Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-12-14
1978-04-18
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
252180, C02B 506
Patent
active
040850455
ABSTRACT:
A process for inhibiting scale formation using a low molecular weight hydrolyzed polyacrylamide prepared by a process involving simultaneously and continuously charging separate streams of acrylamide monomer, ammonium persulfate (as catalyst) and mercaptoalkanoic acid (as chain transfer agent) to a reaction zone containing water under reflux, the rate of charging being such that the heat of polymerization is sufficient to maintain reflux in the reaction zone without exceeding the capacity of the condenser to remove the heat of reaction, and then reacting the polymer product with sufficient aqueous caustic to hydrolyze from about 60 to 90% of the amide groups in the polymer product.
REFERENCES:
patent: 2820777 (1958-01-01), Sven et al.
patent: 3247171 (1966-04-01), Walker et al.
patent: 3380947 (1968-04-01), Galgoczi
patent: 3463730 (1969-08-01), Booth et al.
patent: 3589998 (1971-06-01), Rice et al.
patent: 3756257 (1973-09-01), Rice et al.
patent: 3846390 (1974-11-01), Ito et al.
patent: 4008164 (1977-02-01), Watson et al.
Bovey et al., Emulsion Polymerization, Interscience, N.Y., 1955, pp. 278 & 279.
Duffy Richard Joseph
Higgins Mark Allan
Schiller Arthur Maurice
Song Dae Suk
Witschonke Charles Richard
American Cyanamid Company
Hart Charles N.
Hruskoci Peter A.
Sullivan John L.
LandOfFree
Low molecular weight hydrolyzed polyacrylamide used as a scale i does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low molecular weight hydrolyzed polyacrylamide used as a scale i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low molecular weight hydrolyzed polyacrylamide used as a scale i will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2146001