Substantially closed cell shaped hard phenol foam and method for

Details Substantially closed cell shaped hard phenol foam and method for Substantially closed cell shaped hard phenol foam and method for

1989-04-14

1990-04-24

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521181, C08J 914

Patent

active

049201549

ABSTRACT:
A phenol foam and a method for preparing substantially closed cell shaped resins on the basis of the condensation product between, on the one hand an either or not substituted phenol and/or phenol derivative and, on the other hand an aldehyde by using a blowing means for forming a hard phenol foam, whereby a physical blowing means comprising chlorine-propane is used.

REFERENCES:
patent: 3300419 (1967-01-01), Erickson
patent: 3740358 (1973-06-01), Christie et al.
patent: 3741920 (1973-06-01), Weissenfels
patent: 4207400 (1980-06-01), Dahms
patent: 4525492 (1985-06-01), Rastall et al.

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