Semi-flexible or flexible phenolic foam composition

Details Semi-flexible or flexible phenolic foam composition Semi-flexible or flexible phenolic foam composition

1989-07-14

1991-10-15

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 51, 264321, 521120, 521181, 521918, C08J 914

Patent

active

050575465

ABSTRACT:
A semi-flexible or flexible phenolic foam composition having a substantially open cellular structure. It comprises the reaction product of a mixture of a phenol-aldehyde resin, a surfactant, a blowing agent; optionally a wetting agent and a catalyst. Also within the scope of the present invention is a method for producing a semi-flexible or flexible phenolic foam composition having a substantially opened cellular structure. This method comprises mixing a phenol-aldehyde resin with a surfactant, a blowing agent and optionally a cell opening and wetting agent; curing the mixture by reacting it with an acid catalyst; compressing the cured or semi-cured product below its original thickness and releasing the pressure, thereby obtaining the desired semi-flexible or flexible phenolic foam composition. The semi-flexible or flexible foam thus obtained possesses excellent insulation and flame retardant properties.

REFERENCES:
patent: 4225679 (1980-09-01), Pilato
patent: 4423163 (1983-12-01), Doerge

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