Halogenation and addition of some heavy metallic oxides have been in use for a few decades to impart flame-retarding properties to polymers. In this study bromine was added to the polymer (polyester of propylene glycol ϩ phthalic anhydride) by means of decabromodiphenyloxide (DBDPO) at varying conce
Flame retardant polyesters. I. Phosphorous flame retardants
✍ Scribed by Seung-Cheol Yang; Jae Pil Kim
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 147 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0021-8995
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## Abstract Two flame‐retardant polyesters were polymerized with two types of phosphorous flame retardants. 3‐(Hydroxyphenyl phosphinyl)propanoic acid (HPP) was used as a main‐chain type, and 9,10‐dihydro‐9‐oxa‐10‐2,3‐dicarbonylpropyl‐10‐phosphophenanthrene‐10‐oxide (DI) was used as a pendant type.
The water-soluble organophosphorus compound, namely, hexahydroxymethylamidocyclotriphosphatriazatriene (HHMAPT) was synthesized by reacting phosphonitrile chloride with liquid ammonia followed by reaction with formaldehyde. It is rich in phosphorus and nitrogen and as a polyfunctional compound it ca