Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1977-03-02
1978-04-25
Foelak, Morton
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 25EP, 260 25D, 260 28P, 260 47EQ, 260 7841, C08J 902
Patent
active
040861953
ABSTRACT:
Bitumen filled polyester foams are provided through a process which comprises forming a solution of a bitumen having a softening point of at least about 80.degree. C. and a cyclic diacid anhydride at a temperature above the softening point of a bitumen, the bitumen solution is then mixed with a monoterminal epoxide and a polyterminal epoxide in the presence of a blowing agent resulting in the initiation of an exothermic reaction. The process for producing bitumen filled polyester foams through the in situ polymerization of polyesters in a solution of bitumen and the foams produced by the process constitute the invention.
REFERENCES:
patent: 2956034 (1960-10-01), Simpson
patent: 3284390 (1966-11-01), Scheibli et al.
Foerst Paul W.
Hill James C.
Hughes Lawrence J.
Knox Walter R.
Foelak Morton
Logomasini J. C.
Monsanto Company
Passley P. L.
Tarter S. M.
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