Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-09-26
1977-07-05
Foelak, Morton
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 25FP, 260 293, 260 53R, 260 54, 260 55, 260 57C, C08J 914
Patent
active
040339106
ABSTRACT:
This invention relates to the use of methyl formate as an adjuvant in the formation of phenolic foam. The addition of methyl formate to phenol-aldehyde resoles causes a substantial reduction in resole viscosity and thus allows for the processing of resoles which are otherwise too viscous to be foamed. A further advantage of methyl formate as an adjuvant in the formation of phenolic foam is that it also functions as a blowing agent. In its use as a blowing agent, methyl formate is employed in combination with 1,1,2-trichloro-1,2,2-trifluoroethane. Depending upon the nature of the phenolic foaming resin, the use of methyl formate in combination with 1,1,2-trichloro-1,2,2-trifluoroethane as the source of blowing action further provides the advantageous result of allowing for the formation of phenolic foam of reduced friability.
REFERENCES:
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patent: 2910446 (1959-10-01), Roth
patent: 2911381 (1959-11-01), Roth
patent: 2911382 (1959-11-01), Barkhuff, Jr. et al.
patent: 3389094 (1968-06-01), D'Alessandro
patent: 3879315 (1975-04-01), Watkinson
patent: 3914191 (1975-10-01), Scott
Foelak Morton
Klosty Marylin
Union Carbide Corporation
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