| 摘要 |
PCT No. PCT/GB87/00650 Sec. 371 Date Mar. 13, 1989 Sec. 102(e) Date Mar. 13, 1989 PCT Filed Sep. 17, 1987 PCT Pub. No. WO88/02019 PCT Pub. Date Mar. 24, 1988.An intumescent material comprises expandible graphite in a polymeric binder. The binder may be a flexible or elastomeric binder or a formaldehyde resin. A suitable flexible binder is a polymer selected from vinyl acetate polymers, styrene polymers, vinyl chloride polymers, acrylic polymers, vinyl butyral polymers, melamine/urea/phenol formaldehyde resins, polyesters and phenolic resins. A suitable elastomeric binder is a rubber. A suitable formaldehyde resin is melamine formaldehyde resin, urea formaldehyde resin, phenol formaldehyde resin or resorcinol formaldehyde resin. |
