Articles & News Stories

Bisphenol A+Epichlorohydrin reaction

Bisphenol A+Epichlorohydrin reaction
of 3
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Related Documents
   Reaction of  BISPHENOL A with  EPICHLOROHYDRIN  1. Step: NaOH reacts with the bisphenol A, to give the bisphenol A sodium salt: he salt has an o! gen with three pairs of electrons that it isn#t sharing with an one $ carbon atom on a nearb epichloroh drin could use some electrons. hat atom is the carbon atom right ne!t to the chlorine. %. Step: O! gen, donates a pair of its electrons to the carbon. &arbon can onl share four pairs of electrons at once, so one pair has to go if it wants to ta'e the o! gen#s pair ( it)s a electron pair with chlorine.  On the end we have a molecule similar to bisphenol A, onl with an epo! group on it. And wealso get Na&l. hese prepol mers come in different molecular weights. How big or small the prepol mer getsdepends on the ratio of epichloroh drin to bisphenol A in the reaction mi!ture. *ith a ratio at two molecules of epichloroh drin for ever molecule of bisphenol A: Result is an epo! group on the other side, too. he reaction then stops, as there are no more bisphenol A salt groups left to react.   +f there are less than two molecules of epichloroh drin for ever isphenol A molecule, not all of the bisphenol A salt groups can react with epichloroh drin. -et#s sa our ratio now is three molecules of epichloroh drin for ever two molecules of bisphenol A. *hen all the epichloroh drin molecules have reacted we#re left with a /:/ mi!ture of these two molecules: hese two molecules then can react together to get this molecule:    *e#re left now with a dimer 0sodium salt. *hen a water molecule comes along 0 we made a water molecules when we made the sodium salt of bisphenol A a pair of electrons from the o! gen will attac' one of the water#s h drogens, stealing it from the water. he smaller molar ratio of epichloroh drin to bisphenol A gives epo! resin of higher molecular weight. 2olar ratio epichloroh drine3bisphenol A of 1.4 gives 2w of 5//g3mol, while 1.%% gives 16//g3mol.
Related Search
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!