Method of manufacturing water-soluble polymers, polymers manufac

Details Method of manufacturing water-soluble polymers, polymers manufac Method of manufacturing water-soluble polymers, polymers manufac

1997-07-21

1999-04-06

Lipman, Bernard

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 200

Patent

active

058919724

ABSTRACT:
Homopolymers and/or copolymers are manufactured by polymerizing ethylenically monounsaturated monomer(s) in an aqueous solution in a reaction vessel containing compounds which contain a phosphorus atom of degree of oxidation less than 5, phosphorous compounds being introduced in amounts of 0.005-0.49 gram-atom phosphorus per mol of unsaturation in said ethylenically unsaturated monomer(s) in the presence of hydrogen peroxide and in the absence of any agent(s) which decomposes hydrogen peroxide thereby forming free radicals, in the absence of any other generator of free radicals, and in the absence of any per salt and/or any other transfer agent.

REFERENCES:
patent: 2789099 (1957-04-01), Rife et al.
patent: 4621127 (1986-11-01), Denzinger et al.
patent: 5185413 (1993-02-01), Yoshinaga et al.
patent: 5294686 (1994-03-01), Fiarman et al.

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