Special effects with mixtures of interference pigments

Abstract

A method of producing mixtures of interference pigments having special effects comprises mixing at least one large particle size interference pigment with at least one normal size interference pigment of predetermined colors and in proportions desired to obtain a unique effect.

Claims

1. A method of producing mixtures of interference pigments having special effects comprising mixing at least one glitter interference pigment having a particle size range of 10-150 m and a particle size distribution D.sub.50 of more than 40 m with at least one interference pigment of predetermined colors having a particle size range of 10-60 m and a particle size distribution D.sub.50 of less than 40 m wherein at least one glitter pigment has a complementary color to at least one interference pigment.

2. A mixture of pigments as obtained by claim 1.

3. In a formulation that is cosmetics, personal care products, paints, coatings or printing inks containing a special effect pigment, the improvement wherein the special effect pigment is a mixture of pigments according to claim 2.

4. The formulation according to claim 3 containing absorbents, astringents, antimicrobial substances, antioxidants, antiperspirants, antifoaming agents, antidandruff active ingredients, antistatics, binders, biological additives, bleaching agents, chelating agents, deodorants, emollients, emulsifiers, emulsion stabilizers, dyes, fillers, humectants, film formers, odor substances, flavor substances, insect repellents, preservatives, anticorrosion agents, cosmetic oils, solvents, oxidants, vegetable constituents, buffer substances, reducing agents, surfactants, propellent gases, opacifiers, UV filters and UV absorbers, denaturing agents, viscosity regulators, perfume or vitamins.

5. The cosmetic and personal care products according to claim 3 which are lipophilic, hydrophilic or hydrophobic.

6. The method according to claim 1, wherein the D.sub.50 value of the glitter interference pigment and the D.sub.50 value of the interference pigment differ by 40-80 m.

7. The pigment according to claim 2, wherein the D.sub.50 value of the glitter interference pigment and the D.sub.50 value of the interference pigment differ by 40-80 m.

Description

EXAMPLE 1

(1) Mixing two interference pigments of complementary colors (with the same particle size range) in 1 to 1 ratio by weight.

(2) When Timiron Super Blue is blended with Timiron Super Gold, the interference colors of the blue and gold pigments are no longer visible due to color cancellation (according to the color mixing rule). On the other hand, when experimental glitter interference blue and gold pigments (both D50 about 74 m) are mixed together, the blue and gold luster colors of pigment particles are discernable macroscopically. This mixture renders the so called multi-color effect.

(3) Similar results are obtained for the mixtures of green and red interference pigments in normal or large particle size. Therefore, a multi-color effect can be created by mixing large particle size interference pigments.

EXAMPLE 2

(4) Mixing two interference pigments of complementary colors (one with large particle size and the other with normal particle size) in 1 to 1 ratio by weight.

(5) The luster color of the mixture depends on the color choice of large particle size pigments and is shown below.

(6) A first mixture consists of experimental glitter interference gold (D5074 m) and Timiron Splendid Blue. Since the intensity of interference gold color is normally higher than that of blue, the sparkling gold pigment particles can be seen clearly in the environment of smooth blue luster pigment. This mixture has a very attractive color and no significant color cancellation is observed. In the second case, when experimental glitter interference blue (D5074 m) is blended with Timiron Splendid Gold, we are able to see blue luster from some of the pigment particles, but the color is quite dull when compared to the intense interference gold color. This mixture gives a less impressive color.

(7) The same is true again for blending red and green interference pigments of normal and large particle sizes. The luster color of the mixture of experimental glitter interference red (D5074 m) and Timiron Splendid Green (D5022 m) is rather different from that of the mixture of experimental glitter interference green (D5074 m) and Timiron Splendid Red (D5022 m).

(8) The examples show that it is possible to create a product consisting of complementary interference colors by mixing a large particle size pigment with a normal size pigment of complementary color to minimize the color cancellation. However, this cannot be accomplished by mixing different D50 fractions of normal particle size pigments. Additionally, the choice of color for the large particle size pigment is important.

EXAMPLE 3

(9) Mixing two interference pigments of non-complementary colors (one with large particle size and the other with normal particle size) in 1 to 1 ratio by weight.

(10) Some unexpected highly attractive color effects are generated by this type of mixing. When experimental glitter interference red (D5074 m) and Timiron Splendid Blue (D5022 m) are mixed together, the luster color of the mixture becomes bluish magenta and is surprisingly striking. In addition, the sparkling luster of the experimental glitter red interference pigment can be seen clearly as well. Whereas, when experimental glitter interference blue (D5074 m) is mixed with Timiron Splendid Red, the color effect of the mixture is still red, but less vivid and no magenta luster color is developed.

(11) This example demonstrates the importance of choosing the color of the large particle size pigment in order to achieve a specific color effect.

