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A new brominated polymeric additive for flame retardant glass-filled polybutylene terephthalateAttention is called to the undesirable effects (poor ultraviolet light stability and blooming) sometimes introduced by brominated flame retarders. A brominated polymeric additive (BPA) with little or none of these undesirable side effects is compared with decabromobiphenyl oxide (DBBPO). The additive bears the product name F-2300. It is found to be more easily dispersed than DBBPO. The F-2300 is as effective as the DBBPO in the oxygen index test. The improved efficiency of the F-2300 may be explained by its better dispersion in polybutylene terephthalate (PBT). Glass-filled PBT containing F-2300 is found to be more resistant to UV degradation than DBBPO-containing formulas. Formulations with F-2300 therefore have a longer useful outdoor life. F-2300 is a diglycidyl-type polymer containing 50 percent aromatically bound bromine. Its melting point is 112 C, and it is stable up to 372 C. It is pointed out that since its melts at a relatively low temperature, it can be introduced into the formulation as a large agglomerate and still be dispersed evenly throughout the polymer.
Document ID
19830060636
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Nir, Z.
(NASA Ames Research Center Moffett Field, CA, United States)
Kourtides, D. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Parker, J. A.
(NASA Ames Research Center Moffett Field, CA, United States)
Bar-Yaacov, Y.
(NASA Ames Research Center Moffett Field, CA, United States)
Minke, R.
(Makhteshim Chemical Works, Ltd. Beersheba, Israel)
Touval, I.
(M & T Chemicals, Inc. Rahway, NJ, United States)
Date Acquired
August 11, 2013
Publication Date
August 1, 1982
Publication Information
Publication: Journal of Fire Retardant Chemistry
Volume: 9
Subject Category
Nonmetallic Materials
Accession Number
83A41854
Distribution Limits
Public
Copyright
Other

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