US1885388A - Transfer composition - Google Patents

Description

Ndv. l, 1932. B. s. TAYLOR ET AL 8 TRANSFER COMPOSITION Filed Dec. '23, 1925 JHL/E'TfiZJEE lea? E'TEH/CZZ? I M55721? [72/152755 ZWiA K paper and Patented Nov. 1, 19 32 BERT S. TAYLOB AND WEBSTER N. JONES, GOODRIGH COMPANY, OF NEW- YORK,

01? AKRON, OHIO, ASSIGNORS TO THE B. F. N. Y., A CORPORATION OF NEW YORK TRANSFER oomrosrrion Application filed December 23, 1925. Serial No. 77,889.

This invention relates to coatings for transfer papers of the type employed. with heated dies to aflix upon fabrics, leather, etc. thin-sheeted letters and other markings.

A primary object of the invention is to provide a superior transfer composition which may be spreadupon a paper back, dried, and subsequently loosened from the aflixed to fabric in desired designs by means of a heated die. Another object is to provide a composition of this character suitable for marking the fabric portions of rubber shoes and consequently one that can withstand the vulcanization temperatures to which the shoes are subjected. A further object is to provide a composition of the'type described which shall be suitable for use even upon standing for extended periods after spreading upon the paper backing.

Heretofore it has been proposed to make compositions for transfer papers by binding pigments with low melting compounds, such as gelatin, glue and nitrocellulose mixtures. lhese compositions are, however, not satisfactory for many purposes and particularly for transfers of trade marks, size marks, etc. to the fabric portions of rubber goods which must be vulcanized subsequent to the marking operatiornsince the binder in the affixed letters will not hold the pigment intact in shape and marginal contour upon the fabric under the temperatures of vulcanization.

For the afixing of markings on the fabric of rubber' shoes, which are subsequently to be vulcanized by subjection to high tempera tures, we have discovered that a transfer composition comprising a spar varnish, which is a well known commercial product composed in major part of gum-resin such as copal gum and a drying oil such as tung or china woo oil, an insoluble pigment, and an organic solvent admixed in suitable proportions gives most satisfactory results. This composltion may be spread in organicsolvent quickly evaporated, the pigment-varnish film readily transferred with a hot die to fabric in clean-cut designs, and the impression thus transferred will withstand the heat of vulcanization.

In practice, we find that the following a thin coat on paper, the

recipe has proven to be especially practical and commercially satisfactory and is herein given for urpose of illustration it being un derstood t at a wide variation from this example is within the scope of this invention:

Spar varnish 10 gallons Carbon tetrachloride 1.5 gallons Aluminum powder 48 pounds These ingredients are intimately admixed,"

spread on thin paper and the carbon tetrachloride removed by evaporation, after which the coated sheet may be rolled up ready for use. In the accompanying drawing, 1 represents the paper base and 2 represents ,the coating of the transfer composition applied thereto. I

It is tobe understood that any insoluble mineral pigment, such as bronze powder, vermillion, crimson antimony, etc. may be em-' ployed instead of the aluminum powder above specified, that high grade varnishes, composed in substantial part of drying oils, such as China wood oil, may replace the spar varnish and that other organic solvents, such as gasoline, benzol, etc. may be substituted for the carbon tetrachloride.

Where the pigmented coating is to be transferred by the hot-die process within a reasonably short time after the coated paper is prepared, satisfactory results can be secured with the composition hereinabove described.

However, when the transfer paper stands for two or three weeks before use, we find that the impressions cannot be as satisfactorily transferred therefrom. This appears to be due to the drying and hardening of the varnish Vehicle.

We have found that the addition of stearic (1 acid, or certain other organic compounds, to

compositions of the character above described has the remarkable effect of not only speeding up the preliminary drying or removing of the organic solvent, so that the coated surface loses its tackiness after a very short drying period, but also retards the hardening of the varnish vehicle so that the coating maybe transferred readily and satisfactorily even after standing for several weeks. This last property is particularly advantageous in large manufacturin operations where stocks of coated papers in arge quantities are purchased. Among the substances which exhibit these beneficial properties in the coating compositions-of the present applicationare'the igher fatty acids, of which stearic acid is an example, the mineral waxes, such as Montan wax, and petroleum products of high boiling point, such as paraffin and petrolatum.

As illustrative of a transfer paper coating composition containing a substance adapted to retard hardening of the pigment vehicle, the following recipe is given:

Aluminum powder 48 pounds Spar varnish 10 gallons Carbon tetrachloride 1.5 gallons Stearic acid 6.5 pounds This composition, after intimate mixing, may be spread in thin films on paper, and the organic solvent removed by evaporation. Upon standing for weeks, the coating does not become hard, and even after baking in an oven at 200 F. for two days, the coating is capable of being transferred from its paper backing to fabric to give a satisfactory impression.

It is obvious that wide variations in the proportion of the several ingredient-s may be employed without departing from the principles of this invention and we therefore do not wholly limit the claims herein to specific examples of the specification.

We claim:

1. A transfer comprising a thin paper base coated on one side with a composition consistinglargelyof an oleoresinous varnish containing substantial proportions of a drying oil, a iiiely divided pigment, and a higher fatty ac1 2. A transfer comprising a thin, flexible base coated on one side with a composition consisting largely of a spar varnish, a finely divided pigment, and a higher fatty acid.

3. A transfer comprising a paper base coated on one side with a composition consisting largely of a spar varnish, aluminum powder, and stearic acid.

In witness whereof we have hereunto set our hands this 19th day of December, 1925.

BERT S. TAYLOR. WEBSTER N. JONES.

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