US2576290A - Method of applying a modified wrinkle finish coating to a base - Google Patents

Description

Nov. 27, 195] Fl$HER,'JR 2,576,290

. METHOD OF APPLYING A MODIFIED WRINKLE' FINISH COATING To A BASE Filed D90 29, 1949 FIG.4

INVENTOR JOHN R. FISHER an ATTORNEYS Patented Nov. 27, 1951 UNITED STATES li/I'ETHOD F APPLYING A MODIFIED WRIN- KLE FINISH-COATING TO' A BASE John R. Fisher, Jr, Dayton, Ohio, assignor to New Wrinkle; Incl, Dayton, Ohio, a corpora- 't'i'on" of Delaware TNT OFFICE Application December 29, 194:9, Serial No, 135,7790

1 Claim.

kles in wrinkle coating compositions have been suggested in earlier patents. One such method is to position the coated base at an angle to the horizontal while wet so that flow will cause increased depth of coating at various points, which upon drying give rise to the so oalled pine tree effect.

In another patent it is suggested that wrinkle inhibitors, such as rosin be applied to limited areas of the surface on which the wrinkle finishes are to be developed. The effect of this material is to dissolve in the wrinkle composition, thus reducing the rugosity of" the wrinkle in the over laying wrinkle composition, all wrinkles in the area being of relatively the same'rugosity.

It is an object of this invention -toprovide a 2 ning is caused by a capillary flow along the top of the wrinkle ridges.

When any runningdces' occur it enhances the decorative effect where there are two different colors, because the running tends to be along-the line" of accentuated rugosity, thus giving the optical illusion that numerous color lines'inter- -lconnect the nuclei, althoughclose examination will show that a continueusline between nuclei occurs .invery rare ns anc I?he droplets maybe, scattered as smalldiscreet se r ted uni s. by pas i h high Vi os y 'lvarnish or enamel in a short blast through the wrinkle coating having an accentuated wrinkle v to be decorated. This base coat is allowed todry' until a skin is formed but not until wrinkling has been initiated.

Onto this skinned-over surface is deposited a multiplicity ofsmall droplets of a high viscosity composition, such as a'wrinklingvarnish, a nonwrinkling varnish, an enamel, and like coating materials.

The small droplets should be ofsuch highvis-V cosity material that the small segregatedsliots are relatively non-flowing in character; any running of the droplets takes place, the run When number of droplets per square inch will neces-- sarily depend upon the proximity of the gun to the surface being sprayed and the length of time of the blast.

For this purpose a varnish having a viscosity in the range of approximately 2.5 poises to 5 .5 poises is generally utilized, although under carefully controlled conditions viscosities outside this rangemaybe used.

Particle size of the spatter coat depends upon individual choice. The smaller the particlesand thefgreater number of individual particles, however, the greater number of lines of accentuated rugosity.

A typical spatter coat will deposit 15 to segregated droplets ranging inparticle' size from onethousandths of an inch to three-thirty seconds of'an-i nch.

The scattered droplets may be of a wrinkling or non-wrinkling composition. A two tone distinctive decorative eiiect may, for example, be obtained by spattering a brilliant color, such as red, on a background such as green or gray.

These scattered particles of the spatter coat act as nuclei; Accentuated wrinkles radiate from these nuclei and run from one nucleus to the next. These accentuated wrinkles are distinct from the regular wrinkles of lesser rugosity which appear on the surface of the area encircled by the accentuated wrinkles.

While materials of any color different from thato-f the wrinkle coating bring about the two tone. result desired, an especially beautiful efiect is obtained if said spatter coat is of comple- I mentary-color with regard to said base coat.

' articleissubiected tov force dry n at t peraa: tures in the range of 150 to 250 degrees F. This drying may be carried out in the customary baking oven or in any equivalent devices known in the art.

In the following, several examples are given which are for the purposes of illustration, but not by way of limitation:

, Example I Base wrinkle coating composition:

Base varnish:

the product was almost gelled. Thereafter the drier, the linseed oil and the other 50 lbs. of the resin were immediately admixed and the product cooled to 350 F., whereafter the naphtha was added.

Pigment base:

In a separate batch a pigment base was prepared by mixing:

15 parts by weight base varnish 8 parts by weight naphtha 10 parts by weight rutile titanium oxide 9.8 parts by weight rutile titanium-calcium 3 parts by weight yellow iron oxide 0.2 parts by weight lamp black The final base wrinkle coating composition was then obtained by mixing:

46% by weight pigment base 39% by weight base varnish 5% by weight lead naphthenate 10% by weight naphtha solvent The composition thus prepared yielded a coating of a light silver-gray color. Spatter composition:

The spatter coating was obtained by mixing:

% by weight pigmented varnish base 60% by weight phenol-formaldehyde resin 5 by weight lead linoleate and cobalt linoleate 5 by weight VM and P naphtha The pigmented varnish base used in the above formula was obtained by heat bodying 2.5 gals. of oiticica oil and 2.5 gals. of dehydrated castor oil until a viscosity of about Z-6 was obtained and by then adding 100 lbs. of phenol formaldehyde resin. The mixture was heated to approximately 560 F. until the mass was homogeneous. Thereafter 20 more gallons of a bodied mixture of oiticica and dehydrated castor oil were slowly added to the product and the mass heated to a temperature of from 560 to 575 degrees F. until homogeneous. The mixture was then cooled and thinned with so much VM and P naphtha as to obtain a viscosity of approximately 3 poises. To 63% of this varnish base, a mixture of 2% toluidine and of asbestine were added and this mixture then ground.

