Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl

Details Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl

1981-03-18

1982-03-09

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453P, C07C119048

Patent

active

043188613

ABSTRACT:
Liquid reaction product mixtures of diphenylmethane diisocyanates and polymethylene polyphenyl isocyanates resulting from the thermal decomposition of the corresponding carbamates produced by the acid condensation of an N-aryl carbamic acid ester, such as ethylphenylcarbamate, with formaldehyde are storage stabilized against an increase in viscosity and decrease in free NCO content, by incorporating therein an effective amount of a compound having the formula ##STR1## wherein R is hydrogen or an alkyl group having up to 4 carbon atoms, x plus y is equal to 3 and z is an integer of from 0 to 3.

REFERENCES:
patent: 3660456 (1972-05-01), Naito et al.
patent: 3880784 (1975-04-01), Wagner et al.
patent: 3962302 (1976-06-01), Rosenthal et al.
patent: 4162362 (1979-07-01), Shawl

Affiliated with

Also associated with

Rating

Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilized diphenylmethane diisocyanate-polymethylene polyphenyl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1840188