Single-stage process for the production of polyamines and polyam

Details Single-stage process for the production of polyamines and polyam Single-stage process for the production of polyamines and polyam

1983-06-21

1986-01-21

Kight, John

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

564393, 564414, 525127, 525131, 525452, 528 53, 528 54, 528 57, 528 61, 528 64, C09K 300, C08G 1808, C08G 1820, C08G 1810

Patent

active

045656452

ABSTRACT:
Polyamines containing from 0.19 to 20.3 wt % primary amino groups are produced by hydrolyzing in a single stage an isocyanate with an excess of water, a relatively weak basic compound and a water-miscible polar solvent at a temperature from 50.degree. to 165.degree. C. The hydrolysis is conducted in a manner such that the reactants are substantially homogeneous during the reaction. The isocyanate should have an NCO-content of from 0.5 to 40 wt %. The weakly basic compound may be a carbonate or hydrogen carbonate of an alkali metal or an alkali or alkaline earth salt of a monocarboxylic or polycarboxylic acid or mixtures of such materials. The polyamines produced by this process are particularly useful in the production of polyurethanes.

REFERENCES:
patent: 2888439 (1959-05-01), Simons
patent: 3044989 (1962-07-01), Shivers, Jr.
patent: 3184502 (1965-05-01), Muller et al.
patent: 3385829 (1968-05-01), Heydkamp et al.
patent: 3592854 (1971-07-01), Potts et al.
patent: 3625871 (1971-12-01), Traubel et al.
patent: 3808250 (1974-04-01), Balahak et al.
patent: 3865791 (1975-02-01), Brinkmann et al.
patent: 4129741 (1978-12-01), Schmidt et al.
patent: 4153801 (1979-05-01), Schmidt et al.
patent: 4163831 (1979-08-01), Gessell
patent: 4169206 (1979-09-01), Mazanek et al.
patent: 4172050 (1979-10-01), Gessell
patent: 4180644 (1979-12-01), Marquis et al.
patent: 4198348 (1980-04-01), Bertini et al.
patent: 4224417 (1980-09-01), Hajek et al.
patent: 4260557 (1981-04-01), Mazanek et al.
patent: 4260729 (1981-04-01), Schmidt et al.
patent: 4386218 (1983-05-01), Rasshofer et al.
H. John, J. Prakt. Chemie, 130, 314 et seq. 332 et seq. 1931.

Affiliated with

Also associated with

Rating

Single-stage process for the production of polyamines and polyam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Single-stage process for the production of polyamines and polyam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single-stage process for the production of polyamines and polyam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2297406