Non-burning, non-smoking thermoset foam composition
AssigneeThermocell Development, Ltd.
InventorStuart B. Smith
Life of this patent
Estimating the term…
Abstract
A foam composition obtained by first forming a pre-blend reaction product by reacting about 200 to about 250 parts by weight melamine with about 20 to about 100 parts by weight phenolic resin having benzylic ether linkages in the presence of a catalyst and further reacting said pre-blend reaction product with about 20 to about 100 parts by weight isocyanate and about 20 parts by weight polyethylene glycol. Such foams are essentially non-burning under fire conditions and exhibit excellent compression strength characteristics while being virtually non-firable.
Claims10
A foam composition obtained by (a) first forming a pre-blend reaction product by reacting about 200 to about 250 parts by weight melamine with about 20 to about 100 parts by weight phenolic resin having benzylic ether linkages in the presence of a catalyst and (b) further reacting said pre-blend reaction product with about 20 to about 100 parts by weight isocyanate and about 20 parts by weight polyethylene glycol in the presence of a blowing agent and surfactant.
A foam composition obtained by first forming a pre-blend reaction product by (a) reacting about 2 to about 200 parts by weight melamine and about 20 to 100 parts by weight phenolic resin having benzylic ether linkages in the presence of a catalyst and (b) further reacting said pre-blend with about 20 to 100 parts by weight isocyanate and a friability modifier, said modifier being used in an amount of about 5 to about 35 parts by weight of said resin in the presence of a blowing agent and surfactant.
A foam composition obtained by reacting a pre-blend having about 150 to about 250 parts by weight melamine, about 100 parts by weight isocyanate, a blowing agent with about 20 parts by weight polyethylene glycol and about 20 to about 100 parts by weight phenolic resin having benzylic ether linkages in the presence of a trimerization catalyst and surfactant.
Dependencies are inferred from the claim text.