Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-07-28
1979-11-27
Pertilla, Theodore E.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
428524, 521181, 528140, 528147, 528165, C08L 6108, C08L 6110
Patent
active
041761065
ABSTRACT:
The present invention provides particular phenol/formaldehyde resoles which are especially useful as foamable resins, and further provides cellular phenolic products having physical properties which are especially attractive for end-use application as construction foam. The resoles are characterized by a particular relationship between their viscosity and water content, expressed as the area bounded by certain points on a plot of resole viscosity on a logarithmic scale, as a function of water content of the resole, the particular area depending upon the mole ratio of formaldehyde-to-phenol at which the resole has been condensed. It has been found that phenol-formaldehyde resoles having the defined viscosity/water relationship are capable of providing phenolic foam having acceptable foam processability, a foam density from about 1.90 to about 3.70 pounds per cubic foot and, within this foam density range, a good balance of friability resistance and compressive strength, that is, a friability of less than 35 percent weight loss and a compressive strength of at least 20 pounds per square inch. Preferred resoles within the invention are foamable to phenolic foam having a reduced tendency to punk as well as the aforementioned desirable combination of foam processability and mechanical properties.
REFERENCES:
patent: 2744875 (1956-05-01), Thomas et al.
patent: 3271331 (1966-09-01), Ender
patent: 3298973 (1967-01-01), Quarles
patent: 3673130 (1972-06-01), Papa et al.
patent: 3876620 (1975-04-01), Moss
patent: 3953645 (1976-04-01), Moss
patent: 3968300 (1976-07-01), Moss et al.
patent: 4001148 (1977-01-01), Simic et al.
patent: 4033909 (1977-07-01), Papa
patent: 4033910 (1977-07-01), Papa
patent: 4070313 (1978-01-01), Papa
Atkins Kenneth E.
Reid Wallace G.
Saini Rakesh
Klosty Marylin
Pertilla Theodore E.
Union Carbide Corporation
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