Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1979-12-17
1981-01-20
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 95, 521128, 521146, 521147, C08J 902
Patent
active
042463580
ABSTRACT:
Fire-resistant organic materials including foams, are made by heating at temperatures sufficient to cause polymerization and elimination of nitrogen and sulfur precursor aromatic polymers having sulfonamide linkages and aromatic compounds capable of forming said polymers, e.g. sulfamyl-type aminoaromatic compounds such as sulfanilamide, sulfaguanadine and the like. Preferred compounds are those providing para linkages in the sulfonamide polymer chain, those which are substantially free of oxidizing substituents, for example nitro groups, and those which are not fused-ring aromatic. Preferred foams are the high expansion foams, i.e. those having expansion ratios of at least about 3:1, more preferably at least about 8:1. The precursors of these fire-resistant organic materials can be incorporated into polymers such as polyvinylidene chloride, polyisocyanates, aminoplasts, and the like either physically by mixing or by chemical reaction to give improved fire-resistance. Also inorganic fillers such as titanium dioxide, silica, alumina and the like can be added to the polymers and/or the precursor to give compositions having improved fire resistance.
REFERENCES:
patent: 3748173 (1973-07-01), Roth
patent: 3759741 (1973-09-01), Roth
Foelak Morton
Monsanto Research Corporation
Stevens L. Bruce
LandOfFree
Fire-resistant material and process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fire-resistant material and process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire-resistant material and process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1767504