Optical Brightener Agent 199:1 powder
I Physicochemical properties:
Chemical name: (1-cyano styyl,4-P-Cyan styyl)benzene
Molecular formula: C24H16N2
Molecular weight: 332.2
Appearance: pale yellow powder with slight cream white Purity: ≥98%
Melting point: 184-186℃
Ionicity: nonionic
Fineness: through 100-mesh
II Applications and features:
It is mainly used for whitening and brightening of polyester fiber and blend fabric as well as plastic chemical fiber and artificial leather.
OBA 199:1 whitening agent is stilbene like compound, soluble in various organic solvents, not soluble in water, appearing nonionic. Its prominent feature is to formulate with 199, 199:2 and other structural whitening agent as certain proportion and produce additive effect (synergistic effect). Compared with un-formulated whitening agent, formulated whitening agent can enhance about 15% of synergistic effect. Add formulated whitening agent into various additives to formulate 20% lactescence, which is used for whitening of polyester fiber in printing and dyeing industry, under the condition of achieving same whiteness and color light, dosage of formulated whitening agent is 10-15% less than dosage ofun-formulated OBA 199 or 199:1 serous fluid, so it is in possession of prominent commercial value.
III Methods of application:
1. When used for whitening of reclaimed materials of chemical fiber, especially of short chemical fiber, the application method is basically same with that of ER-I, but the whiteness is better than that of OBA 199 under the condition of same dosage; or the dosage can be about 10-15% less under the condition of achieving same whiteness.
2. When preparing 20% lactescence by adopting formulated whitening agent, the grinding and operating method is basically same with that of OBA 199 but the whiteness is better than that of unformulated one under the condition of same dosage; or the dosage can be about 10- 15% less under the condition of achieving same whiteness.
·IV Packaging and storing:
25kg/drum, cardboard drum (inner lining plastic bag) for package.
It shall be stored in shady and dry warehouse with storage period more than or equal to 2 years
