Optical Brightening Agent

详情

Specification

ITMS                        Standard             

APPEARANCE               Light Yellow To Yellow Brownish Liquid

CONSISTENCY

(ABSORPTANCE RATIA)       **0±3.0%                 

STRENGTH                   **0±2%

DENSITY (*0℃)               1.***1.*5

PH VALUE(*0℃)               ***1

VISCOSITY (*0℃)             *0.0mPa.s MAX

INORGANIC SALT             8% MAX

 

Chemical construction: Triazine Stilbene Derivates (HEXA SULFA)

Appearance: Clear, yellowish to yellowish-brown liquid

Whitening intensity: **0±3 points compared with standard

Specific gravity(*5℃): About 1.1g/cm3

Storage stability: OBAHS  has good stability to storage and cold temperatures. Prolonged storage at temperatures below**0℃can result in product freezing. Frozen procuct can be restored to its original state without lost of effectiveness by leaving to stand at room temperature or heating briefly to temperatures no higher than *0℃.

SHADE

OBAHS gives a slightly reddish white in all applications. Even at high concentrations it does not green off.

ECOLOGY/TOXICOLOGY

The usual hygiene and safety rules for handling chemicals should be observed in storage, handling and use. The produc must not be swallowed.

APPLICATION

Applied in coating

OBAHS can be used to produce high and very high white coated papers

OBAHS does not have adequate affinity for coating pigments and synthetic binders, therefore the carrier are need, i.e.it’s the best effect to applied with about 1.0% carrier. the highest whiteness, are to be achieved with SBL*1.Suitable carriers, in order of their effectiveness, are PVA,CMC,starch and synthetic co-binders. It can be incorporated in coating compounds ranging in PH from ***1.

Average dosage: 1.**4.0 parts, calculated on the coating pigment.

OBAHS at the size press

OBAHS has been developed for high and very high levels of whiteness which cannot be achieved with other whitener due to greening.

Having only moderate affinity for the cellulose fiber, OBAHS at size press allows for a highly uniform whiteness. It is equally effective with all starches used in size press application and can be applied together with PVA, CMC, anionic and slightly cationic, and synthetic sizing additives.

Average dosage: ***0g/l size press liquor