Manufacture of polymer dispersions

Details Manufacture of polymer dispersions Manufacture of polymer dispersions

1982-03-08

1984-02-28

Michl, Paul R.

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...

524376, 524389, 524317, 524521, 524527, C08L 2714

Patent

active

044342683

ABSTRACT:
Stable dispersions of halogen-containing addition polymers, such as polyvinylidene fluoride, in water-dilutable liquid media, for example 2-butoxyethanol, are produced by dispersing pre-formed particles of the polymer, of a number-average size in the range 0.1-10 microns, in the liquid medium in the presence of a polymeric dispersant containing in the molecule a hydrophobic polymer chain and strongly ionized groups, in particular quaternary ammonium groups, the strongly ionized groups being present in such a proportion as to provide a charge density of from 0.05 to 6.0 milliequivalents per gram of the total dispersant. The dispersions thus obtained are valuable as a basis for water-borne coating compositions.

REFERENCES:
patent: 2866721 (1958-12-01), Hetherington
patent: 2976257 (1961-03-01), Dawe
patent: 3075939 (1963-01-01), Bauer
patent: 3232903 (1966-02-01), Schmidle
patent: 3331801 (1967-07-01), Osmond
patent: 3691123 (1972-09-01), Clarke
patent: 3701747 (1972-10-01), Osmond
patent: 3716511 (1973-02-01), Haskell
patent: 4141873 (1979-02-01), Dohany
patent: 4341685 (1982-07-01), Miyake

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