Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ethylenically unsaturated reactant admixed with either...
Patent
1990-12-06
1993-12-28
Short, Patricia A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ethylenically unsaturated reactant admixed with either...
525246, 525426, 525445, 525454, 525455, 525468, 525479, 525529, 525530, 525531, 527312, 527314, 527315, C08F28300, C08F28312
Patent
active
052740285
ABSTRACT:
In an improved method for producing a surface graft of a hydrophilic polymer upon a preformed solid or semi-solid polymer substrate having hydroperoxide groups along its surface, n-vinyl pyrrolidone is utilized as the surface-grafting monomer, the substrate is selected to be insoluble in n-vinyl pyrrolidone, and the polymerization is carried out in aqueous alkaline conditions utilizing a combination of metal salts to provide a variable valence metal ion in a reduced state capable of oxidizing to suppress homopolymerization of the monomer in the solution.
When the substrate is at least partially soluble in the n-vinyl pyrrolidone, an ethylenically unsaturated monomer having a higher reactivity with the substrate than n-vinyl pyrrolidone is added to the alkaline polymerization solution as a "seeding" monomer. Addition of the "seeding" monomer results in a surface-grafted copolymer effectively externalized from the substrate.
REFERENCES:
patent: 3627836 (1971-12-01), Getson
patent: 3631087 (1971-12-01), Lewis et al.
patent: 3700573 (1972-10-01), Laizier et al.
patent: 3916033 (1975-10-01), Merrill
patent: 3939049 (1976-02-01), Ratner et al.
patent: 4146489 (1979-03-01), Stambaugh et al.
patent: 4228256 (1980-10-01), Schmitt
patent: 4229273 (1980-10-01), Wajs
patent: 4311573 (1982-01-01), Mayhan et al.
patent: 4589964 (1986-05-01), Mayhan et al.
patent: 4618644 (1986-10-01), Liu
patent: 4729914 (1988-03-01), Kliment et al.
Bertrand William J.
Coulter Stephen L.
DeAntonio Paul
Reich Cary
Baxter International Inc.
Bostich June M.
Henry Janis
Kondzella Michael
Short Patricia A.
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