Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1984-09-28
1991-07-16
Lipman, Bernard
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525366, 525367, 525368, 525369, 525370, 525371, 526 80, 5263171, C08F 842
Patent
active
050326465
ABSTRACT:
Substantially homogeneous (meth)acrylic acid/itaconic acid copolymers of number average molecular weight of 500 to 7000 are prepared by copolymerizing in aqueous solution 5 to 90 mole percent acrylic or methacrylic acid monomer with 95 to 10 mole percent itaconic acid monomer at 80.degree. to 120.degree. C. in the presence of a polymerization initiator, the acrylic or methacrylic acid monomer and at least half of the initiator being added separately and continuously to the itaconic acid monomer throughout the polymerization period. The copolymers are employed at a level of from about 0.1 to 100 ppm for prevention of alkaline calcium and magnesium scale formation, such as during seawater evaporative desalination.
REFERENCES:
patent: 2547815 (1951-04-01), Johannes de Nie
patent: 2783217 (1957-02-01), Honn et al.
patent: 3308067 (1967-03-01), Diehl
patent: 3366509 (1968-01-01), Coglianese et al.
patent: 3507647 (1970-04-01), Sanders
patent: 3738972 (1973-06-01), Moriyama et al.
Marvel et al, J. Org. Chem., 24, 599 (1959).
Nagai et al, Kobunshi Kagaku, 17, 748 (1960).
Akers Lawrence C.
Jaeger Howard R.
Lipman Bernard
Pfizer Inc.
Richardson Peter C.
LandOfFree
(Meth)acrylic acid/itaconic acid copolymers, their preparation a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with (Meth)acrylic acid/itaconic acid copolymers, their preparation a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and (Meth)acrylic acid/itaconic acid copolymers, their preparation a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-132452