Production of polyurethane powder

Details Production of polyurethane powder Production of polyurethane powder

1977-03-23

1978-01-24

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AM, 260 775CH, C08G 1808

Patent

active

040703460

ABSTRACT:
The instant invention is directed to the production of polyurethane or polyurea powder. The process broadly comprises atomizing an isocyanate, polyisocyanate or isocyanate pre-polymer in the liquid state and bringing the atomized particles into contact with a gaseous diamine or polyamine until they are converted to the solid state.

REFERENCES:
patent: 3096001 (1963-07-01), Boe et al.
patent: 3190857 (1965-06-01), Fauser et al.
patent: 3617367 (1971-11-01), Cummings
patent: 3652333 (1972-03-01), Warren
patent: 3655627 (1972-04-01), Hutzler et al.
patent: 3674720 (1972-07-01), Dunn
patent: 3817886 (1974-06-01), McGarr
patent: 3850880 (1974-11-01), Hakanson et al.
patent: 3860565 (1975-01-01), Barber
patent: 3868350 (1975-02-01), Reiff et al.
patent: 3874898 (1975-04-01), McInnes et al.
patent: 3894994 (1975-07-01), Day et al.

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