Patent ID: 6013689
Filing Date: 2000-01-11
Classification: C08G,C08J,C08L,Y10S

Abstract:
A foamable, phenolic resin composition adapted to form a closed-cell phenolic resin foam under substantially atmospheric pressure, said foamable, phenolic resin composition being formulated from a composition comprising: a resol resin;a blowing agent comprising at least two compounds have a boiling points which are separated by at least 10.degree. F. and each different boiling point is within the temperature range of from about 30 to about 70.degree. C.; anda bond strength enhancing agent which enhances the strength of a bond formed between phenol groups of said resol resin during formation of said closed-cell phenolic resin foam, wherein said bond strength enhancing agent is selected and present in an amount sufficient to provide a strength of said bond which is greater than a pressure provided by said blowing agent during blowing and curing of said closed-cell phenolic resin foam, and wherein said bond strength enhancing agent comprises a carbon containing compound having hydroxyl groups that are capable of reacting with methylol groups present on said resol.