C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/166, 402/250
C08G 65/24 (2006.01) C07D 303/24 (2006.01) C08G 59/00 (2006.01)
Patent
CA 1203942
ABSTRACT OF THE DISCLOSURE This invention is a method of reducing the hydrolyzable chloride content of an epoxidation product, without substantially altering it otherwise. The method is characterized by comprising the steps of (1) providing a two-phase mixture of (a) an organic phase which is a solution of said product in a solvent having the characteristics of a blend of from 40 to 55 weight percent methylethylketone and from 60 to 45 weight percent toluene, and (b) an aqueous solution of from 1 to 3 equivalents of base per equivalent of hydrolyzable chloride in said product, the amount of water in said solution being such that the base concen- tration therein will not be less than equivalent to weight percent aqueous NaOH after completion of the following step, and (2) intimately intercontacting said phases, at an elevated temperature, until the hydrolyzable chloride content of said product has decreased to a satisfactory extent. The method considerably reduces the hydrolyzable chloride content of epoxidation products prepared from epichlorohydrins and phenols, aromatic amines and heterocyclic compounds containing >NH groups in the ring.
451472
Caskey Terrence L.
Martin Patrick H.
Parker Theodore L.
Smart & Biggar
The Dow Chemical Company
LandOfFree
Method of preparing epoxy resins having low hydrolyzable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of preparing epoxy resins having low hydrolyzable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing epoxy resins having low hydrolyzable... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1166905