Dispersing solid polyurethane prepolymers into water

Details Dispersing solid polyurethane prepolymers into water Dispersing solid polyurethane prepolymers into water

1976-09-27

1978-06-13

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AM, 260 775AQ, 260 775A, 260 775Q, 428425, C08J 304, C08G 1812, C08J 324, C08G 1882

Patent

active

040948420

ABSTRACT:
This invention relates to a novel process for the production of polyurethane via an intermediate stage of aqueous dispersions of oligomeric polyurethane prepolymers having ionic and/or non-ionic hydrophilic groups which ensure their dispersibility in water, followed by conversion of these water-dispersible oligomers into cross-linked high molecular weight sheets.

REFERENCES:
patent: 2948691 (1960-08-01), Windemuth et al.
patent: 3250745 (1966-05-01), Davis et al.
patent: 3384606 (1968-05-01), Dieterich et al.
patent: 3756992 (1973-09-01), Dieterich
patent: 3905929 (1975-09-01), Noll
patent: 3923713 (1975-12-01), Hermann
patent: 3935146 (1976-01-01), Noll et al.
patent: 3988278 (1976-10-01), Bartizal
Dieterich et al. Advances in Urethane Science & Technology vol. 4, Technomic Publishing Co. Westport (Conn., USA) pp. 112-131.
DOS 1,595,687-Bayer A/G, Sep. 4, 1969.

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