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15420-79-8

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15420-79-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15420-79-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,4,2 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 15420-79:
(7*1)+(6*5)+(5*4)+(4*2)+(3*0)+(2*7)+(1*9)=88
88 % 10 = 8
So 15420-79-8 is a valid CAS Registry Number.

15420-79-8Downstream Products

15420-79-8Relevant articles and documents

Synthesis of α,β-unsaturated esters of perfluoropolyalkylethers (PFPAEs) based on hexafluoropropylene oxide units for photopolymerization

Bonneaud, Céline,Decostanzi, Mélanie,Burgess, Julia,Trusiano, Giuseppe,Burgess, Trevor,Bongiovanni, Roberta,Joly-Duhamel, Christine,Friesen, Chadron M.

, p. 32664 - 32671 (2018/10/15)

α,β-unsaturated esters are usually synthesized for polymer applications. However, the addition of maleate (cis-configuration) to a fluorinated moiety is challenging due to its potential isomerization during esterification. Various synthetic routes were attempted and led to very low conversion or side-products. The immiscibility of both reagents combined with an easy isomerization or attack on the double bond were potential explanations. In this paper, the synthesis of maleates oligo(hexafluoropropylene oxide) is reported by Steglich esterification and the reaction conditions are discussed depending on the molecular weight of the fluorinated moieties. After UV-curing, hydrophobic polymers were obtained by copolymerization with vinyl ethers by electron acceptor-donor systems.

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