Method of making polyurethane powder

Details Method of making polyurethane powder Method of making polyurethane powder

1975-07-17

1977-06-28

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08G 1808

Patent

active

040325164

ABSTRACT:
Method for preparing polyurethane resin directly in finely divided form in which method a first reactant for forming the polyurethane is emulsified as fine droplets with the aid of special surfactants and controls in an inert organic liquid medium in which it and polyurethane resin are insoluble, a second reactant also insoluble in the liquid is introduced into the liquid medium and interacted with the droplets of the first reactant to form fine particles of solid polyurethane resin protected from agglomeration by the surfactant, and the particles of polyurethane resin are separated from the liquid medium.

REFERENCES:
patent: 3236812 (1966-02-01), McElroy
patent: 3312666 (1967-04-01), Knipp
patent: 3317635 (1967-05-01), Osmond
patent: 3382297 (1968-05-01), Thompson
patent: 3560447 (1971-02-01), Bingham
patent: 3655627 (1972-04-01), Hutzler
patent: 3787525 (1974-01-01), McGarr
patent: 3817886 (1974-06-01), McGarr
patent: 3894994 (1975-07-01), Day
patent: 3917741 (1975-11-01), McGarr

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