Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-05-30
1978-05-30
Michl, Paul R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260889, C08L 2322
Patent
active
040922901
ABSTRACT:
A sealant suitable for use with multiple glazed window units is disclosed. The sealant comes in the form of two relatively low viscosity components, each of which has an unlimited storage life. When it is desired to apply the sealant, the components are fed to an extruder and blended together to form an initially uncured cold flowable mastic material of relatively low viscosity. Because each of the two components of the sealant composition is of low viscosity and the initially uncured composite of the two components blended together is also of low viscosity, the sealant can be extruded at relatively low temperatures, thus preventing premature rapid curing and insuring that the sealant composition will have a low viscosity and be cold-flowable immediately after extrusion. The sealant is then cured in situ at ambient temperature over a period of several weeks to form a firm, tacky, resilient seal.
REFERENCES:
patent: 2974377 (1961-03-01), Kunkle
patent: 3076777 (1963-02-01), Zeolla
patent: 3290165 (1966-12-01), Iannicelli
patent: 3500603 (1970-03-01), Strack
patent: 3654005 (1972-04-01), Higgins
Michl Paul R.
Pollock E. Kears
PPG Industries Inc.
Seidel Donna L.
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