A special color masterbatch for ABS and its application
By using compound dispersants and dispersing aids, the problem of poor dispersion of ABS masterbatch in ABS resin was solved, resulting in reduced color difference between multiple batches of products and simplified production process, thus achieving higher economic value.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU WUXING PLASTIC PROD CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-31
AI Technical Summary
Existing ABS color masterbatches generally have poor dispersion effects in ABS resin, which can easily lead to significant color differences between multiple batches of products, increasing the difficulty and cost of the production process.
A dispersant composed of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax is used, along with a dispersant compounded with sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326, to improve the dispersion effect of colorants in ABS resin.
It significantly improves the dispersion uniformity of colorants, reduces color difference between multiple batches of products, simplifies the production process, and reduces costs.
Smart Images
Figure SMS_1
Abstract
Description
Technical Field
[0001] This invention relates to the field of plastic additives, and in particular to a color masterbatch for ABS and its application. Background Technology
[0002] In the production of ABS plastic products, in order to give the plastic products a beautiful appearance, it is necessary to color the plastic products. Coloring includes surface coloring and overall coloring. Surface coloring mainly involves applying liquid pigments to the surface of the molded plastic products. After drying, a product with a specific color on the surface is obtained. Because liquid pigments have uniform color and are easy to mix, the surface color of multiple batches of products produced by the surface coloring process has low color difference and the product appearance quality is relatively stable.
[0003] However, surface coloring only colors the surface of the product. Once the surface pigment layer is damaged, the base color of the product will be revealed, which will seriously affect the appearance. Therefore, high-end products usually adopt an overall coloring process, which mixes the pigment into the ABS resin so that the plastic product is colored from the inside out. Such products will still show the same color after the surface is worn, and will not easily affect the appearance.
[0004] Pigments mixed into ABS resin are usually in powder form. Powder is difficult to disperse in ABS resin. Therefore, they are usually made into color masterbatch to improve the dispersion of pigments. However, although existing ABS color masterbatches can improve the dispersion effect of pigments to a certain extent, their dispersion effect is relatively average. Although the color difference is not easily noticeable on the same product, there is still a relatively obvious color difference between multiple batches of products. This requires constant adjustment of the amount of color masterbatch to control the color difference between different batches of products, which significantly increases the difficulty of the production process. Therefore, there is still room for improvement. Summary of the Invention
[0005] To further reduce color difference between multiple batches of products, this application provides a special color masterbatch for ABS and its application.
[0006] Firstly, this application provides a color masterbatch specifically for ABS, employing the following technical solution: An ABS-specific color masterbatch, characterized in that it comprises the following components in parts by weight: 49-52 parts of ABS resin; 24-26 parts of colorant; Stabilizer 14-16 parts; Dispersant 7.6-8.8 parts; Dispersing agent 1.5-2 parts; The dispersant is a compound of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax; The dispersing agent is a compound of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326.
[0007] By adopting the above technical solution, and using a dispersant composed of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax, combined with a dispersing aid composed of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326, the dispersion effect of the colorant is significantly improved. This allows the colorant to be better and more uniformly dispersed in the ABS resin after the color masterbatch is added, resulting in more stable color quality of the plastic products, less color difference between multiple batches of products, significantly improved product quality, greatly reduced process difficulty, and higher economic value.
[0008] Preferably, the mass ratio of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 in the dispersing agent is 0.8-1:0.6-0.8:0.1-0.2.
[0009] By adopting the above technical solution and specifically selecting the mass ratio of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326, the synergistic effect of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 is better, which can better improve the efficacy of the dispersant, make the colorant dispersion effect better, and make the coloring effect of plastic products better and more uniform.
[0010] Preferably, the mass ratio of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax in the dispersant is 2.3-2.7:1-1.2:1.8-2.1:2.5-2.8.
[0011] By adopting the above technical solution and by specifically selecting the mass ratio of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax, the dispersion effect can be further improved, and the addition of color masterbatch to plastic products can better improve the coloring quality of plastic products.
[0012] Preferably, the stabilizer is barium sulfate.
[0013] By adopting the above technical solution and specifically selecting barium sulfate, the product stability can be improved and it is less prone to yellowing.
[0014] Preferably, the barium sulfate has a particle size ≤1μm.
[0015] By adopting the above technical solution and specifically selecting the particle size of barium sulfate, the anti-yellowing effect is better.
[0016] Preferably, the preparation method of the ABS-specific color masterbatch is as follows: Step 1), mix ABS resin, colorant, stabilizer, dispersant and dispersing aid to obtain a premix; Step 2), the premix is extruded and granulated to obtain ABS-specific color masterbatch.
[0017] By adopting the above technical solution, the ABS-specific masterbatch can significantly improve the coloring quality of ABS plastic products, with low color difference between multiple batches of products, stable quality, no need for frequent adjustment of masterbatch dosage, and significantly reduced process difficulty.
[0018] Preferably, in step 2), the extrusion temperature is 165-175℃.
[0019] By adopting the above technical solution and specifically selecting an extrusion temperature of 165-175℃, the components in the ABS-specific color masterbatch are better and more fully mixed, which allows the addition of the ABS-specific color masterbatch to the ABS resin to better improve the dispersion uniformity of the colorant, thus improving the quality of plastic products.
[0020] Secondly, this application provides an application of ABS-specific color masterbatch, employing the following technical solution: An application of the above-mentioned ABS-specific color masterbatch, wherein the ABS-specific color masterbatch is added to ABS resin to prepare colored ABS plastic products.
[0021] By adopting the above technical solution, the resulting colored ABS plastic products have uniform coloring, minimal color difference between batches, and low processing difficulty, thus possessing high economic value.
[0022] Preferably, the method for preparing the colored ABS plastic product is as follows: Step 01): Weigh ABS-specific color masterbatch and ABS raw material in a mass ratio of 0.99-1.01:24.97-25.03, mix them evenly, and obtain the mixed raw material. Step 02) The mixed raw materials are extruded or injection molded to obtain colored ABS plastic products.
[0023] By adopting the above technical solution, the amount of ABS-specific color masterbatch added in colored ABS plastic products is low, and the coloring effect is good. It effectively controls costs and has high economic value.
[0024] In summary, this application has the following beneficial effects: 1. Because this application uses a dispersant composed of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax, and a dispersing aid composed of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326, the dispersion effect of the colorant is significantly improved. This allows the colorant to be better and more uniformly dispersed in the ABS resin after the color masterbatch is added, resulting in more stable color quality of the plastic products, less color difference between multiple batches of products, significantly improved product quality, greatly reduced process difficulty, and higher economic value.
[0025] 2. In this application, the preferred method is to select the specific mass ratio of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 to achieve a better synergistic effect, thereby improving the dispersant's effectiveness, resulting in better colorant dispersion and a more uniform and better coloring effect on the plastic product.
[0026] 3. In this application, the preferred method is to select the specific mass ratio of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax to further improve the dispersion effect. Adding color masterbatch to plastic products can better improve the coloring quality of plastic products. Detailed Implementation
[0027] The present application will be further described in detail below with reference to the embodiments.
[0028] Example 1
[0029] A special color masterbatch for ABS is prepared as follows: Step 1): Add 52kg ABS resin, 24kg colorant, 14kg barium sulfate, 2.3kg calcium stearate, 1kg zinc stearate, 1.8kg PP wax, 2.5kg Fischer-Tropsch wax, 0.8kg sodium dodecyl sulfonate, 0.6kg C12-18 alcohol polyoxyethylene ether-9, and 0.1kg Tinuvin 326 into a mixer, and stir for 10 minutes at a speed of 500r / min to obtain a premix.
[0030] Step 2) The premix is fed into a twin-screw extruder for extrusion and granulation to obtain ABS-specific color masterbatch. The processing temperatures of the twin-screw extruder zones I-XI are set sequentially as follows: 130℃, 135℃, 140℃, 145℃, 145℃, 155℃, 155℃, 160℃, 160℃, 165℃, 165℃, and the main screw speed is 400 rpm.
[0031] The ABS resin was purchased from Dongguan Yucheng Plastics Co., Ltd., PA-747SA01.
[0032] The colorant is a compound of rutile titanium dioxide and blue tinting powder in a mass ratio of 23.92:0.08.
[0033] Rutile titanium dioxide was purchased from Langfang Lanke Chemical Group Co., Ltd.
[0034] The blue tinting powder was purchased from the Lingshou County Shanchuan Mineral Products Processing Plant.
[0035] Barium sulfate was purchased from Langfang Lanke Chemical Group Co., Ltd., with a particle size ≤1μm.
[0036] Calcium stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0037] Zinc stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0038] The PP wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., XH1240FH1L1Q.
[0039] Fischer-Tropsch wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., model number XH0240GGU2GR.
[0040] Sodium dodecyl sulfonate was purchased from Jinan Xinquan Chemical Technology Co., Ltd.
[0041] C12-18 alcohol polyoxyethylene ether-9 was purchased from Jinan Haowen Chemical Co., Ltd.
[0042] Tinuvin326 was purchased from Shanghai Zhupin Chemical Co., Ltd.
[0043] Example 2
[0044] A special color masterbatch for ABS is prepared as follows: Step 1): Add 50.5 kg ABS resin, 25 kg colorant, 15 kg barium sulfate, 2.5 kg calcium stearate, 1.1 kg zinc stearate, 1.95 kg PP wax, 2.65 kg Fischer-Tropsch wax, 0.9 kg sodium dodecyl sulfonate, 0.7 kg C12-18 alcohol polyoxyethylene ether-9, and 0.15 kg Tinuvin 326 into a mixer, and stir for 12 minutes at a speed of 500 r / min to obtain a premix.
[0045] Step 2) The premix is fed into a twin-screw extruder for extrusion and granulation to obtain ABS-specific color masterbatch. The processing temperatures of the twin-screw extruder zones I-XI are set sequentially as follows: 135℃, 140℃, 145℃, 150℃, 150℃, 160℃, 160℃, 165℃, 165℃, 170℃, 170℃, and the main screw speed is 400 rpm.
[0046] The ABS resin was purchased from Dongguan Yucheng Plastics Co., Ltd., PA-747SA01.
[0047] The colorant is a compound of rutile titanium dioxide and blue tinting powder in a mass ratio of 24.9:0.1.
[0048] Rutile titanium dioxide was purchased from Langfang Lanke Chemical Group Co., Ltd.
[0049] The blue tinting powder was purchased from the Lingshou County Shanchuan Mineral Products Processing Plant.
[0050] Barium sulfate was purchased from Langfang Lanke Chemical Group Co., Ltd., with a particle size ≤1μm.
[0051] Calcium stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0052] Zinc stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0053] The PP wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., XH1240FH1L1Q.
[0054] Fischer-Tropsch wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., model number XH0240GGU2GR.
[0055] Sodium dodecyl sulfonate was purchased from Jinan Xinquan Chemical Technology Co., Ltd.
[0056] C12-18 alcohol polyoxyethylene ether-9 was purchased from Jinan Haowen Chemical Co., Ltd.
[0057] Tinuvin326 was purchased from Shanghai Zhupin Chemical Co., Ltd.
[0058] Example 3
[0059] A special color masterbatch for ABS is prepared as follows: Step 1): Add 49kg ABS resin, 26kg colorant, 16kg barium sulfate, 2.7kg calcium stearate, 1.2kg zinc stearate, 2.1kg PP wax, 2.8kg Fischer-Tropsch wax, 1kg sodium dodecyl sulfonate, 0.8kg C12-18 alcohol polyoxyethylene ether-9, and 0.2kg Tinuvin 326 into a mixer, and stir for 15 minutes at a speed of 500r / min to obtain a premix.
[0060] Step 2) The premix is fed into a twin-screw extruder for extrusion and granulation to obtain ABS-specific color masterbatch. The processing temperatures of the twin-screw extruder zones I-XI are set sequentially as follows: 140℃, 145℃, 150℃, 155℃, 155℃, 165℃, 165℃, 170℃, 170℃, 175℃, 175℃, and the main screw speed is 400 rpm.
[0061] The ABS resin was purchased from Dongguan Yucheng Plastics Co., Ltd., PA-747SA01.
[0062] The colorant is a compound of rutile titanium dioxide and blue tinting powder in a mass ratio of 25.88:0.12.
[0063] Rutile titanium dioxide was purchased from Langfang Lanke Chemical Group Co., Ltd.
[0064] The blue tinting powder was purchased from the Lingshou County Shanchuan Mineral Products Processing Plant.
[0065] Barium sulfate was purchased from Langfang Lanke Chemical Group Co., Ltd., with a particle size ≤1μm.
[0066] Calcium stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0067] Zinc stearate was purchased from Langfang Qianyao Technology Co., Ltd.
[0068] The PP wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., XH1240FH1L1Q.
[0069] Fischer-Tropsch wax was purchased from Guangzhou Jingyi New Materials Co., Ltd., model number XH0240GGU2GR.
