Sylic® Optical Brightening Agent 4BK / Blanqueador optico 4BK para algodon

Product Description

Sylic® Optical Brightening Agent 4BK

CHEMICAL STRUCTURE
Sulfonated diaminostilbene derivatives
PROPERTY

Appearance	Yellow powder
Ionicity	Anion
Dyeing shade	Bluish/ Greener

APPLICATION
It's suitable for Optical Brightening Agent on cellulosic fabric, cotton, yarn, linen and nylon fibre. Its affinity is excellent and primarily for exhaust application, better washing fastness and good stability to peroxide. It's quality is counter of Synowhite 4BK .
PROCESS METHOD
1. Normal cotton brightening process:
Dosage:  4BK 0.2-0.6% o.w.f; Na2SO4: 5-10g/l; Temperature: 90-100ºC; Time:20-30min; Bath ratio: 1:10-20
2. Peroxide bleaching for cotton:
Dosage:  4BK 0.1-0.6% o.w.f; NAOH (30%): 1-4 g/l;
H2O2(35%):4-8 g/l; Na2SiO4: 10-15 g/l; Detergent: 0.5-1.0 g/l;
Temperature:100ºC; Time:30-45 min; Bath ratio: 1:10-20
3. Polyester & cotton blends:
A. Peroxide bleaching:
Dosage: NAOH (30%): 1-4 g/l; H2O2(35%): 4-8 g/l; Na2SiO4: 10-15 g/l; Detergent: 0.5-1.0 g/l; Temperature:100ºC; Time: 30-45 min; Bath ratio: 1:10-20
B. Polyester brightening:
Dosage: ER-I/ER-II: 0.2-0.8% o.w.f; Dispersant: 0.5 g/l;
Temperature:110-130ºC; Time: 30 min; Bath ratio: 1:10-20
C. Cotton brightening:
Dosage: 4BK: 0.2-0.6% o.w.f; NA2SO4:2-5 g/l;
Temperature:90-100ºC; Time:20-30 min; Bath ratio: 1:10-20
Detailed process is according to customer's request.
STORAGE & PACKING
Sealed in storage, keeping date is 12 months under room temperature.
25kg carton box or as per customer's request.






                    
Factory Profile:
We're a famous Silicone producer in China with over 30000 tons annual output. Our factories are located in
Zhejiang province, nearly closed to Shanghai. Your visit to our factory will be greatly welcomed.

Technical Support:
We have professional technical team which support target samples testing from customers around the World. Counter
samples will be provided after evaluation. Meanwhile customization service is available in our factory. What's more, we
can also provide pre-shipment samples for new customers during our first cooperation. 


Shipment:
Whether you have your own freight-forwarder or  you would like us to organize shipment ; whether you require delivery
FOB to a port in China or CIF to a port near you,we are happy to quote and supply whichever way you choose. Please
feel free to discuss all options with us . 
Our delivery time : Within 10 days after got T/T or L/C bank copy.


Payment:
We support a variety of payment terms like T/T, L/C at sight, DP, C.A.D etc. If customers need forward payment term
like T/T 30 days or L/C 60 days, we will also try to meet their demand based on customers' reputation and consumption.
 
Certificate:
Our products' quality has been approved by ISO9001 quality management system, OKEO-TEX, GOTs, etc.




Market:
Our partners all around the world.