Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1989-05-22
1990-06-05
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 98, 521908, C08J 914
Patent
active
049314823
ABSTRACT:
This invention relates to an improved method of preparing closed cell foams using 1,1,1,4,4,4-hexafluorobutane as a blowing agent and insulating gas in the production of such foams, including isocyanate-based foams such as polyurethane foams and polyisocyanurate foams.
REFERENCES:
patent: 3567788 (1971-03-01), Carr et al.
Preparation, Properties, and Technology of Fluorine and Organic Fluoro Compounds, C. Slesser and S. R. Schram, (New York, Toronto London: McGraw-Hill Book Company, Inc., 1951), p. 817.
Bielefeldt Dietmar
Lamberts Wilhelm
Marhold Albrecht
Negele Michael
Sommerfeld Klaus-Dieter
Bayer Aktiengesellschaft
Foelak Morton
Gil Joseph C.
Henderson Richard E. L.
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