Leading Optical Brightener Ob - China
price: contact company for price
Optical brightener OB is poorly soluble in water, and soluble in alkane, mineral oil, and common organic solvents.
1 - Applications:
Optical Brightener OB can be used for whitening thermoplastics, PVC, PS, PE, PP, ABS, acetate fibre, paint, coating, printing ink, etc.
It can be added for whitening at any stage of process of polymers and can give the finished products a bright bluish white glaze.
2 - Directions For Use And Dosage:
The dosage should be 0.01-0.05% on weight of plastic.
Mix Optical brightener ob with plastic granulars thoroughly and carry out shaping proudction.
3 - The adding methods of optical brighteners:
According to the different producing techniques of paints, there are two ways of adding optical brighteners:
(1) Optical brighteners OB are usually added in powder form during the grinding process (also the preparation process of paste) of paints production, then grinded together with paint vehicle.
After fully grinded to microparticle with diameter ≤20μm, evenly disperse it into paints.
(2) After levigating optical brighteners OB, add it into paints by high-speed dispersion machine.
4 - Optical brightener OB used for the whitening of white enamel
Prescription (mass fraction):
white enamel (polyurethane type or alcohol acid type): 99.9%
optical brightener OB: 0.02% ~ 0.05%
Company Contact:
- Posted By: TIANJIN LEADING IMPORT & EXPORT CO., LTD
- Phone: 86-22-27824571
- Address: 2104 Jiali Center, No 73, Weijin Rd, Tianjin , Tianjin , China
- Email:

- Website: https://www.buydye.com/
Published date: August 31, 2025
- Business Description: Tianjin Leading Import & Export Co., Ltd. , established since 1997, is one of the professional global providers of dyes and pigments, which is widely used in the industry of textile, leather, paper, wood, plastic, coating, ceramic, detergent, cosmetics, metal, petroleum, and agriculture.
Especially, we focus our work on manufacture, R&D, and marketing of textile dyes and textile auxiliaries.
With qualified product and full-range technical support, our performance is satisfied by all the customers from various countries.
Regarding R&D section, we have a group of knowledgeable and experienced engineers, and work jointly with some famous institutes, which ensure us continuously to introduce new product and fresh finishing technology to our end users.
Regarding marketing team, we are hard-working, closely cooperative, willing to understand customer’s requirement.
Therefore, prompt shipment and all-inclusive service is available anytime from us.
Meanwhile, we can give a key-to-lock application solution quickly once our end users need help.
Regarding production unit, with total quality control system, we ensure our product meet international standard.
In additional, we strive on decreasing unit energy consumption and unit pollution discharge by equipment investment and technology optimization.
We believe honesty is the only principal to success.
We follow "respect, understand, innovation" as our company culture.
We do our upmost to make our product and service better and better.
Product Range
Sulphur Dyes, Acid dyes, Basic Dyes, Direct Dyes, Naphthols, Vat Dyes, Reactive Dyes, Pigment
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