Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1990-07-20
1992-01-14
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
C08G 1814
Patent
active
050811622
ABSTRACT:
A process for producing a foamed polymer, particularly a polyurea foam, comprises reacting an isocyanate compound and at least one active hydrogen-containing compound in the presence of a heterogeneous blowing agent. The heterogeneous blowing agent is a permanent gas and is used at a temperature and a pressure thereby rendering it in the form of a liquid, solid or deep chilled gas. The exothermicity of the reaction is substantially compensated by the energy absorbing capacity of the heterogeneous blowing agent.
REFERENCES:
patent: 2807595 (1957-09-01), Brown
patent: 2984631 (1961-05-01), Talalay et al.
patent: 3065501 (1962-11-01), Gasmire
patent: 3110552 (1963-11-01), Voelker
patent: 3281379 (1966-10-01), Fontaine et al.
patent: 3288732 (1966-11-01), Chapman et al.
patent: 3429837 (1969-02-01), Langrish et al.
patent: 3468987 (1969-09-01), Willy
patent: 3538203 (1970-11-01), Overcashier et al.
patent: 3590012 (1971-06-01), Hauptmann et al.
patent: 3592628 (1971-07-01), Wuenscher
patent: 3745203 (1973-07-01), Harper
patent: 3787542 (1974-01-01), Gallagher et al.
patent: 3808300 (1974-04-01), Miyamoto et al.
patent: 3823099 (1974-07-01), Doyle
patent: 3904557 (1975-09-01), Leverette et al.
patent: 4263408 (1981-04-01), Meyborg et al.
patent: 4289856 (1981-09-01), Yamamoto et al.
patent: 4297442 (1981-10-01), Blahak
patent: 4313873 (1982-02-01), Lim
patent: 4343912 (1982-08-01), Lim
patent: 4384048 (1983-05-01), Bathgate
patent: 4399087 (1983-08-01), Akiyama et al.
patent: 4424287 (1984-01-01), Johnson et al.
patent: 4451587 (1984-05-01), Keshi et al.
patent: 4757096 (1988-07-01), Berthevas et al.
Duley J. A.
Farkas Paul V.
Welsh Maurice J.
Woodbridge Foam Corporation
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