Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Patent
1994-06-23
1996-11-05
Jordan, Charles T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
524608, 525430, 528488, C08F 610
Patent
active
H00016136
ABSTRACT:
A process for reducing the concentration of epichlorohydrin by-products in the manufacture of polyamide-epichlorohydrin resins, comprising reacting polyaminopolyamide prepolymer in aqueous solution with epichlorohydrin and an immiscible solvent for the epichlorohydrin, continuing the reaction of the prepolymer with the epichlorohydrin to produce the desired viscosity of the aqueous phase, stabilizing the resin product by diluting or acidifying the aqueous phase, separating the solvent from the aqueous resin, and treating the solvent phase with caustic to convert epichlorohydrin by-products to epichlorohydrin for recycling.
REFERENCES:
patent: 3655506 (1972-04-01), Baggett
patent: 3947383 (1976-03-01), Baggett
patent: 4222921 (1980-09-01), Van Eenam
patent: 4975499 (1990-12-01), Bachem
patent: 5017642 (1991-05-01), Hasegawa
patent: 5019606 (1991-05-01), Marten
patent: 5079019 (1992-01-01), Hirsbrunner et al.
patent: 5189142 (1993-02-01), Devore
patent: 5239047 (1993-08-01), Devore
patent: 5256727 (1993-10-01), Dulany
Hardee J. R.
Hercules Incorporated
Jordan Charles T.
Szanto Ivan G.
LandOfFree
Polyamide-epichlorohydrin wet-strength resins with reduced conte does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyamide-epichlorohydrin wet-strength resins with reduced conte, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyamide-epichlorohydrin wet-strength resins with reduced conte will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2006215