Method of producing phenolic foam using pressure and foam produc

Details Method of producing phenolic foam using pressure and foam produc Method of producing phenolic foam using pressure and foam produc

1980-10-09

1983-12-27

Anderson, Philip E.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 455, 264 53, 264DIG2, 521117, B29D 2704

Patent

active

044231636

ABSTRACT:
The present invention is directed to a method of producing phenolic foams comprising introducing into a substantially closed volume a phenolic resole resin foamable composition and allowing the composition to foam in this volume wherein a pressure in excess of ambient atmospheric pressure is achieved within this volume. This pressure in excess of ambient atmospheric pressure generally is in excess of about 2 pounds per square inch, typically in excess of about 5 pounds per square inch, and preferably in excess of about 6 pounds per square inch, gauge pressure.
The present invention is also directed to foams produced by the method of the invention.

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