Optical Brighteners

MPI’s optical brighteners (OB) are fluorescent whitening agents, designed to brighten colours or mask yellowing in plastics, lacquers, paints, inks, photo-processing solutions and fibres. They function by absorbing invisible ultraviolet radiation and re-emitting it as visible light in the blue range of the spectrum. Optical brighteners are particularly effective in masking the yellowish cast sometimes observed in plastics and fibres after high temperature processing operations. They are also used in substrates containing pigments or dyes to make the colours appear more brilliant.

Bright 100 (OB)

Fluorescent Whitening Agent

Chemical name:
2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

CAS number:
7128-64-5

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Bright 200 (OB-1)

Fluorescent Whitening Agent

Chemical name:
2,2'-(vinylenedi-p-phenylene)bisbenzoxazole

CAS number:
1533-45-5

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Bright 420 (KCB)

Fluorescent Whitening Agent

Chemical name:
2,2'-(naphthalene-1,4-diyl)bis(benzoxazole)

CAS number:
5089-22-5

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Bright 450 (KSN)

Fluorescent Whitening Agent

Chemical name:
2-[4-[2-[4-(benzoxazol-2-yl)phenyl]vinyl]phenyl]-5-methylbenzoxazole

CAS number:
5242-49-9

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Bright FP-127

Fluorescent Whitening Agent

Chemical name:
4,4'-bis(2-methoxystyryl)-1,1'-biphenyl

CAS number:
40470-68-6

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Bright SWN

Fluorescent Whitening Agent

Chemical name:
7-(diethylamino)-4-methyl-2-benzopyrone

CAS number:
91-44-1

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Bright 100 (OB)

Fluorescent Whitening Agent

Chemical name:
2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

CAS number:
7128-64-5

Read more

Bright 200 (OB-1)

Fluorescent Whitening Agent

Chemical name:
2,2'-(vinylenedi-p-phenylene)bisbenzoxazole

CAS number:
1533-45-5

Read more

Bright 420 (KCB)

Fluorescent Whitening Agent

Chemical name:
2,2'-(naphthalene-1,4-diyl)bis(benzoxazole)

CAS number:
5089-22-5

Read more

Bright 450 (KSN)

Fluorescent Whitening Agent

Chemical name:
2-[4-[2-[4-(benzoxazol-2-yl)phenyl]vinyl]phenyl]-5-methylbenzoxazole

CAS number:
5242-49-9

Read more

Bright FP-127

Fluorescent Whitening Agent

Chemical name:
4,4'-bis(2-methoxystyryl)-1,1'-biphenyl

CAS number:
40470-68-6

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Bright SWN

Fluorescent Whitening Agent

Chemical name:
7-(diethylamino)-4-methyl-2-benzopyrone

CAS number:
91-44-1

Read more
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