Toluene → HCID 87097284, compound

To the above described solid component were added 40 ml of toluene and titanium tetrachloride was then added thereto to give a titanium tetrachloride/toluene volume ratio of 3/2, followed by raising the temperature to 90° C. Under stirring, a mixed solution of 2 ml of di-n-butyl phthalate and 5 ml of toluene was dropwise added thereto for 5 minutes and stirred for 2 hours at 120° C. The thus resulting solid material was separated by filtration at 90° C. and washed 2 times with 100 ml of toluene at 90° C. Further, titanium tetrachloride was newly added to give a titanium tetrachloride/toluene volume ratio of 3/2 and stirred at 120° C. for 2 hours. The resulting solid material was separated by filtration at 110° C. and washed 7 times respectively with 100 ml of n-hexane at room temperature to obtain 5.5 g of Component A.

1. additionwas then added

ORD record

ord-9f80ed2118544e17a5ab4e3df853daad

Source dataset

uspto-grants-1993_01

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05177043