US4743642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color balanced rubber-reinforced plastic
Assignee: Dow Chemical Co
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Filing: 1986-09-08
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Granted: 1988-05-10
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Expires: 2006-09-08
Abstract
Abstract A rubber-reinforced polymeric composition is disclosed having enhanced color stability upon exposure to ultraviolet (UV) light comprising a color balancer in an amount effective to reduce the overall color shift of the plastic due to exposure to UV light.
Inventors
- 👤 James A. Yanacek
- 👤 Robert J. Donald
- 👤 Christopher S. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/04; C08K5/07; C08K5/08; C08L; C08L101/00
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
83 words
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.
Claim 2
Dependent Claim
83 words
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.
Claim 3
Dependent Claim
39 words
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.
Claim 4
Dependent Claim
39 words
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.
Claim 5
Dependent Claim
37 words
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.
Claim 6
Dependent Claim
37 words
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.
Claim 7
Dependent Claim
25 words
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.
Claim 8
Dependent Claim
13 words
The composition of claim 1, wherein the organic dye is an anthraquinone dye.
Claim 9
Dependent Claim
11 words
The composition of claim 7, wherein the organic dye is 1,8-bis(phenylthio)anthraquinone.
Claim 10
Dependent Claim
25 words
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.
Claim 11
Dependent Claim
25 words
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.
Claim 12
Dependent Claim
22 words
The composition of claim 1, further comprising a pigment grade TiO 2 in an amount of up to about 10 weight percent.
Claim 13
Dependent Claim
14 words
The composition of claim 1, wherein the FR additive is 1,2-bis(pentabromophenoxy)ethane and antimony trioxide.
Claim 14
Independent Claim
87 words
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.
Claim 15
Independent Claim
87 words
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.
Claim 16
Dependent Claim
25 words
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.
Claim 17
Dependent Claim
13 words
The method of claim 13, wherein the organic dye is an anthraquinone dye.
Claim 18
Dependent Claim
11 words
The method of claim 15, wherein the anthraquinone dye is 1,8-bis(phenylthio)anthraquinone.
Claim 19
Dependent Claim
25 words
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.
Claim 20
Dependent Claim
24 words
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.
Claim 21
Dependent Claim
25 words
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.
Claim 22
Dependent Claim
14 words
The method of claim 13, wherein the FR additive is 1,2-bis(pentabromophenoxy)ethane and antimony trioxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-10 | 1991-11-09 | 1992-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-10 | 1995-11-09 | 1996-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-10 | 1999-11-09 | 2000-05-10 | $7700.00 | Window Closed / Lapsed |