Process for preparation of foams by condensation reactions

Details Process for preparation of foams by condensation reactions Process for preparation of foams by condensation reactions

1979-08-14

1981-06-16

Anderson, Philip

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 26, 264 53, 264236, 521103, 521186, B29D 2704

Patent

active

042738873

ABSTRACT:
An improved process for the production of thermoset foams having a predetermined shape by subjecting a reactive amine to a condensation reaction in an enclosed mould cavity, wherein the reaction is carried out under conditions whereby by-product water found during the reaction is substantially free to move out into a space adjacent to and in communication with said foam, and controlling the temperature and care of said foam by regulation of the web bulb temperature of the gaseous mass inside said space. Foam products made in accordance with the process of the invention, e.g. urea-formaldehyde furfuryl alcohol-based insulating foams, are also claimed.

REFERENCES:
patent: 3761209 (1973-09-01), Hanton
patent: 3821337 (1974-06-01), Bunclark et al.
patent: 3919127 (1975-11-01), Larsen et al.
patent: 4016111 (1977-04-01), Wolff et al.
patent: 4026980 (1977-05-01), Hubbard
patent: 4051211 (1977-09-01), Beser et al.

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