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1. US4743642 - Color balanced rubber-reinforced plastic

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[ EN ]
What is claimed is:
1. A composition comprising a rubber-reinforced plastic composition containing an FR additive being capable of inhibiting ignition or burning characteristics of the plastic composition, and a fadeable, yellow color balancer, said color balancer being selected from the group consisting of an organic dye and an organic pigment, and being present in an effective amount within the range of 0.001 and 0.1 weight percent, whereby the overall color shift ΔE of the composition is reduced upon exposure to light having as a component, ultraviolet light.
2. A composition of claim 1, wherein the overall color shift of the rubber-reinforced plastic will be less than 2.0 ΔE after being subjected to accelerated weathering conditions for 100 hours at 55° C. in a Xenon Arc Ci65 Weatherometer.
3. A composition of claim 1, wherein the overall color shift of the rubber-reinforced plastic will be less than 1.0 ΔE after being subjected to accelerated weathering conditions for 300 hours at 55° C. in a Xenon Arc Ci65 Weatherometer.
4. A composition of claim 1, wherein the overall color shift of the rubber-reinforced plastic will be less than 2.0 ΔE after being subjected to accelerated weathering conditions for 100 hours in a HPUV Indoor Actinic Exposure System.
5. A composition of claim 1, wherein the overall color shift of the rubber-reinforced plastic will be less than 1.0 ΔE after being subjected to accelerated weathering conditions for 300 hours in a HPUV Indoor Actinic Exposure System.
6. The composition of claim 1, wherein the organic dye is present in an amount of from about 0.001 weight percent to about 0.02 weight percent.
7. The composition of claim 1, wherein the organic dye is an anthraquinone dye.
8. The composition of claim 7, wherein the organic dye is 1,8-bis(phenylthio)anthraquinone.
9. The composition of claim 1, wherein the organic pigment is present in an amount of from about 0.001 weight percent to about 0.05 weight percent.
10. The composition of claim 9, wherein the organic pigment is present in an amount of from about 0.03 weight percent to about 0.05 weight percent.
11. The composition of claim 1, further comprising a pigment grade TiO 2 in an amount of up to about 10 weight percent.
12. The composition of claim 1, wherein the FR additive is 1,2-bis(pentabromophenoxy)ethane and antimony trioxide.
13. A method of reducing the overall color shift, ΔE, of a rubber-reinforced plastic composition containing an FR additive to be exposed to light having as a component ultraviolet light, said FR additive being capable of inhibiting ignition or burning characteristics of the plastic composition, wherein the method comprises incorporating into the composition a fadeable, yellow color balancer being selected from the group consisting of an organic dye and an organic pigment, and being present in an effective amount within the range of 0.001 and 0.1 weight percent.
14. The method of claim 13, wherein the organic dye is present in an amount of from about 0.001 weight percent to about 0.02 weight percent.
15. The method of claim 13, wherein the organic dye is an anthraquinone dye.
16. The method of claim 15, wherein the anthraquinone dye is 1,8-bis(phenylthio)anthraquinone.
17. The method of claim 13, wherein the organic pigment is present in an amount of from about 0.001 weight percent to about 0.05 weight percent.
18. The method of claim 17, wherein the organic pigment is present in an amount from about 0.02 weight percent to about 0.05 weight percent.
19. The method of claim 13, wherein the composition further comprises a pigment grade TiO 2 in an amount of up to about 10 weight percent.
20. The method of claim 13, wherein the FR additive is 1,2-bis(pentabromophenoxy)ethane and antimony trioxide.