Process for producing shaped phenolic foams

Details Process for producing shaped phenolic foams Process for producing shaped phenolic foams

1995-10-04

1999-10-26

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

156 78, 156187, 1563071, 521918, C08J 936

Patent

active

059730188

ABSTRACT:
This invention is a partially or semi-cured foam used to form the pipe insulation. The semi-cured foam is very flexible and can be formed around a pipe for a long period of time after production. The semi-cured phenolic foam board of this invention is a closed cell foam. The semi-cured foam is further cured in the formed shape. Upon curing the foam retains the shape of the preform. The semi-cured product is very flexible, once fully cured, the insulation becomes rigid.

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patent: 5166184 (1992-11-01), Hashimote et al.
patent: 5182310 (1993-01-01), Skorpenske et al.
patent: 5234969 (1993-08-01), Clark et al.
patent: 5292464 (1994-03-01), Hanning et al.
patent: 5405665 (1995-04-01), Shukushima et al.
patent: 5407963 (1995-04-01), Willson et al.

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