Reacción #1050061

Ecuación de reacción

diethanolamine

TBPA

ethylene glycol

diethylene glycol

hydroxy-butyltin oxide

DEA

→

maleic anhydride

TBPA

Disolventes

water

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroreached 85° C.
2. 2
   Temperaturathe temperature was raised to 185° C. to 190° C
3. 3
   Otrocollected (86.8% of theory)
4. 4
   Otrogave the
5. 5
   Otrofollowing results

Procedimiento

Using a reactor setup as described in Example 1, a TBPA, glycol, maleic anhydride product was prepared using a mole ratio of anhydride to glycol of 4:5.23, a hydroxybutyltin oxide catalyst and diethanolamine (DEA) as neutralizing agent. TBPA (1.937 moles), ethylene glycol (3.377 moles), diethylene glycol (1.69 moles), hydroxy-butyltin oxide (1.49 gms), and DEA (4.41 gms) were added to the reaction at room temperature and stirred at 400 rpm. When the temperature reached 85° C., 1.937 moles of maleic; anhydride were added and the temperature was raised to 185° C. to 190° C. The reaction time was about 3 hours with 62.5 mls of water collected (86.8% of theory). The product acid number was 18.8. GPC analysis as described in Example 1 gave the following results:

Fuente