Cationic monomer delayed addition process

Details Cationic monomer delayed addition process Cationic monomer delayed addition process

1990-03-05

1992-01-14

Schofer, Joseph L.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524812, 524815, 524829, C08L 4100

Patent

active

050811827

ABSTRACT:
Water-in-oil emulsions of cationic water-soluble copolymers which are prepared by incorporating only a portion of the cationic monomer in the aqueous phase prior to forming the water-in-oil emulsion in which polymerization will occur, forming the emulsion, adding the balance of the cationic monomer such that essentially no polymerization occurs immediately after the addition, and polymerizing the monomers. Copolymers prepared by this process show improved performance over conventionally prepared cationic copolymers.

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patent: 4330450 (1982-05-01), Lipowski et al.
patent: 4696962 (1987-09-01), Danner et al.

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