C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/5470
C08L 33/24 (2006.01) C08J 3/09 (2006.01) C08L 33/20 (2006.01)
Patent
CA 1159175
ABSTRACT OF THE DISCLOSURE Water-in-oil emulsions of polyacrylamide or other water soluble vinyl addition polymers having amide functionality can be reacted with form- aldehyde and a secondary amine containing 2-8 carbon atoms followed by quat- ernization to prepare water-in-oil emulsions of quaternized cationically mod- ified polyacrylamides. The resultant water-in-oil emulsions are stabilized against cross linking by the addition to the water-in-oil emulsions of an aqueous solution of a water soluble phosphorous compound having a P-H bond. The phosphorous containing compound is added in such a quantity so as to pro- vide from 1.6-25% by weight of the phosphorous compound based on the weight of the polymer contained within the water-in-oil emulsion and to simulta- neously adjust the pH of the water-in-oil emulsion to a range of between 3.5- 5Ø The stabilized water-in-oil emulsions can be readily inverted into aqueous solution causing the solubilization of the polymer in the aqueous without the need for heating the water-in-oil emulsion at high temperatures for extended periods of time.
327901
Nalco Chemical Company
Smart & Biggar
LandOfFree
Preparation of stable water-in-oil emulsions of cationically... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of stable water-in-oil emulsions of cationically..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of stable water-in-oil emulsions of cationically... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-490832