(12) The compositions of the various pigments referred to in the above examples are tabulated as follows:

(13) TABLE-US-00001 Particle Size Range Description INCI name D50 (m) (m) Timiron Splendid Blue titanium dioxide, mica, silica 18~25 10~60 Timiron Splendid Gold titanium dioxide, mica, silica 18~25 10~60 Timiron Splendid Green titanium dioxide, mica, silica 18~25 10~60 Timiron Splendid Red titanium dioxide, mica, silica 18~25 10~60 Experimental Glitter Interference Blue mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Gold mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Green mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Red mica, titanium dioxide 60~100 10~150

(14) In substantially the same manner, other mixtures are producible, as below, the percentage being in percent by weight of each pigment of a mixture in a nitrocellulose lacquer.

(15) 1. 2% Colorona Glitter Copper/2% Timiron Splendid Green: glitter copper particle is clearly visible over a green background 2. 2% Large particle size color travel (Green blue/Lilac)/2% Xirona Magic Mauve: the color travel effect of Xiron Magic Mauve is dominating.

(16) 3. 2% Large particle size color travel (Green blue/Lilac)/2% Xirona Nordic Sunset: the color travel effect of Xirona Nordic Sunset is dominating.

(17) 4. 2% Large particle size color travel (Red/Gold)/2% Experimental Glitter Interference Blue: the color travel effect is unchanged and the blue background is clearly visible, very interesting color effect.

(18) 5. 2% Large particle size color travel (Red/Gold)/1% Experimental Glitter Interference Blue: similar effect as 4.

(19) 6. 2% Xirona Volcanic Fire/2% Experimental Glitter Interference Blue: color travel effect from Xirona Volcanic Fire is modified.

(20) 7. 2% Xirona Volcanic Fire/1% Experimental Glitter Interference Blue: similar as 6, except the color travel effect was changed less dramatically.

(21) 8. 2% Large particle size color travel (Red/Gold)/2% Experimental Glitter Interference Green: color travel effect remains, multi-color effect is created, very interesting color effect.

(22) 9. 2% Large particle size color travel (Red/Gold)/1% Experimental Glitter Interference Green: similar as 8

(23) 10. 2% Xirona Volcanic Fire/2% Experimental Glitter Interference Green: color travel effect from Xirona Volcanic Fire is greatly diminished.

(24) 11. 2% Xirona Volcanic Fire/1% Experimental Glitter Interference Green: similar as 10.

(25) 12. 2% Experimental Glitter Interference Red/2% Timiron Splendid Gold: The gold color overwhelms the red.

(26) 13. 2% Experimental Glitter Interference Red/0.5% Timiron Splendid Gold: interesting color effect.

(27) 14. 2% Reflecks Beams of Blue/2% Reflecks Gleams of Gold: similar effect as shown in example 1.

(28) 15. 2% Reflecks Beams of Blue/2% Experimental Glitter Interference Gold: similar effect as shown in example 1 except that the blue color from experimental glitter interference blue is more apparent.

(29) 16. 2% Reflecks Gleams of Gold/2% Experimental Glitter Interference Blue: the gold color dominates.

(30) 17. 2% Experimental Glitter interference Green/2% Reflecks Dimensions Sparkling Red: similar effect as described in example 1.

(31) With respect to the preceding tables, the compositions of the various pigments are listed as follows:

(32) TABLE-US-00002 Particle Size Range Description INCI name D50 (m) (m) Colorona Glitter Copper mica, iron oxides 65~82 10~150 Timiron Splendid Gold titanium dioxide, mica, silica 18~25 10~60 Timiron Splendid Green titanium dioxide, mica, silica 18~25 10~60 Xirona Magic Mauve silica, titanium dioxide, tin oxide 16~22 5~50 Xirona Nordic Sunset silica, titanium dioxide, tin oxide 16~23 5~50 Xirona Volcanic Fire titanium dixodixe, silica, mica 19~25 10~60 Experimental Glitter Interference Blue mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Gold mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Green mica, titanium dioxide 60~100 10~150 Experimental Glitter Interference Red mica, titanium dioxide 60~100 10~150 Large particle size color travel mica, titanium dioxide, ~85 10~150 (Green blue/Lilac) silica, tin oxide Large particle size color travel mica, titanium dioxide, ~85 10~150 (Red/Gold) silica, tin oxide Reflecks Beams of Blue borosilicate, titanium dioxide ~94 4~190 Reflecks Gleams of Gold borosilicate, titanium dioxide ~94 4~190 Reflecks Dimensions Sparkling Red borosilicate, titanium dioxide 75~100

(33) The entire disclosures of all applications, patents and publications, cited herein and of corresponding U.S. Provisional Application Ser. No. 60/606,503, filed Sep. 2, 2004 are incorporated by reference herein.

(34) The preceding examples can be repeated with similar success by substituting the generically or specifically described reactants and/or operating conditions of this invention for those used in the preceding examples.

(35) From the foregoing description, one skilled in the art can easily ascertain the essential characteristics of this invention and, without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions.