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What kinds of optical brighteners are used in plastics

Original:www.qtzbj.comAuthor:山东齐泰荧光增白Editor:admin Read: Publish time:2019-03-19 21:05【Big Mid Small
According to the introduction in dye index, there are not many kinds of optical brighteners that can be used in plastics. In recent years, fluorescence brighteners for plastics have developed rapidly in China. So far, 8 varieties have been put into production. Plastic optical brighteners are classified into four chemical structure types, namely, bibenzophenazole, for example, ci. optical brighteners 135, 184, 185, 367, 368 and 393. Distyrene benzenes, such as C.I. Distyrene biphenyls, such as C.I. Coumarins, such as optical brightener 101 (C.I.). There are also distyrene monotriazoles, such as C.I. They have different properties and are suitable for many different types of plastics.
 
C.I. C.I.Fluorescent brightener 70 foreign commodity names and manufacturers: Ranipal PCRC, PCRP, PCRS (IDI), Tinopal PCR, PCRC (CIBA).
 
Color: blue.
 
Physical and chemical properties: Tinopal PCRC, a fluorescent whitening agent, has a pale yellow appearance. Solubility (g/100g solvent) : ethanol 2.6, benzene 23.5, acetone 12.5, dioctyl phthalate
 
8.1 trimethylphenyl phosphate 10.8, dioctyl sebacate 5.6.
 
Usage: this product can be used for whitening and brightening polyvinyl chloride, polyethylene, polystyrene and other plastics. Excellent heat resistance.
 
Dosage: the general dosage in PVC soft or hard transparent products is 0.02~
 
0.05, in white or colored plastic products is 0.05~0.5 (up to 1/5 of titanium dioxide). In coloring plastic can improve the blue, purple, light red pigment of color.
 
Application performance: good light fastness.
 
C.I.Fluorescent brightener 184 (C.I.Fluorescent brightener 184) as follows: OB.
 
Domestic manufacturers: hubei wuhan chemical assistant general factory, Shanghai assistant factory, guangzhou times chemical plant.
 
Foreign commodity name and manufacturer: Uvitex OB (ob-c, ob-p) (CIBA), Whitex PNF (NSK).
 
Color: blue.
 
Physical and chemical properties: UvitexOB is a pure optical brightener, used for various special purposes. It does not contain fillers, has a greenish-yellow appearance, is odorless, and has a melting point of 200~
 
202 ℃ and decomposition temperature greater than 220 ℃, soluble in water, soluble in many organic solvents, solubility (g / 100 ml solvent, 25 ℃) : methanol, ethanol, toluene 0.09 5.3 0.04 1.3 0.5, methyl ethyl ketone, acetone, carbon tetrachloride, dioxane 2.9, 5.9 dimethyl formamide 0.8. The maximum absorption wavelength was 374nm (ethanol), and the maximum fluorescence emission wavelength was 434nm.
 
Uvitex ob-c is 10% Uvitex OB mixed with chalk. It has a yellow appearance and is mainly used in opaque PVC plastics.
 
Uvitex ob-p is 10% UvitexOB doped plasticizer dicyclohexyl phthalate. Appearance of yellow powder, it is mainly used for plasticizing PVC.
 
Usage: this product can be used for whitening and brightening thermoplastics, such as PVC, PF, PP, PS, ABS, SAN, SB, CA, PA, PMMA, etc. Good heat and light resistance. Also used for part of the fiber, paint, paint, high-grade paper, ink whitening or as security marks.
 
Usage: the optical brightener OB is used for the polymer brightener in each processing stage. Mix the brightener OB with all kinds of plastic particles at 0.01%~0.05% of the weight of plastic, and then conduct molding processing. For example, the product is added before extruding polyvinyl chloride, acetate fiber and triacetate fiber; Polyester is colored by the original pulp or mixed with the polypropylene masterbatch.
 
The optical brightener OB can be used with dye to produce special brightness, which is especially effective in color formulation.
 
Due to the low amount of optical brightener, it should be completely dispersed throughout the polymer. If any uv absorber is added to the polymer, the optimal dosage of OB should be adjusted appropriately.
 
Dosage: PVC white is 0.01%~0.05%, transparent is 0.0001%~
 
0.001%; PS white is about 0.001%, transparent is 0.0001%~0.001%; The color of ABS is 0.01%~0.05%, while the color of ABS is 0.01%~0.05%. PE and PP are colorless
 
0.0005%~0.001%, white is 0.005%~0.05%.
 
The above contents are for reference only, and the specific application shall be decided after the test. The optimal dosage of OB depends on its solubility with the polymer. Excessive dosage of OB will cause insolubility and migration.
 
Application performance: light fastness is shown in the table below

Polymer light fastness/grade polymer light fastness/grade
 
Polyvinyl chloride 4~7 alkyd melamine resin 4~5
 
Polyethylene 2-4 cellulose acetate 5-7
 
Polypropylene 1 ~ 4 polyamide 3 ~ 5
 
Polystyrene 2-5 linear polyester 7
 
Polyacrylic resin 4~5


For other models, see the article and the list of articles.
 
1. "C.I. Fluorescent Brightener 70 Dosage and Effect (C.I. Fluorescent Brightener 70)"
 
Foreign commodity names and manufacturers: Ranipal PCR C, PCR P, PCR S (IDI), Tinopal PCR, PCR C (CIBA).
 
2. Dosage and Effect of C.I. Fluorescent Brightener OB 184 (C.I. Fluorescent Brighteener 184)
 
Domestic trade name: fluorescent whitening agent OB.
 
Domestic manufacturers: Hubei Wuhan Chemical Auxiliaries General Factory, Shanghai Chemical Auxiliaries Factory, Guangzhou Times Chemical Factory, etc.
 
Foreign commodity names and manufacturers: Uvitex OB (OB-C, OB-P) (CIBA), Whitex PNF (NSK).
 
3. The Dosage and Function of Class C.I. Non-whitening Agent 185 (C.I. Fluorescent brightener 185)
 
Domestic trade names: fluorescent whitening agent EBF, PB, EB.
 
4. The Dosage and Function of C.I. Fluorescent Brightener 236 (C.1 Fluorescent Brightener 236)
 
Foreign commodity names and manufacturers: Hakkol 8542, CHP-B, PSR (KKK), Leuco-
 
Phor EGM (Clariant).
 
5. The Dosage and Effect of Class C.I. No Whitening Agent 3KCB67 (C.I. Fluorescent Brighteener 367)
 
Domestic trade name: fluorescent whitening agent KCB.
 
Domestic manufacturers: Zhejiang Hengdian Group Dyestuff Chemical Co., Ltd., Jiangsu Gaoyou Additive Factory, Hangzhou Huayang Chemical Co., Ltd., Shaoxing Hongda Chemical Co., Ltd.
 
6. "The dosage and effect of C.I. optical brightener KSN368 (C.I. Fluorescent brightener 368)"
 
Domestic trade name: fluorescent whitening agent KSN.
 
Domestic manufacturers: Hangzhou Huayang Chemical Co., Ltd., Shaoxing Hongda Chemical Co., Ltd.
 
Foreign commodity names and manufacturers: Hostalux KS, KS-C (DyStar).
 
7. Dosage and effect of C.I. optical brightener 127 378 (C.1. Fluorescent brightener 378)
 
Domestic trade names: fluorescent whitening agent 127, FP, FP-127, CES-127.
 
Domestic manufacturers: Hangzhou Huayang Chemical Co., Ltd., Shenyang Xinji Chemical Co., Ltd., Guangzhou Times Chemical Co., Ltd.
 
Foreign commodity names and manufacturers: Uvitex FP, FP-P, FP-C (Clariant).
 
8. "The dosage and effect of C.I. optical brightener OB-1 393 (C.I. Fluorescent brightener 393)"
 
Domestic trade names: fluorescent whitening agent OB-1, DBS. Domestic manufacturers: Hangzhou Huayang Chemical Co., Ltd., Gaoyou Additive Factory, Guangzhou Times Chemical Factory, etc.
 
Foreign commodity names and manufacturers: Eastobrite OB-1, OB-3 (ECP).

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