Closed cell phenolic foam
AssigneeThe Celotex Corporation
InventorsJohn H. Beale, Ernest K. Moss
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Abstract
A process for producing a closed cell phenolic-resin foam material comprising a phenolic-resin polymer and surfactant which is branched, non-ionic, with a hydroxyl value less than 50 achieved by capping excess hydroxyl groups; the material, and a structural laminate employing the material. The material has a thermal conductivity which is low initially and remains low for a long period of time.
Claims22
A laminated structural panel having at least one facing sheet and having adhered to it a closed cell foam material comprising the reaction product of:
- A. phenolic-resin,
- B. a blowing agent,
- C. a surfactant characterized in that it is branched, non-ionic, has a hydroxyl value less than 50 and its hydroxyl groups which would otherwise give the surfactant a higher hydroxyl value are capped.
A laminated structural panel having at least one facing sheet and having adhered to it a closed cell foam material comprising the reaction product of:
- A. phenolic-resin
- B. a blowing agent,
- a surfactant which is a surfactant of Formula VI of the attached drawings wherein:
- (a) R.sup.5 is an organic radical having 3 to 100 reactive groups,
- (b) the R.sup.6 's are independently selected from the group consisting of hydrogen and methyl,
- (c) the R.sup.7 's are independently selected from the group consisting of alkyl, aryl, aralkyl, and alkaryl,
- (d) X is selected from the group consisting of ##STR11## (e) m is an integer from 1 to 100 inclusive, (f) n is an integer from 3 to 100 inclusive,
- (g) R.sup.8 is independently selected from the group consisting of hydrogen, a copolymer of dialkylmaleate and N-vinyl pyrrolidone and a copolymer of dialkylmaleate and N-vinyl caprolactam wherein the alkyl of the maleate has 1 to 5 carbon atoms.
Dependencies are inferred from the claim text.