Preparation of polyaminoamide resin in the absence of water

Details Preparation of polyaminoamide resin in the absence of water Preparation of polyaminoamide resin in the absence of water

1978-09-01

1980-01-08

Anderson, Harold D.

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

Synthetic resins

From carboxylic acid or derivative thereof

528342, 528345, 528347, 528350, C08G 6928

Patent

active

041828445

ABSTRACT:
An energy-conserving method for the manufacture of polyaminoamides is described which involves the reaction of a polycarboxylate ester with a mono and/or polyalkylene polyamine in the presence of 0 to about 5% by weight water by heating approximately stoichiometric proportions of the two reactants to the temperature at which the amidification reaction becomes self-sustaining, then utilizing the exothermic heat of reaction to sustain the reaction at a desired temperature. During the reaction, the heat of reaction is used to vaporize an alcohol reaction product and remove the alcohol from the reaction vessel and from further contact with the reaction vessel contents. The following equation illustrates the reaction in the substantial absence of water (0 to about 5% by weight) using a methyl ester and an amine: ##STR1##

REFERENCES:
patent: 2461495 (1949-02-01), Floyd et al.
patent: 2570180 (1951-10-01), Allewelt
patent: 2632748 (1953-03-01), Caldwell
patent: 2671071 (1954-03-01), Laakso et al.
patent: 3139417 (1964-06-01), Duxbury
patent: 3194794 (1965-07-01), Caldwell et al.
patent: 3329653 (1967-07-01), Beavers et al.
patent: 3379695 (1968-04-01), Wolfes et al.
patent: 3459714 (1969-08-01), Wolfes et al.
patent: 3634362 (1972-01-01), Oldham
patent: 3887510 (1975-06-01), Chan et al.

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