4196-86-5Relevant articles and documents
Thermal properties of charring plasticizers from the biobased alcohols, pentaerythritol and 3,5-dihydroxybenzoic acid
Howell, Bob A.,Alrubayyi, Aeshah,Ostrander, Eric A.
, p. 2661 - 2668 (2019)
To be converted into a useful commercial material, poly(vinyl chloride) (PVC) must generally be heavily plasticized. Owing to its high level of chlorine, PVC is not flammable (limiting oxygen index of 45). However, addition of a plasticizer usually imparts appreciable flammability. The plasticizer is often volatilized from the polymer when it is exposed to heat. In general, plasticizers burn readily and may be the source of the flammability of formulated polymers. This flammability might be controlled by using effective plasticizers that promote char formation at the surface of the burning polymer. Two series of charring compounds, pentaerythritol esters containing aromatic moieties and phosphorus esters of 3,5-dihydroxybenzoates, have been demonstrated to be effective plasticizers for PVC. The thermal degradation of both series of compounds has been examined using thermogravimetry and infrared spectroscopy. For both sets of esters, elimination of an acid is a major degradation process. For the degradation of pentaerythritol esters, a carboxylic acid is a primary degradation product. For the alkyl 3,5-(diphenylphosphato)benzoates, degradation may lead to the formation of either a carbon or a phosphorus acid depending on structure.
A solid acid catalysis of the preparation process of benzoic acid ester plasticizer (by machine translation)
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Paragraph 0032; 0033, (2017/07/05)
The present invention discloses a solid acidify catalytic benzoic acid ester plasticizer of the preparation process, the preparation method is: to benzoic acid and alcohol as the raw material, with agent and catalyst in direct reaction to produce benzoic acid ester compound; catalytic system of the invention compared with the sulfuric acid, toluene sulfonic acid and sulfuric acid to sodium has a better catalytic activity, so the catalyst less consumption, in addition, because of the use of the is supported on a solid acid catalyst, after the reaction directly filtering can realize the separation of the catalyst, and the catalyst can be reused, makes the production process more simple, and can be basically prevent the generation of waste water, makes the production process more green environmental protection. (by machine translation)
