Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1994-12-07
1995-07-25
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 91, 521 94, 521110, 521128, 521158, C08J 914, C08G 1884
Patent
active
054362784
ABSTRACT:
The present invention provides:
a melamine resin foam obtained by foaming a resin composition comprising a melamine/formaldehyde condensate, a blowing agent and an isocyanate,
a process for producing the above melamine resin foam, which comprises foaming a resin composition comprising a melamine/formaldehyde condensate, a blowing agent and an isocyanate, and
a melamine/formaldehyde condensate used in the production of the above melamine resin foam, which is obtained by reacting melamine and formaldehyde in the presence of a silane coupling agent.
The melamine resin foam of the present invention is free from the problems of the prior art, has solved the problem of fragility without impairing the good flame retardancy and low thermal conductivity inherently possessed by melamine resin foams, and causes no danger during the production.
REFERENCES:
patent: 4176217 (1979-11-01), Golser et al.
patent: 4334971 (1982-06-01), Mahnke et al.
patent: 4640935 (1987-02-01), Fisk et al.
patent: 5118722 (1992-06-01), Wollmann et al.
Hasegawa Shun
Imashiro Yasuo
Okutani Tatsuya
Foelak Morton
Kubovcik Ronald J.
Nisshinbo Industries Inc.
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