Methods for inhibition of scale in high brine environments

Details Methods for inhibition of scale in high brine environments Methods for inhibition of scale in high brine environments

1989-06-15

1990-06-05

Hruskoci, Peter

Liquid purification or separation

Processes

Preventing, decreasing, or delaying precipitation,...

1662441, 252180, C02F 514

Patent

active

049311891

ABSTRACT:
A method for preparation of an aminomethylene phosphonate useful as a scale inhibitor in high brine environments. The method comprises phosphonomethylating an amine of the formula ##STR1## wherein x is an integer from 1 to 6 and the Z's are selected from the group consisting of hydrogen and --CH.sub.3, to produce an aminomethylene phosphonate of the formula ##STR2## wherein x and the Z's are defined as above and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are indepenedently selected from the group consisting of hydrogen and --CH.sub.2 PO.sub.3 H.sub.2, such that at least about 80% of the R.sup.1, R.sup.2, R.sup.3 and R.sup.4 in a mixture of the aminomethylene phosphonate is --CH.sub.2 PO.sub.3 H.sub.2. Related methods and compositions are also disclosed.

REFERENCES:
patent: 3288846 (1966-11-01), Irani et al.
patent: 3705005 (1972-12-01), Cerri et al.
patent: 3809654 (1974-05-01), Mitchell
patent: 3816333 (1974-06-01), King et al.
patent: 4012440 (1977-03-01), Quinlan
patent: 4051110 (1977-09-01), Quinlan
patent: 4075243 (1978-02-01), Quinlan
patent: 4080375 (1978-03-01), Quinlan
patent: 4088574 (1978-05-01), Quinlan
patent: 4187245 (1980-02-01), Redmore et al.
patent: 4234511 (1980-11-01), Buckman
patent: 4459241 (1984-07-01), Wilson et al.

Affiliated with

Also associated with

Rating

Methods for inhibition of scale in high brine environments does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods for inhibition of scale in high brine environments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for inhibition of scale in high brine environments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-490086