OPTICAL
BRIGHTENING AGNET OB,OPTICAL BRIGHTENER AGENT OB, FLUORESCENT BRIGHTENER
OB, FLUORESCENT WHITENNING AGNET OB,C.I.NO.184,CAS
NO.7128-64-5
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Chemical name
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2,5-Di
(5’-tert-butyl
benzoxazol-2’-yl)
thiophene
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CAS NO.
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7128-64-5
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Introduction
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Optical
brightener agent OB,Sunpal OB is widely used in thermoplastic plastics, like PVC, PE, PS, ABS,
SAN, SB, CA, PA, acrylic resin, polyester fiber, paint, coating, the
brightening of printing ink.
Optical
brightener agent OB,Sunpal OB can be used for PS, PVC, PA & PC
based food packings.
Optical
brightener agent OB,Sunpal OB absorbs high energy radiation in the
ultraviolet to violet region (330nm-380nm) on the part of characteristic
molecules and emit lower energy radiation in blue region in visible
spectrum (400nm-450nm), which yields the counteracting the yellowing
appearance.
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Physical properties
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1.
Appearance:? Light yellowish powder
2.
M.P.: ?
198-203 ℃
3.
Assay:
99% min.
4.
Ash content:
0.1% max.
5.
Moisture:? 0.3% max.
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Advantage
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1.
Odorless, does not bring smells to the polymers.
2.
Light fastness is very good.
3.
Stable to heat, and can be used in plastics
which require high processing temperature.
4.
Low vapor pressure, very little or no loss
during processing.
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Applications
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1. Transparent: 0.001wt% based on polymer weight
2. Coloured: 0.01-0.05wt% based on polymer weight
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Toxicity & Safety
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Sunpal
OB can be safely handled without irritation caused to the skin.
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Package
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In 25 kg
fiber drum with inner plastic bag.
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Storage
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In a closed system and dry , dark place without any light exposure.
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OPTICAL BRIGHTENER AGENT OB
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Tel:86-571-8565-5918
86-571-8821-2363
Fax:86-571-8821-2215
Email:
sales@sunnychemical.com
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links
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Silylating Reagent
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Polymer additive
•PURSTAB 55
•PURSTAB 65
•PURSTAB 78
•PURSTAB 85
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•UV-P,CAS#2440-22-4
•UV-234,CAS#2440-22-4
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•UV-770,CAS#52829-07-9
•UV-944,CAS#70624-18-9
•AO-30,CAS#1843-03-4
•AO-168,CAS#31570-04-4
•AO-264,CAS#128-37-0
•AO-1010,CAS#6683-19-8
•AO-1076,CAS#2082-79-3
•AO-1135,CAS#125643-61-0
•AO-1425,CAS#65140-91-2
•AO-1790,CAS#40601-76-1
•AO-2225
•AO-2777
•AO-3114,CAS#27676-62-6
•AO-5057,CAS#68411-46-1
•AO-DLTDP,CAS#123-28-4
•AO-DSTDP,CAS#693-36-7
•OBA-OB,CAS#7128-64-5
•OBA-OB-1,CAS#1533-45-5
•OBA-KCB,CAS#5089-22-5
•OBA-CBS-X,CAS#54351-85-8
•OBA-FP,CAS#40470-68-6
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Food
additive
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Biocide & Antimicrobial
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Fine Chemical
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