Modified diphenylmethane diisocyanates useful in polyurethanes o

Details Modified diphenylmethane diisocyanates useful in polyurethanes o Modified diphenylmethane diisocyanates useful in polyurethanes o

1978-01-27

1980-09-09

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 99, 521103, 521105, 521106, 521107, 521108, 521113, 521117, 521123, 521124, 521125, 521127, 521129, 521137, 521902, 528 59, 528 67, 260453AB, C08G 1814, C08G 1878

Patent

active

042218772

ABSTRACT:
Covers a water-modified diisocyanate mixture obtained from water-treating a diphenylmethane diisocyanate to provide a diisocyanate mixture comprising 3-25 percent by weight of diphenylmethane biuret isocyanate and 75-97 percent diphenylmethane diisocyanate. Also covers the use of said water-modified diphenylmethane diisocyanate in preparing an improved polyurethane or polyisocyanurate polymer. Also covers said polymers.

REFERENCES:
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patent: 2865869 (1958-12-01), Hindersinn et al.
patent: 2950263 (1960-08-01), Abbotson et al.
patent: 3058925 (1962-10-01), Robitschek
patent: 3098047 (1963-07-01), Tapas et al.
patent: 3124605 (1964-03-01), Wagner
patent: 3214392 (1965-10-01), Worsley
patent: 3297597 (1967-01-01), Edwards et al.
patent: 3423344 (1969-01-01), Odinak et al.
patent: 3526652 (1970-09-01), Powers
patent: 3899454 (1975-08-01), Wagner et al.
patent: 3903127 (1975-09-01), Wagner et al.
patent: 3976622 (1976-08-01), Wagner et al.
D.A.S. 1,131,877, Bayer A/G, Jun. 20, 1962.

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