluble in turpentine, allowing the mass to cool after heating, and dissolving the same lnvturpentlne and linseed oil to forma coating material.

In witness whereof we have signed our names to this 35 specification in the presence of two subscribing witnesses.

' WM. n. nonruvnmenz LEON H. BUCK.

Witnesses;

J. H. SCHERMERHORN, 0. M. DAVIS.