Chemical Name: Optical Brightener DYB

Specification

Chemistry：Derivative of Amino stillbene/Disodium Type.

Apperance：Slight gray-yellowish powder

Odor：none

PH Range：7.0～9.0

Ionic Character: Anionic

Color shade：Bluish white shade or as customer requirement

Characteristics

Very good dyeing yield at room temp.., and as good stability to alkalis and hydrogen peroxide.

Can dissolved in the hot water.

High whiteness increasing power.

Excellent washing fastness.

Minimum yellowing after high temperature drying.

Contains bluing agent for its unique bluish color tone.

Fastness

Light                    2-3

Washing                  3

Perspiration(alkali)         4-5

          (acid)          3-4

Dry heat fixation           4

Stability

Peroxide bleaching liquid    Very good

Sodium Chloride liquid      Good

Reductant                 Good

Hard water                Good

Application

Suitable for brightening cotton or nylon fabric with exhaust dyeing process under room temperature, has powerful strength of whiteness increasing, can achieve extra high whiteness.

Suggested Usage

-Exhaustion (With Scouring & Bleached cotton）

0.1-0.8%（o.w.f）           DYB

0.5%                      Sodium sulfate

Liquor ratio                 30:1

Time/temperature            30-40min at 40℃

* optimum PH range for the process：PH 7-12

-One bath scouring & bleaching by hydrogen peroxide process

0.1-1.0%(o.w.f)              DYB

2g/l                        Scouring agent

3g/l                        Caustic soda(50%)

10g/l                       Hydrogen peroxide (35%)

2g/L                        Hydrogen peroxide stabilizer

Liquor ratio                  10:1 -20:1

Time/temperature             40-60min at 90-100℃

-The following processes are available too

Desizing/Scouring → Hydrogen peroxide bleaching → optical dyeing

Desizing/Scouring → NaClO2 bleaching → Hydrogen peroxide bleaching → optical dyeing

Packing, transport and storage

25kgs in one cardboard boxes.

The product is non-hazardous,chemical properties stability,be used in any mode of transport.

Please keep it at cool area and avoid the direct rays of the sun, storage for one year.

Important hint

This material is made only for internal study, and the above information and the conclusion obtained is based on our current knowledge and experience, so before applying it to the intended use, this material must be confirmed by users by testing for the intended conditions of use.