Diisocyanates useful as a structural component in the preparatio

Details Diisocyanates useful as a structural component in the preparatio Diisocyanates useful as a structural component in the preparatio

1982-01-29

1983-07-19

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

252182, 260453AR, C08G 1876

Patent

active

043944957

ABSTRACT:
A mixture of homologues and isomers of hydrocarbons corresponding to the formula ##STR1## in which R represents a saturated, straight-chained aliphatic hydrocarbon radical having 8-15 carbon atoms, which mixture, at 1013 mbar, has a boiling range according to ASTM D 86 of 10.degree.-50.degree. C. within the temperature range of from 270.degree.-330.degree. C. is nitrated, hydrogenated and phosgenated. The product diisocyanate which is liquid, readily soluble, has a lower vapor pressure than TDI, does not tend to crystallize at room temperature and is virtually free of monoisocyanates is a mixture of homologues and isomers corresponding to the formula ##STR2## in which R is as defined above. These diisocyanates are particularly useful as starting materials in the production of polyurethane plastics.

REFERENCES:
patent: 2934571 (1960-04-01), Bonetti
patent: 2986576 (1961-05-01), Bonetti
patent: 3652424 (1972-03-01), Jackson et al.
ASTM D 86-78, 1978.
Polyurethanes-Chemistry & Technology-Part I, Saunders & Frisch, Interscience Publishers, 1962, pp. 17 et seq.

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