Intumescent composition
AssigneeCities Service Company
InventorShirley H. Roth
Life of this patent
Estimating the term…
Abstract
A water-insoluble amine-aldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula: ##SPC1## Wherein Q is the aldehyde residue and R is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, halo, nitro, acetamido, or sulfonamido is mixed with about 10-100% by weight of 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane as a synergist to increase the foam volume obtainable from the intumescent agent. The compositions comprising the intumescent agent and synergist may be applied to substrates by conventional techniques.
Claims9
An intumescent composition comprising (A) a water-insoluble amine-aldehyde copolymer intumescent agent having a number average molecular weight of about 350-2000 and consisting essentially of repeating units corresponding to the formula:
- ##SPC4##
- wherein Q is the aldehyde residue and R is hydrogen, alkyl, haloalkyl, alkoxy, haloalkoxy, halo, nitro, acetamido, or sulfonamido and (B) about 10-100%, based on the weight of the intumescent agent, of 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane as a synergist.
Dependencies are inferred from the claim text.