[0070] Sodium dodecyl sulfonate was purchased from Jinan Xinquan Chemical Technology Co., Ltd.
[0071] C12-18 alcohol polyoxyethylene ether-9 was purchased from Jinan Haowen Chemical Co., Ltd.
[0072] Tinuvin326 was purchased from Shanghai Zhupin Chemical Co., Ltd.
[0073] Comparative Example 1 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was replaced with an equal amount of ABS resin, C12-18 alcohol polyoxyethylene ether-9 was replaced with an equal amount of ABS resin, and Tinuvin 326 was replaced with an equal amount of ABS resin.
[0074] Comparative Example 2 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Ethylene bis-stearamide was used to replace sodium dodecyl sulfonate in equal amounts, PE wax was used to replace C12-18 alcohol polyoxyethylene ether-9 in equal amounts, and OPE wax was used to replace Tinuvin 326 in equal amounts.
[0075] Ethylene bis-stearamide was purchased from Jinan Dayang New Material Technology Co., Ltd.
[0076] PE wax was purchased from Guangzhou Jingyi New Materials Co., Ltd.
[0077] OPE wax was purchased from Shandong Yiyi New Materials Co., Ltd.
[0078] Comparative Example 3 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Ethylene bis-stearamide was used to replace sodium dodecyl sulfonate in equal amounts. Ethylene bis-stearamide was purchased from Jinan Dayang New Material Technology Co., Ltd.
[0079] Comparative Example 4 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Replace C12-18 alcohol polyoxyethylene ether-9 with PE wax in equal amounts PE wax was purchased from Guangzhou Jingyi New Materials Co., Ltd.
[0080] Comparative Example 5 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Replace Tinuvin 326 with an equal amount of OPE wax.
[0081] OPE wax was purchased from Shandong Yiyi New Materials Co., Ltd.
[0082] Comparative Example 6 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Ethylene bis-stearamide was used to replace sodium dodecyl sulfonate in equal amounts, C12-18 alcohol polyoxyethylene ether-9 was replaced in equal amounts, and Tinuvin 326 was replaced in equal amounts.
[0083] Ethylene bis-stearamide was purchased from Jinan Dayang New Material Technology Co., Ltd.
[0084] Comparative Example 7 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was replaced with an equal amount of PE wax, C12-18 alcohol polyoxyethylene ether-9 was replaced with an equal amount of PE wax, and Tinuvin 326 was replaced with an equal amount of PE wax.
[0085] PE wax was purchased from Guangzhou Jingyi New Materials Co., Ltd.
[0086] Comparative Example 8 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was replaced with an equal amount of OPE wax, C12-18 alcohol polyoxyethylene ether-9 was replaced with an equal amount of OPE wax, and Tinuvin 326 was replaced with an equal amount of OPE wax.
[0087] OPE wax was purchased from Shandong Yiyi New Materials Co., Ltd.
[0088] Comparative Example 9 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was used to replace C12-18 alcohol polyoxyethylene ether-9 in equal amounts, and sodium dodecyl sulfonate was used to replace Tinuvin 326 in equal amounts.
[0089] Comparative Example 10 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was replaced with an equal amount of C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 was replaced with an equal amount of C12-18 alcohol polyoxyethylene ether-9.
[0090] Comparative Example 11 An ABS-specific color masterbatch, compared to Example 2, differs only in that: Sodium dodecyl sulfonate was replaced with an equal amount of Tinuvin 326, and C12-18 alcohol polyoxyethylene ether-9 was replaced with an equal amount of Tinuvin 326.
[0091] Experiment 1 The test samples were prepared using the ABS-specific color masterbatch from each embodiment and comparative example. The preparation methods are as follows: Step 01): Dry the ABS resin at 80℃ for 120 minutes, then weigh 25 kg of ABS resin and 1 kg of ABS special color masterbatch, add them to a high-speed mixer, mix at 300 r / min for 5 minutes to obtain mixed raw materials.
[0092] Step 02) The mixed raw materials are put into the injection molding machine for molding to obtain a test sample with dimensions of 10cm in length, 10cm in width and 1cm in thickness.
[0093] The specific parameters of the injection molding machine are set as follows: injection barrel temperature controlled at 260℃, mold temperature at 60℃, injection pressure at 120MPa, holding pressure at 65MPa, and holding pressure for 5s.
