초록 ▼

A flame-retardant polymer is created by forming a first resin typically by reacting resorcinol with furfural in a ratio of one mole of the former to less than a mole of the latter in the presence of an alkaline catalyst. A resole is then formed by reacting typically phenol with formaldehyde in a rat

A flame-retardant polymer is created by forming a first resin typically by reacting resorcinol with furfural in a ratio of one mole of the former to less than a mole of the latter in the presence of an alkaline catalyst. A resole is then formed by reacting typically phenol with formaldehyde in a ratio of one mole of phenol to more than a mole of the aldehyde in the presence of an alkaline catalyst. The first resin and resole are mixed together with a powered oxyborate compound such as zinc borate and allowed to polymerize to form the polymer.

대표청구항 ▼

A flame retardant polymeric material comprising a heat-cured mixture of (1) a liquid condensation reaction product of a mixture of a first aldehyde and a polyhydric phenol in a molar ratio of one mole of said polyhydric phenol with less than one mole of said first aldehyde and reacted in the presenc

A flame retardant polymeric material comprising a heat-cured mixture of (1) a liquid condensation reaction product of a mixture of a first aldehyde and a polyhydric phenol in a molar ratio of one mole of said polyhydric phenol with less than one mole of said first aldehyde and reacted in the presence of an alkaline catalyst; (2) a liquid condensation reaction product of a mixture of a second aldehyde and a second phenol in a ratio of one mole of phenol with more than a mole of said second aldehyde and reacted in the presence of an alkaline catalyst; and (3) a comminuted oxyborate. A flame retardant polymeric material as defined in claim 11 and comprising one or more layers of reinforcing scrim embedded in said heat-cured mixture.