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Optical Brightener - an overview | ScienceDirect Topics
Optical brighteners. After World War II the chemists of the German company Farbenfabriken Bayer in Leverkusen found a replacement for the washing blue being used as the optical brightener. In contrast to blueing, where the yellowness of the laundry is compensated to a light grey, perceived as being 'whiter' by the human eye, optical .
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Product:Anti-wear Agent ZDDP Product Name:Zinc dialkyldithiophosphates Trade Name: ZDDP Appication: as anti-wear additives in lubricants including greases, hydraulic oils, and motor oils.
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US Patent for Image making medium Patent (Patent .
The inventive image making medium typically provides a shape or a form to the image. Desirably, at least a part of an inventive image is transparent or translucent. It is typically desired that inventive images are permanent. For example, it is preferred that coloration of inventive images does not substantially change undesirably over time.
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Our product line includes photoinitiators, nucleating agent, antioxidants, optical brighteners, UV absorbers & monomers and polymerization inhibitors. Our nucleating agents include Chemcleat NA-21, 3988, NA-11 & 3940. We offer photoinitiators such as Chemacure PI-369, 907, 2959,500 and 1173.
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Optical brightener - Wikipedia
Brighteners are used in many papers, especially high brightness papers, resulting in their strongly fluorescent appearance under UV illumination. Paper brightness is typically measured at 457 nm, well within the fluorescent activity range of brighteners. Paper used for banknotes does not contain optical brighteners, so a common method for .
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Compilation of analytical methods and guidelines for the .
Physical and chemical properties. Due to the importance of these properties on the definition of the best analytical approach for the determination of each selected migrant in foodstuffs, data were collected from different databases (Epi suite, 2000, Budavari, 2001, Lide, 1997, Properties of organic compounds, 1996) and documents like the Synoptic document (European Commission, 2003).
Optical Brighteners - Functionality & Performance .
Optical Brighteners The tendency of many organic materials to yellow is due to degradation by UV or visible light. The breakdown products absorb blue light, giving a yellow appearance in daylight. Products that absorb UV light and then transmit it in the blue range can be used to counter this effect.
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The report has been incorporated in the Industrial Process Profiles for Environmental Use (IPPEU) series, but is different from other reports in the series in that it focuses on the use of chemicals rather than on the evalua- tion of manufacturing processes and the impact of process operations on health and the environment.
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The invention relates to a multilayer product containing a first layer (S1) and a second layer (S2). The first layer is a lacquer obtained from A) one or more aliphatic polymer precursors selected from among at least one of the groups comprising components A.1 and A.2, wherein A.1) represents aliphatic oligomers that contain urethane or ester bonds and have at least two acrylate functions per .
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Why Brightening Chemicals Aren't in Green Detergents
Optical brighteners are synthetic chemicals added to liquid and powder laundry detergents to make clothing appear whiter and brighter, and thus cleaner. They are the modern day replacement for the decades-old practice of bluing—adding small amounts of blue dye to fabric to make it appear whiter.
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Optical Brightener OB, Uvitex OB, Tinopal OB, CAS 7128-64-5
>Optical Brightener OB is used as an brightener and to offset the yellowness of a polymer and yield a whiter appearance. Mainly used as thermoplastic (PVC, PS, PE, PP, ABS) optical brightener. Also for coatings, printing inks, paints, dyes, manufactured fibers, synthetic leather, waxes, fats, and oils. Recommend indoor use only.
Coatings that stay looking good - BTC Europe
Tinopal® optical brighteners (ﬂ uorescent whitening agents) are designed to brighten coatings or adhesives and sealants or to mask yellowing. Tinopal® can also be used where ﬂ uorescence can provide means to detect ﬁ lm thicknesses or for registration and identiﬁ cation purposes. Coatings that stay looking good 5
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