Polyurethane elastomers based on alcohol-modified diisocyanate

Details Polyurethane elastomers based on alcohol-modified diisocyanate Polyurethane elastomers based on alcohol-modified diisocyanate

1976-03-11

1978-03-21

Cockeram, H.S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AT, 260 775MA, C08G 1876

Patent

active

040803147

ABSTRACT:
The processing temperatures of thermoplastic polyurethane elastomers are reduced, and the extrudability and sensitivity to shear and moisture are improved, by employing as the diisocyanate, in the preparation of said elastomers, the product obtained by reacting 4,4'-methylenebis(phenyl isocyanate) with a monohydric aliphatic alcohol. Use of the latter also counteracts batch-to-batch variations in reactivity of 4,4'-methylenebis(phenyl isocyanate).

REFERENCES:
patent: 3294713 (1966-12-01), Hudson et al.
patent: 3463758 (1969-08-01), Stewart
patent: 3715381 (1973-02-01), Spaunburgh et al.
patent: 3769265 (1973-10-01), Groegler et al.
DOS, 2418075, Oct. 30, 1975, Bayer A/G.

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