Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Cellular products or processes of preparing a cellular...
Patent
1983-05-03
1984-11-06
Cockeram, Herbert S.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Cellular products or processes of preparing a cellular...
521 76, 521128, 521906, 521917, C08G 1814
Patent
active
044813082
ABSTRACT:
A method for the production of fire retardant foam such as flexible polyurethane foam. The method includes the mixing of urea with one or more of the foam producing reactants prior to combining or at the time of combining such reactants to produce the foam material. In one embodiment, the urea is pre-mixed with the polyol reactant in a slurry apparatus. In another embodiment, urea is injected into a mixing head at the time of mixing the foam producing reactants. The urea component may be employed in amounts of about 30 to 45% by weight of the total foam mass composition.
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Lesco Products-Data Sheet on Sulfur Coated Urea, (Elyria, Ohio), Oct. 1981.
Anti-Fire Foam, Inc.
Cockeram Herbert S.
Henry Patrick F.
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