The composition obtained had a deep red color.-

When spattered on the article provided with the first base wrinkle coat, it formed red nuclei from 4 Example II Clear wrinkle varnish base: 7

100 lbs. phenol formaldehyde resin 7 lbs. lead acetate 18 gals. China wood oil 2 gals. heavy bodied linseed oil 10 gals. xylol 24 gals. toluol This varnish was prepared by first heating the wood oil and 50 lbs. of phenol formaldehyde resin to a top heat of 560 F. Thereafter the kettle is pulled and the fluid allowed to cool to approximately 540 F. and held at this temperature until there is a slight string off a test rod.

There is then added to the mixture lead acetate in a careful manner to avoid foaming. When all of the lead has been added the linseed oil and the remaining 50 lbs. of phenol formaldehyde resin are added. The mixture is then stirred until the phenol formaldehyde resin is dissolved. The mixture is then cooled to 350 and thinned with solvent to a viscosity C (G-H scale).

Pigment base may be prepared by mixing:

lbs. Lithopone /2 lb. Lampblack 4% lbs. Magnesium silicate 70 gals. Clear wrinkle varnish base 1 gal. Cobalt naphthenate This composition yields a gray wrinkle composition.

A maroon spatter wrinkling overspray was obtained by mixing:

78 lbs. Red iron oxide 29 lbs. Magnesium silicate 3 lbs. Lampblack '74 gals. Phthalic acid-glycerol resin (alkyd) 1 gal. Cobalt naphthenate 16 gals. Toluol This mixture thinned with toluol has a viscosity of approximately 3.6 poises.

The composition has a maroon color.

It wrinkles in the spatter with a wrinkle characteristic of this type of wrinkle composition.

Ezrample III Spatter composition A non-wrinkling spatter coating was obtained by mixing:

2% lbs. Toluidine toner 2 lbs. Magnesium silicate 1 gals. Clear wrinkle varnish base 8 gals. Short oil varnish The short oil varnish used in the above formula was obtained by heating tung oil and phenol formaldehyde resin, and thinning the cooked mixture until a viscosity of approximately 4 poises was obtained.

This composition has a bright red color when spattered on the article; provided with a first base wrinkle coating of the nature of Example II, it forms smooth red nuclei upon a background of wrinkled gray base coat.

In the accompanying drawings an embodiment of my process is illustrated. There:

Figure 1 is a perspective view of a panel while being coated by means of a spray gun;

Figure 2 shows the same panel after the coating has been applied;

Figure 3 shows the panel while the second enamel coating is being spattered thereon by means of another spray gun;

Figure 4 is a section through a drying furnace in which the coated panel is being baked; and

Figure 5 is a enlarged view (four magnification) of a piece of the finished panel showing the red nuclei from which the wrinkles radiate.

Referring to Figure 1 in particular, I9 is a panel to be coated and l l a spray gun from which a wrinkle coating composition [2 is being sprayed onto the panel I0. After the coating has been applied, the panel I with the coating of wrinkle composition I2 is allowed to air-dry, as shown in Figure 2.

The application of the second layer, namely, the enamel layer, is shown in Figure 3. There, the panel It), provided with the coat l2, obtains scattered spots I5 of an enamel. This enamel, which is of different color than the composition of the first coat, is applied with a spray gun H3.

The panel, which is still free from wrinkles, is then subjected to a forced drying or baking process. For this purpose it is introduced into a drying furnace I6 (Figure 4). There, the panel I!) having the wrinkling coating composition 12 and the nuclei l5 thereon is suspended from a support l1. A heating device l8 provides for the necessary temperature. v

The result of the process of my invention is shown in Figure 5 where the finished panel is shown on an enlarged scale. It is obvious from this drawing that the wrinkles l9 start out and radiate from the nuclei Hi. In the area circumscribed by the wrinkles l9, are the natural base coat wrinkles 20.

It will be understood that the process and the article of my invention are not dependent upon any specific coating composition. A succession of any wrinkle coating composition with any enamel coating composition may beused satisfactorily. While the efiect of my invention may be obtained with any such two types of compositions, one being a wrinkle composition and the other one an enamel, if of difierent colors, the best and most striking results, however, are

obtained if the colors of the two compositions are of complementary colors.

It will also be understood that while there have been described herein certain specific embodiments of my invention, it is not intended thereby to have it limited to or circumscribed by the specific details given, since my invention is susceptible to various modifications and changes that come within the spirit of the specification and the scope of the appended claims.

I claim:

A method of providing articles with a wrinkle finish decorative coating wherein the wrinkle finish comprises two appreciable different wrinkle rugosities which comprises the steps of (a) applying to the surface of the article to be finished a wrinkle-drying coating composition comprising phenol formaldehyde resin, wrinkle-drying oil, a solvent, and drier, b) drying said coating for approximately 15 minutes to form a skin over the surface thereof 'then before wrinkling has been initiated, (c) applying a spattering coat consisting of a plurality of segregated droplets of a pigmented resinous oil liquid coating composition having a viscosity of approximately 2.5 to 5.5 poises and is of a different color from the wrinkle coating composition, and (d) drying said coating at a temperature between about and 250 F., to produce a wrinkle-finish on said article having accentuated wrinkles formed between said segregated droplets as nuclei and fine wrinkles in the area encircled by The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,831,323 Root Nov. 10, 1931 1,896,594 Root Feb. 7, 1933

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