[0094] The ABS resin was purchased from Dongguan Yucheng Plastics Co., Ltd., PA-747SA01.
[0095] The total color difference between the test samples and the standard samples in each embodiment and comparative example was tested according to GB / T11186-2025 "Method for measuring the color of coating".
[0096] The testing instrument used was a spectrophotometer.
[0097] The standard sample uses the powder standard white plate specified in GB / T9086-2007 "Standard white plate for colorimetric and photometric measurements", with dimensions of 10cm in length, 10cm in width and 1cm in thickness.
[0098] Each embodiment and comparative example was produced in 10 batches, with 10 samples randomly taken from each batch, resulting in 100 samples in each embodiment and comparative example. The average total color difference was calculated by comparing the 100 samples of each embodiment and comparative example with the standard sample.
[0099] The lower the average total color difference, the closer the colors are between multiple batches and samples.
[0100] The detailed experimental data for Experiment 1 are shown in Table 1.
[0101] Table 1
[0102] According to the data comparison of each embodiment and comparative example in Table 1, the average total color difference of each comparative example is greater than 1. It can be seen that although the overall color difference of each comparative example is not large, it is still difficult to meet the requirements for high-end products. To reduce the color difference, continuous monitoring is required to adjust the amount of color masterbatch to reduce the color difference fluctuation, which leads to high process difficulty and high cost.
[0103] The average total color difference of each embodiment decreased to below 0.5. It can be seen that the color masterbatch of each embodiment can maintain a low color difference and very stable coloring even in multiple batches of continuous production without changing the formula. The product quality is stable, no continuous monitoring is required, no frequent adjustment of the color masterbatch dosage is required, the process difficulty is significantly reduced, the processing cost is significantly reduced, and it has higher economic value.
[0104] No dispersing agent was added in Comparative Example 1, while dispersing agents were added in Comparative Examples 2-11. However, the total color difference between Comparative Example 1 and Comparative Examples 2-11 was not significantly different, proving that the dispersing agent composed of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax had achieved a good dispersing effect. The addition of ordinary dispersing agents had a very limited effect on improving the dispersing performance of colorants. Only the dispersing agent composed of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 used in the examples could significantly further improve the dispersing effect, resulting in better dispersion of colorants and thus significantly reducing the average total color difference.
[0105] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. An ABS special color masterbatch, characterized by: The components include the following parts by mass: 49-52 parts of ABS resin; 24-26 parts of colorant; Stabilizer 14-16 parts; Dispersant 7.6-8.8 parts; Dispersing agent 1.5-2 parts; The dispersant is a compound of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax; The dispersing agent is a compound of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326.
2. The ABS special color masterbatch according to claim 1, characterized in that: In the dispersing agent, the mass ratio of sodium dodecyl sulfonate, C12-18 alcohol polyoxyethylene ether-9, and Tinuvin 326 is 0.8-1:0.6-0.8:0.1-0.
2.
3. The ABS special color masterbatch according to claim 2, characterized in that: The mass ratio of calcium stearate, zinc stearate, PP wax, and Fischer-Tropsch wax in the dispersant is 2.3-2.7:1-1.2:1.8-2.1:2.5-2.
8.
4. The ABS special color masterbatch according to claim 3, characterized in that: The stabilizer is barium sulfate.
5. The ABS-specific color masterbatch according to claim 4, characterized in that: The barium sulfate has a particle size ≤1μm.
6. An ABS-specific color masterbatch according to any one of claims 1-5, characterized in that: The preparation method of the ABS-specific color masterbatch is as follows: Step 1), mix ABS resin, colorant, stabilizer, dispersant and dispersing aid to obtain a premix; Step 2), the premix is extruded and granulated to obtain ABS-specific color masterbatch.
7. The ABS-specific color masterbatch according to claim 6, characterized in that: In step 2), the extrusion temperature is 165-175℃.
8. An application of the ABS-specific color masterbatch according to any one of claims 1-7, characterized in that: The ABS-specific color masterbatch is added to ABS resin to prepare colored ABS plastic products.
9. The application of the ABS-specific color masterbatch according to claim 8, characterized in that: The method for preparing the colored ABS plastic product is as follows: Step 01): Weigh ABS-specific color masterbatch and ABS raw material in a mass ratio of 0.99-1.01:24.97-25.03, mix them evenly, and obtain the mixed raw material. Step 02) The mixed raw materials are extruded or injection molded to obtain colored ABS plastic products.